2016 CHEVROLET COLORADO Engine Problems

Vacuum pump busted as shown in photos. Once that busted it sent metal shrapnel into the engine which broke a piece of the cam shaft into bits. There were metal fragments that had to be meticulously cleaned out of my engine block. The loss of vacuum seal caused me to lose brakes while driving in stop and go traffic on the highway.

COMPONENT: The piston in cylinder #1 cracked and created conditions for the fuel injector to bore a hole through it. SAFETY: This led to sudden loss of engine power and violent shaking of the vehicle at highway speeds. CONFIRMATION: Multiple reports of the exact same incident can be confirmed and researched at ColoradoFans.com, specifically on these threads https://www.coloradofans.com/threads/looks-like-my-number-finally-came-up-engine-failure.444376 https://www.coloradofans.com/threads/poll-how-many-blown-up-2-8-diesels-please-indicate-on-poll.396705/ https://www.coloradofans.com/threads/documented-2-8l-duramax-lwn-engine-catastrophic-failures-thread.427244 INSPECTION: Confirmed the crack and the hole in piston #1 with borescope. WARNINGS: Prior to catastrophic failure, there was an ongoing intermittent issue chasing down DTC P11CC - NOx1 Performance Low. Not sure if that was a harbinger or completely unrelated.

The contact owns a 2016 Chevrolet Colorado. The contact stated that while driving at an undisclosed speed and making a turn, the vehicle stalled but restarted. The contact continued driving, but the failure recurred. There were no warning lights illuminated. The contact stated that the failure should be covered under NHTSA Campaign Number: 21V213000 (Steering). The contact pulled over to the side of the roadway. The vehicle was taken to the local dealer, where it was diagnosed that the steering gear torque sensor cover assembly needed to be replaced; Part Number: 23232310. The vehicle was repaired. The manufacturer was not contacted. The failure mileage was approximately 122,998.

Mileage: 122,998

-What component or system failed or malfunctioned, and is it available for inspection upon request? 2016 Chevrolet Colorado VIN: [XXX] Engine: 2.5L I4 (camshaft-driven brake system assist vacuum pump failure). GM Technical Service Bulletin 21-NA-268 (Nov 2021) confirms that if vacuum pump drive lugs are broken, replacement of both the vacuum pump and the exhaust camshaft is required which was the case. Parts kept by repair facility that performed service. Autonation Chevrolet South Clearwater FL 33764. -How was your safety or the safety of others put at risk? May, 2025 the vehicle experienced a sudden loss of braking (hard/stiff brake pedal). This is a safety-critical failure. -Has the problem been reproduced or confirmed by a dealer or independent service center?Yes by shop stated above. Diagnosis showed a seized engine brake system vacuum pump (driven by the exhaust camshaft) that had sheared drive lugs and produced metal debris which damaged the exhaust camshaft and associated components. The repair required replacement of the vacuum pump and the exhaust camshaft; my total repair cost was over $4,000. The camshaft was not readily available and I required a rental car for over 30 days while waiting for parts. -Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? System and parts inspected by shop above. GM Special Coverage N182202780 (Apr 2019) addresses vacuum-pump related decreased brake assist for certain 2014–2017 GM trucks/SUVs, but Colorado is not listed in that bulletin’s model list. -Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Check Engine came on at time of brake loss (Brake Vacuum Pump Failure). Immediate system failure. I request NHTSA send me a copy of any investigation number or record created for this complaint, and I request guidance on whether I may be eligible for reimbursement under any GM program. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATIO

FPCM code P069E. Engine stalls when slowing down. Local dealer says to check wires around water pump area if rubbing and unsecured.

07-01-23 Vehicle died out, wouldn't start, got jumped, still wouldn't start. No indicator lights or warnings. Towed vehicle to the dealership, where it was for 11 1/2 months with the determination it was the ECM and Harness. Which it took that long to get. The vehicle was given back 06-14-24, even though it was in running condition, it was discovered parts were missing. Dealership put on order, received by end of July and installed. November 13, 2024, vehicle died out while driving on the freeway. Dashboard lit up everything, had to get the vehicle towed back to dealership. I have the Onstar diagnostics indicating the same components as the original reason the vehicle was held for an approximate year. Dealership now has vehicle and we have to wait for them to do a diagnostic.

06/13/2023: Odometer: 86881 Transmission-2nd Shift: Flare, 3rd Shift: rough shift flare, 4th Shift: shutter. Excessive metal particles in the fluid. No transmission codes or engine light detected. Result was a new rebuilt transmission. 11/01/23: Odometer: 90239 Engine Code: P00b7 coolant flow restriction, stuck thermostat. Result was to replace thermostat and flush coolant system. 12/06/23: Odometer: 91701 No codes detected. Fluids noticed on pavement occasionally. Valve cover gasket, vacuum pump gasket were failing. Result was to replace all parts. 02/25/24: Odometer: 92885 Code-engine overheating, idle engine. Critical 260 upon cold start. Failing temperature sensor. Result was to replace front and rear temperature sensor. Driver seat has begun to unravel and separate at the stich line on the side closest to the door. No repairs have been made. Issue began years ago. Approximately 2018. The area was small and has slowly widened. Approximately 6 inches currently even with avoidance of stretching and being cautious of that area. I do have documentation of this events and repairs if they are needed.

I have asthma and it is controlled by medication when needed. Recently I have had a lot more incidents of breathing difficulty since I purchased my vehicle. It was during one of these episodes that my wife noticed an odor associated with antifreeze. However, there is no moisture in the vehicle and no visible leaks or puddles on the ground. I have detected the same odor when standing near the back of the truck near the tailpipe. Also, I have had to refill the radiator with exactly five gallons of Antifreeze in less than 3000 miles of driving. It was my wife who alerted me to the odor being inside the vehicle and only during times when the heater was running. Since that time I have driven the vehicle only when I can safely leave the heater off, because I cannot be sure it is safe. If I need the heater to defrost, I leave the vehicle. Also, I noticed that when the engine coolant is low, the engine never seems to overheat, and the heater no longer blows hot air. Is this an issue involving only my vehicles and what other health risks are there? The most I have had to add to restore heat is a gallon of coolant.

The contact owns a 2016 Chevrolet Colorado. The contact stated while driving 45 MPH, upon reaching the top of an incline, the vehicle began to shudder before losing motive power. The contact pushed the vehicle to the shoulder of the roadway, where the vehicle failed to restart. The check warning light was illuminated. The vehicle was towed to the dealer, who diagnosed failures with the purge valve and mass air flow sensor. The vehicle was repaired, but the failure reoccurred. The dealer was made aware of the failure and informed the contact that there was a possible failure with the vent valve canister. After a visual inspection of the engine compartment, the contact discovered water within the vent valve canister. After investigating the failure, the contact related it to Emission Recall: N202313200. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 96,000.

Mileage: 96,000

The contact owns a 2016 Chevrolet Colorado. The contact stated while driving approximately 10 MPH and slowing down for traffic or a traffic signal, the vehicle would start to vibrate excessively. The contact stated that the check engine warning light was illuminated, and the vehicle almost stalled. The contact had taken the vehicle to an independent mechanic where it was diagnosed and determined that the canister purge valve needed to be replaced. The vehicle was repaired. The contact stated that the vehicle experienced the failure two more times and was taken to the same mechanic. The contact stated that he had purchased the purge valve from an auto parts store and later purchased the valve from the manufacturer. The contact stated that the vehicle was repaired; however, the contact believed that the valves sold were defective. The manufacturer had not been informed of the failure. The failure mileage was approximately 130,000.

Mileage: 130,000

The contact owns a 2016 Chevrolet Colorado. The contact stated that while driving at various speeds the vehicle would have a sudden loss of power steering. The failure occurred intermittently. The contact believed the check engine light, traction control, abs, and stability track warning lights and or messages become illuminated. The vehicle goes into limp mode causing the contact to have to turn the vehicle on and off several times. The contact stated that while their son was driving approximately 5 mph, on icy road conditions, the power steering suddenly failed to cause the driver to lose control of their vehicle. The vehicle ended up veering off the side of the road into a ditch about 6 feet deep. The air bags did not deploy. The driver had no injuries and no medical attention was needed. A police report was not filed. The vehicle had to be lifted out of the ditch and then towed. There was no damage. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage 140,000.

Mileage: 140,000

The contact owns a 2016 Chevrolet Colorado. The contact stated that on several occasions, the engine, traction, and stabilitrak warning lights illuminated then the vehicle went into Limp Mode. The vehicle was taken to AutoZone where a diagnostic test indicated that the powertrain system and cylinder #1 had failed. The contact stated while driving downhill, the RPM increased however, the vehicle failed to respond. Additionally, the contact stated that the ABS warning light illuminated and the vehicle went into Limp Mode. The vehicle was towed to the dealer where it was diagnosed that the fuel pipe, fuel rail and fuel injector needed to be replaced. The vehicle was repaired however, the failure recurred. The vehicle was then taken to a different dealer where it was diagnosed that cylinder #1 and the power steering failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that she would receive a loaner vehicle however, the manufacturer was contacted a second time where the contact was denied a loaner vehicle due to a warranty issue. The failure mileage was 138,000.

Mileage: 138,000

While making a left turn through an intersection, the vehicle's engine shut down without any warning. The electronics were still powered. My safety was put at risk, as other drivers were also going through the intersection. If this issue occurs again at another random time and I lose power while driving, this could easily result in an accident. I have not had it inspected by a mechanic, since it just happened, but have read online that others with Chevy Colorados have had this issue and could not find the cause.

One morning I started my truck to go to work and the engine started ticking when I arrived at work the engine was still ticking . Being a European Automotive Technician for 34 years I knew this was bad . I performed an extensive diagnosis of the engine and found metal particles in the oil and filter at that point I knew that something in the engine had failed . I removed the engine and removed the oil pan for further inspection and discovered that the # 2 cylinder piston was broken below the wrist pin.

accelerating and shuttering and jerking when you are trying to accelerating afraid to accelerate to go aroud another vehicle or to pull my tariler

my truck has a issue when you are going down a hill it shifts into a lower gear. This is an automatic transmission. This can cause my truck to slide and spin in bad weather. I have seen people comment about this issue on some Colorado forums. It has done this many times and at times I have pulled over and placed it in park

The contact owns a 2016 Chevrolet Colorado. The contact stated that while driving at highway speeds, after switching from the automatic drive mode to manual drive mode, the driver was able to manually switch to 1st gear which caused the speed to abruptly decrease. The contact indicated that the owner’s manual stated that the vehicle would not allow itself to shift into a lower gear at an unsafe speed. The cause of the failure was not determined. The vehicle was taken to the local dealer and the mechanic duplicated the failure, but no service was performed. The manufacturer was not notified of the failure. The failure mileage was 36,000.

Mileage: 36,000

2016-2020 Chevy Colorado and GMC Canyon diesel models have faulty DPF and DEF systems that fail within <20-60K miles. They do not warranty it as powertrain, and it is a common problem. SAFETY ISSUE: While out of state, the vehicle regenerating exhaust cleaning cycle can not properly clean the system. It then goes into limp mode. 2 dealers have tried to fix it, with no avail. Limp mode limits speed from 65mph with no power on hills, to 55, then 4mph. See this thread for how many people are experiencing problems: https://www.coloradodiesel.org/threads/dpf-regeneration.1137/page-2 Thank you, Andrew R

DURING ANY TYPE OF MOISTURE IE (FOG, RAIN) VEHICLE GOES INTO REDUCED ENGINE POWER MODE CODES FROM THE ECM P2122 AND P2138 BOTH RELATING TO APP. FIRST TIME IT HAPPENED WAS IN RAIN STORM IN MOTION, APP PEDAL WAS REPLACED WITH NEW OEM PART BUT THE PROBLEM PERSISTS. I SUSPECT WATER INTRUSION FROM WIPER COWLING AFFECTING ELECTRIC HARNESS. THIS PROBLEM DOES NOT EXIST DURING DRY SEASON. AFTER MANY HOURS OF ONLINE RESEARCH I HAVE FOUND THAT THIS IS A WIDESPREAD PROBLEM IN CHEVROLET VEHICLES.

Mileage: 126,000

TL* THE CONTACT OWNS A 2016 CHEVROLET COLORADO. THE CONTACT STATED THAT ON SEVERAL OCCASIONS WHILE DRIVING AT UNDISCLOSED SPEEDS, THE VEHICLE LOSS MOTIVE POWER AND STALLED WITHOUT WARNING. THE VEHICLE WAS PULLED OVER, RESTARTED, AND OPERATED AS INTENDED. THE CONTACT REACHED OUT TO JK CHEVROLET (1451 HIGHWAY 69 N, NEDERLAND, TX 77627, (409) 527-4142) AND WAS INFORMED THAT THE VEHICLE WAS NOT UNDER RECALL AND THAT THERE WOULD A FEE TO HAVE THE VEHICLE DIAGNOSED. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 40,000.

Mileage: 40,000

THERE IS AN ELECTRICAL ISSUE THAT CAUSES THE TRUCK TO COMPLETELY SHUT DOWN AND LOSE ALL POWER SOMETIMES WHILE DRIVING WITH DO WARNING. WHEN THIS HAPPENS, POWER STEERING AND POWER BRAKES ARE LOST. THIS HAPPENED TO ME WHILE TURNING INTO A GAS STATION AND I NEARLY WRECKED INTO ANOTHER VEHICLE AS I COULDN'T STOP OR TURN.

Mileage: 170,000

TL* THE CONTACT OWNS A 2016 CHEVROLET COLORADO. THE CONTACT STATED THAT WHILE DRIVING AT AN UNDISCLOSED SPEED, THERE WAS AN ABNORMALLY LOUD SOUND LIKE AND EXPLOSION COMING FROM UNDER THE HOOD OF THE VEHICLE. THE CONTACT COASTED TO THE SIDE OF THE ROADWAY AND HAD THE VEHICLE TOWED TO TOM GILL CHEVROLET (7830 COMMERCE DR, FLORENCE, KY 41042) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE HIGH-PRESSURE FUEL PUMP BOLTS BECAME DETACHED. THE VEHICLE WAS REPAIRED. THE CONTACT STATED THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 18V358000 (FUEL SYSTEM, GASOLINE). THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 64,665.

Mileage: 64,665

CONSTANT CODE P1427 SHOWS VACUME LEAK, CAN'T BE FOUND 2) THE DASH GO COMPLETELY DARK ON AND OFF, BOTH THE ODOMETER SIDE AND THE DIGITAL PANEL FOR RADIO ETC

Mileage: 30,103

THE TRUCK WILL RANDOMLY SHUT OFF WHILE DRIVING, SITTING STILL, AND THEN START BACK UP WITH NO PROBLEM. THE TRUCK ISN'T REPORTING ANY CODES BUT THE ENGINE HAS RANDOMLY CUT OFF DURING OPERATION ON SEVERAL OCCASIONS. I HAVE READ MANY FORUMS OF OTHERS HAVING THIS ISSUE. THIS HAS HAPPENED TO ME WHILE PULLING OUT INTO TRAFFIC ON A CITY STREET AND ALMOST CAUSING A MAJOR ACCIDENT. IT OCCURRED AT SEVERAL TRAFFIC LIGHTS AND ALSO MERGING ONTO A HIGHWAY EXIT. THIS IS A MAJOR PROBLEM WITH SERIOUS RISKS INVOLVED!

Mileage: 50,000

THE CHECK ENGINE LIGHT CAME ON IT POPPED UP ENGINE POWER REDUCED WOULDN'T GO OVER 35 MILES AND HR ON THE INTERSTATE IS NOT A GOOD THING. I PULLED OVER TURNED CAR OFF. TURNED KEY BACK ON STARTED IT WAS FINE. A COUPLE WEEKS LATER PULLING OUT IN TRAFFIC CHECK ENGINE.LIGHT.COMES ON AND LOSES POWER AGAIN ALMOST GET HIT. GO TO PARTS.STORE TO PLUG MACHINE FOR DIAGNOSIS. FIRST IT SAID UNKNOWN. SO WE DO IT AGAIN PA201 00 CODE. COMPUTER SAID CO2 SENSOR. I WAS TOLD A TSB BULLETIN CAME IN FOR THIS SOFTWARE UPDATE BUT NOBODY WANTS TO TALK ABOUT IT THEY JUST WANT TO FIX IT THEN CHARGE.U FOR IT.BUT.I THINK IT SHOULD BE COVERED SOFTWARE ISSUES SHOULDN'T BE ABSORBED AT CUSTOMERS EXSPENSE. MY TRUCK IS A TURBO DIESEL ITS HARD TO FIND PARTS FOR IT AT PART STORE AND DIAGNOSTIC MACHINE JUST GETTING IN OIL FILTERS. ANYWAY IN RESPONSE OF SOFTWARE IT SHOULD BE COVERED BY SOMEONE ELSE BESIDES ME. BEFORE IT LOSES POWER AND VET'S ME KILLED OR I. A WRECK NEED ISSUE RESOLVED

Mileage: 39,000

I WAS TURNING THROUGH A BUSY INTERSECTION AND AS I COMPLETED MY TURN AND CAME TO A STOP THE ENGINE SHUT DOWN. PRIOR TO MAKING THE TURN THE ENGINE FELT LIKE IT WAS GOING TO STALL OUT AND QUIT RUNNING. I HAVE EXPERIENCED THE SLUGGISH IDLE BEFORE BUT IT NEVER SHUT DOWN LIKE IT DID TODAY. A GOOGLE SEARCH REVEALED THAT CHEVROLET HAS A TECHNICAL SB, 16-NA-284 THAT SAYS A REPROGRAM OF THE COMPUTER IS REQUIRED TO CORRECT THE PROBLEM. IN MY OPINION THIS IS A SAFETY ISSUE. I WAS FORTUNATE TO HAVE COMPLETED MY TURN BEFORE IT QUIT RUNNING BUT SOMEONE ELSE MAY NOT EVEN BE AWARE OF THE SITUATION PUTTING THEMSELVES AT RISK IF IT WOULD HAPPEN TO QUIT DURING THE TURN WITH ONCOMING TRAFFIC.

Mileage: 41,800

TL* THE CONTACT OWNS A 2016 CHEVROLET COLORADO. WHILE DRIVING 30 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT WAS ABLE TO RESTART THE VEHICLE. ADDITIONALLY, WHEN THE VEHICLE WAS PLACED IN PARK, THE IGNITION KEY FAILED TO CYCLE TO THE OFF POSITION. THE VEHICLE WAS TAKEN TO RYDELL CHEVROLET (LOCATED AT 1309, 18600 DEVONSHIRE ST, NORTHRIDGE, CA 91324, (866) 802-5628) TO BE DIAGNOSED, BUT THE MECHANIC WAS UNABLE TO RETRIEVE A FAULT CODE OR DUPLICATE THE FAILURES. THE VEHICLE WAS NOT REPAIRED. THE FAILURES WERE INTERMITTENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE APPROXIMATE FAILURE MILEAGE WAS 44,000. THE VIN WAS NOT AVAILABLE.

Mileage: 44,000

WHEN PULLING INTO TRAFFIC CIRCLE FROM LOW SPEED, NO THROTTLE RESPONSE. ENGINE DIED OR HAD NO INPUT TO PROPEL VEHICLE. CHANGE OF GEAR SELECTOR HAD NO AFFECT. NOT UNTIL PUSHED TO SIDE OF ROAD, COMPLETELY SHUT OFF AND REMOVE KEY DID ENGINE RESTART OR HAVE ANY RESPONSE TO THROTTLE INPUT.

Mileage: 68,800

2016 CHEVY COLORADO WITH LESS THEN 10,000 MILES. AT LOW RPMS ON ANY INCLINE TRUCK WILL BUCK, SPUTTER, AND HESITATE RATHER THAN AUTOMATICALLY SHIFT INTO LOWER GEAR. IN CITY TRAFFIC, AFTER SLOWING TO MAKE A TURN THEN ACCELERATING, TRUCK WILL BUCK AND SPUTTER AND DRIVE TRAIN WILL MAKE A HAMMER SOUND AFTER ENGAGING . I TOOK IT TO DEALER WHO SAID HE COULD NOT DUPLICATE PROBLEM, ALTHOUGH THIS IS A KNOWN PROBLEM.

Mileage: 10,000

THE VEHICLE WAS ON A STREET STOPPED AT A STOPLIGHT WITH THE LEFT TURN SIGNAL ON AND IN DRIVE. THE VEHICLE RADIO AND ELECTRICAL SYSTEM POWERED OFF AND RESET WITHOUT KNOWN CAUSE AND THE VEHICLE ENGINE AND ELECTRICAL SYSTEM SHUT DOWN. THE VEHICLE WAS RESTARTED BY PLACING THE VEHICLE IN PARK AND USING THE KEY TO START NORMALLY.

Mileage: 30,000

COMING OFF STEEP HILL AND TRANSMISSION DOWNSHIFTED TO LOW GEAR, THE ENGINE REVVED UP AND WOULD NOT SHIFT OUT. TRIED GIVING AND LETTING OFF GAS, FINALLY PUT IT IN NEUTRAL TO LET RPM'S GO DOWN AND PUT BACK IN DRIVE AND IT FINALLY SHIFTED ON OUT. TOOK TO DEALERSHIP WHERE I PURCHASED AND THEY TEST DROVE IT AND SAID THE HILL DESCENT FUNCTION WAS NOT WORKING PROPERLY BUT THERE WERE NO RECALLS OR SOFTWARE UPDATE ISSUE AT THIS TIME THAT WAS COVERED UNDER WARRANTY. ISSUED COMPLAINT TO CHEVROLET AND THEY SAID THERE WERE NOT ENOUGH COMPLAINTS TO ADDRESS THIS ISSUE AT THIS TIME. VERY FRUSTRATED.

Mileage: 27,000

DURING OWNERSHIP OF MY 2016 CHEVROLET COLORADO V6 GASOLINE ENGINE VEHICLE IT HAS HAD NUMEROUS SPUTTERING SITUATIONS WHEN ACCELERATING. THERE IS NO RHYME OR REASON AS TO WHY THE TRUCK SPUTTERS TO ALMOST STALLING. DEALERSHIP CLAIMS THAT THE FUEL INJECTORS ARE PROBABLY DIRTY / FOULED. HAD INJECTOR MAINTENANCE PERFORMED AND TRUCK HAS NO BETTER ENGINE PERFORMANCE AND SPUTTERING CONTINUES. THIS IS DANGEROUS ON HIGHWAY WHEN ACCELERATING IN TRAFFIC. THIS HAS BEEN OCCURRING SINCE ORIGINAL PURCHASE DATE IN OCTOBER 2015.

Mileage: 49,900

TL-CONTACT OWNS A 2016 CHEVY COLORADO... CONTACT STATED THAT HOOD CAME OPEN WHILE DRIVING GOING 5MPH PULLING OUT OF PARKING LOT.. VEHICLE SHUT OFF FIVE TIMES ON FIVE DIFFERENT DAYS. VEHICLE SHUTS OFF GOING FROM A COMPLETE STOP AFTER PRESSING ON GAS PEDAL . VEHICLE SHUT OFF TURNING ONTO MAIN HIGHWAY AND WOULD NOT START BACK UP. HOOD LATCH DOES NOT STAY SHUT. VEHICLE WAS TOWED TO DEALERSHIP AND HOOD LATCH WAS FIXED. VEHICLE WAS AT DEALERSHIP AGAIN A FEW DAYS AGO AND DEALERSHIP STATED NO RECALLS ON VEHICLE. DEALERSHIP ALSO STATED VEHICLE WAS NEVER IN SHOP FOR SHUT OFF REASON. CONTACT ADVISED TO CONTACT CHEVY AT 800-222-1020

Mileage: 21,000

I TOOK MY COLORADO IN TO DEALERSHIP DUE TO ENGINE STALLING, THIS IS A VERY DANGEROUS SAFETY ISSUE, I LOSE STEERING AND BRAKING ABILITY WHEN THE ENGINE STALLS. THE DEALERSHIP SAID THEY ARE AWARE OF THE PROBLEM BUT THEY DO NOT HAVE AN ANSWER ON HOW TO FIX THIS ISSUE. THE DEALERSHIP INFORMED ME THEY HAVE 4 OTHER COLORADO'S DOING THE EXACT SAME THING. ALSO THERE ARE THOUSANDS OF COMPLAINTS ON THE INTERNET OF THIS EXACT SAME DEFECT. I ASK CHEVROLET TO BUY BACK MY COLORADO DUE TO IT IS NOT SAFE TO DRIVE. *JS

Mileage: 6,300

I HAVE A 2016 CHEVY COLORADO 4 CYLINDER TRUCK AT THE DEALER AGAIN. HAD IT IN ABOUT 8-10 MONTHS AGO ON THE ENGINE REVIVING REAL HIGH WHEN COMING TO A STOP. THEY SAID IT WAS PROBABLY THE HILL ASSIST SYSTEM AND NOTHING THEY COULD DO. NOW IT'S CHRONIC. IT CAN REV TO 2200 RPMS AS I COME TO A STOP. I HAVE TO KICK IT IN NEUTRAL TO KEEP FROM HITTING A KID IN A CROSSWALK OR THE CAR IN FRONT OF THE. BOTH FEET ON THE BRAKES. AND, WHEN I PUT IT IN NEUTRAL, IT CAN REV UP TO 4000 RPM'S. IT'S BACK AT THE DEALER NOW AND THEY DON'T HAVE ANY SERVICE BULLETINS ON IT. I TEST DROVE A V-6 300 HP MODEL WHILE THERE AND IT DID THE SAME THING 2 TIMES AND THE SALESMAN DIDN'T NOTICE, BUT IT NEVER GOT OVER 1800 RPMS. SO,THEY HAVEN'T FIXED IT. BUT THEY'RE SINCERELY TRIED BUT I THINK IT'S THE SYSTEM NOT THE DEALER. THE HILL ASSIST SYSTEM DOESN'T PICK UP ON IF YOU'RE LEVEL OR GOING DOWN A HILL ANYMORE. JUST REVS UP, AND IT'S IN 1ST GEAR WHEN COMING TO A STOP.THE TORQUE IS TREMENDOUS ON THE BRAKES. IT'S AN ACCIDENT WAITING TO HAPPEN. I DON'T THINK THE DEALER IS NEGLIGENT IN ANYWAY, I THINK IT'S THE COMPUTER DESIGN ON THAT HILL ASSIST HAS GONE HAYWIRE ON US. *TR

Mileage: 15,303

TL* THE CONTACT OWNS A 2016 CHEVROLET COLORADO. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE SUDDENLY HESITATED WHEN ATTEMPTING TO ACCELERATE. THE VEHICLE WAS TAKEN TO THE DEALER (FERMAN CHEVROLET OF TARBON SPRINGS) ON SEVERAL OCCASIONS, BUT THE FAILURE COULD NOT BE DUPLICATED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 100. UPDATED 08/03/07*LJ *TR

Mileage: 100

AT APPROX. 3500 MILES STARTED EXPERIENCING SHIFTING ISSUES. WHEN SLOWING DOWN TRANSMISSION WANTED TO STAY IN 5TH OR 6TH GEAR. ATTEMPTS TO ACCELERATE CAUSED THE TRUCK TO BOG DOWN UNTIL IT SHIFTED TO A LOWER GEAR TO ACCELERATE AGAIN. WHEN IN CRUISE CONTROL PROBLEM WAS REALLY BAD. WOULD LOOSE AS MUCH AS 5-8 MPH BEFORE A LOWER GEAR WAS FOUND TO MAINTAIN SPEED IN HILLY CONDITIONS. I TOOK VEHICLE IN FOR ITS FIRST SERVICE AT APPROX. 6000 MILES AND HAD DEALER CHECK TRANSMISSION. THEY REMAPPED SHIFT POINTS TO SPEC SOFTWARE. THIS WAS A TEMPORARY FIX. ISSUE IS SLOWLY RETURNING. I HAVE WATCHED ON CONTROL PANEL AT TRANSMISSION OIL TEMP ( TRUCK HAS TRAILER TOWING PACKAGE ETC. THIS IS A CLUSTER FEATURE AVAILABLE.) SEEMS TO SHIFT PROPERLY UNTIL OIL REACHES 100 DEGREES PLUS THEN ISSUE ARRIVES. DEALER RELAYED THERE HAD ONLY BEEN A TECH SERVICE BULLETIN HAS BEEN TO RESET MAP/SHIFT POINTS. RECENTLY PULLED MY BOAT WITH THIS TRUCK AND TRANSMISSION SHIFTED FINE. REALLY WOULD LIKE THIS ISSUE FIXED BECAUSE OTHER THEN THIS PROBLEM REALLY LIKE THE TRUCK.

Mileage: 3,500

ON FEBRUARY 21, 2017 WHILE MAKING A RIGHT TURN, MY 2016 CHEVROLET COLORADO 4WD CREW CAB TURNED ITSELF OFF. ON FEBRUARY 22, 2017 RICHARD LUCAS CHEVROLET LOOKED AT THE VEHICLE FOR 5 HOURS AN DROVE THE VEHICLE AROUND SEVERAL TIMES AND WERE "UNABLE TO DUPLICATE CONCERN." I WAS TOLD TO CALL BACK IF THE ISSUE EVER POPPED UP AGAIN, BUT IT WAS BELIEVED TO BE UNLIKELY. MARCH 28, 2017 WHILE DRIVING HOME FROM WORK, MY COLORADO IGNITION MADE A CLICK NOISE, AND THE IGNITION KEY TURNED ITSELF OFF YET AGAIN. THIS TIME AROUND WAS MUCH DIFFERENT THAN THE FIRST OCCURRENCE AS I HAD NO BRAKES TO STOP THE VEHICLE. TO STOP THE VEHICLE I HAD TO SHIFT INTO PARK WHICH I WAS ABLE TO DO. VEHICLE WILL BE RETURNING TO THE RICHARD LUCAS AUTO CENTER TO BE REEVALUATED. ON THE FIRST OCCURRENCE THE VEHICLE WAS IN MOTION ON A COUNTY ROAD WHILE COMPLETING A TURN AND THE SECOND TIME IT HAPPENED WHILE GOING STRAIGHT ON A RESIDENTIAL STREET.

Mileage: 2,400

VEHICLE STALLS. WHEN NAVIGATING A CORNER TRANSMISSION LOOSES ITS GEAR AND ACTS LIKE IT DOESN'T KNOW WHAT TO DO AND BANGS AND STALLS. ALSO TRANS ACTS CONFUSED STOP AND GO SITUATIONS(CITY) AND BANGS WHEN IT REMEMBERS. ALSO DOES THIS WHEN COASTING ON HIGHWAY AND ACCELERATING AGAIN. IT MAY JUMP DOWN SEVERAL GEARS AND TAKE OFF. VEHICLE ALSO HAS STALLED SEVERAL TIMES AT RED LIGHTS AND HAS A ROUGH IDLE MOST OF THE TIME LIKE IT WANTS TO STALL. BEEN IN SHOP NUMEROUS TIMES FOR SAME THING AND ADVISED CHEVY BUT THEY CANT FIGURE IT OUT AND IT IS STILL DOING IT. ALSO LOOKED ONLINE FOR POSSIBLE ANSWERS AND THERE ARE A LOT OF THESE SAME PROBLEMS REPORTED WITH NO ANSWERS.

Mileage: 1,000

SINCE PURCHASE OF VEHICLE, IT HAD A BUCKING AT SPEED OF 25-40 MPH, THIS WAS VERY NOTICEABLE IN CITY DRIVING, THIS ISSUE WAS COUPLE WITH UNCONTROLLED SURGES IN THE ENGINE. THE VEHICLE WAS PURCHASE OCT 28 OR 30, 2016. I TURNED IN THE VEHICLE FOR SERVICE ON DEC 19, 2016, DEALER SERVICE REP CONFIRM THERE WAS AN ISSUE AND KEEP THE TRUCK FOR REPAIRS. VEHICLE WAS IN THE SERVICE DEPARTMENT FOR OVER 40 CONSECUTIVE DAYS TO FIX ISSUE, DEALERSHIP TECHS, AS WELL AS GM FIELD REPS HAVE LOOKED AT THE VEHICLE AND HAVE TRIED TO FIX IT TO NO AVAIL. ON FEB 8, THE GM REP SAID THERE IS NOTHING WRONG WITH THE VEHICLE AND THE ISSUE WAS A SOFTWARE PROBLEM WITH THIS SPECIFIC TYPE VEHICLE AND THAT THE SOFTWARE THIS VEHICLE HAS IS A NEW SOFTWARE. WHEN I ASKED IF THIS ISSUE IS BEING WORKED BY THE SOFTWARE ENGINEERS FOR SOLUTION THE REP SAID HE HAS NO IDEA AND THAT I SHOULD TAKE THE VEHICLE BACK. THIS ISSUE IS A SAFETY PROBLEM ESPECIALLY WHEN SUDDENLY SURGES WITHOUT CONTROL, PARTICULARLY WHILE DRIVING IN A CITY CENTER A DRIVER CAN CAUSE AN ACCIDENT OR POTENTIALLY HIT A PERSON WHILE LOOSING CONTROL. GM COSTUMER ASSISTANT WAS CONTACTED, BUT THERE WAS NOT HELP AND GM REFUSES TO LET ME KNOW WHEN THE FIXES FOR THIS ISSUE WILL BE OUT. THEREFORE I HAVE REFUSE TO TAKE POSSESSION OF VEHICLE UNTIL IF FIXED CORRECTLY!! THIS ISSUE WILL AFFECT ALL 2016 AND UP COLORADO WITH DURAMAX ENGINE AND NEW SOFTWARE VERSION INSTALLED ON THEM.

Mileage: 1,200

TL* THE CONTACT OWNS A 2016 CHEVROLET COLORADO. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 70 MPH, A LOUD POPPING NOISE CAME FROM THE ENGINE AREA BEFORE THE SPEED SUDDENLY DECREASED TO 40 MPH. DURING THE FAILURE, THE STEERING ASSIST, STABILITRAK, FOUR WHEEL DRIVE AND TRAILER BRAKING SYSTEM WARNING LIGHTS ILLUMINATED. THE FAILURE HAD OCCURRED ON MULTIPLE OCCASIONS. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE FAILURE WAS UNABLE TO BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS 5,700. UPDATED 02/03/17*LJ

Mileage: 5,700

2,400 MILES AND THIS VEHICLE HAS BEEN BACK TO THE DEALER FOUR TIMES FOR "CHUGGING AND SHUTTERING" IN HEAVY TRAFFIC. DRIVING THOUGH AN INTERSECTION WITH HEAVY TRAFFIC IT WILL NOT KEEP UP WITH TRAFFIC BUT TENDS TO BOG DOWN ALMOST GETTING REAR ENDED FROM BEHIND. IF YOU TRY TO SMOOTHLY ACCELERATE IT WILL RAPIDLY DOWNSHIFT AND JUMP FORWARD ALMOST REAR ENDING ANY VEHICLE IN FRONT. VERY UNSAFE TO DRIVE. TRYING TO DRIVE WITH THE FLOW OF TRAFFIC AT 35-40 MPH THE TRUCK SHUTTERS AS IF THE SPARK PLUGS ARE WORN OUT. ALSO TRYING TO ACCELERATE INTO ON COMING TRAFFIC IT WILL SOMETIMES CHUG TO WHERE YOU WONDER IF IT'S GOING MAKE MAKE THE MERGE. VERY FRUSTRATING TO DRIVE FOR A BRAND NEW TRUCK, THE DEALER REPLACED THE TORQUE CONVERTER AT 500 MILES, THEN HAS PREFORMED SERVICE BULLETIN #PIP5342B THREE TIMES WITH ABSOLUTELY NO IMPROVEMENT. GM STATES IN THE BULLETIN "NOTE: PREFORMING THIS CALIBRATION UPDATE MAY NOT TOTALLY ADDRESS THE SHUDDER OR CHUGGING CONCERNS" HOW CAN NEW VEHICLES CONTINUE TO BE SOLD WITH THIS KNOWN PROBLEM? NOT ONLY IS IT FRUSTRATING TRYING TO DRIVE SMOOTHLY, BUT IT IS ALSO A SAFETY CONCERN. DUE TO THE POOR PERFORMANCE THE MILEAGE IS ABOUT 13 MPG IN CITY TRAFFIC, NOT EVEN CLOSE TO THE MILEAGE RATING OF 17 MPG.

Mileage: 2,400

WHILE DRIVING THE 2016 COLORADO, THE TRANSMISSION/ENGINE SEEMS TO HAVE TROUBLE SHIFTING AND ACCELERATING AND THE SHIFT PATTERNS ARE ERRATIC IT SEEMS, MAYBE ITS THE FUEL EFFICIENT CRAP THAT SHUTS DOWN CYLINDERS, MAYBE ITS THE TRANS? . EXPERIENCED IT ON HIGHWAYS AND LOWER SPEEDS, STOP AND GO TRAFFIC, TRUCK'S TRANSMISSION CLUNKS, SHIFTS HARD AT RANDOM AND STUTTERS ALLOT . IT'S AGGRIVATING. WHEN TRYING TO PASS, SEEMS TO BE ZERO ACCELERATION FELT WHEN FLOORING IT THEN SUDDENLY KICKS IN (ROUGHLY)..LIKE OH HEY-I NEED TO GO.. I COULD GET IN A WRECK-ENDED BECAUSE OF THIS AND I BETTER NOT TRY TO PASS ANYONE.. I FEEL MY SAFETY COULD BE AT RISK WITH AS MUCH HESITATION THEN SUDDENLY LURCHES AS IT HAS. I SEE QUITE A FEW COMPLAINTS ALREADY CONCERNING THIS AND/OR DESCRIBING JUST ABOUT THE SAME ORDEAL. DAILY - BUT RANDOM - CITY AND HIGHWAY, TURNING, STRAIGHT ETC. BASICALLY ANY SITUATION BUT IDLE.

Mileage: 23

--- "THE TRANSMISSION DOES NOT DOWNSHIFT FROM A HIGH GEAR (5 OR 6) TO A LOWER GEAR WHEN SLOWING DOWN FROM 45 MPH TO 20 MPH (OR LOWER). WHEN THE ACCELERATOR IS DEPRESSED TO ACCELERATE THE ENGINE BUCKS, VIBRATES, AND DOES NOT ACCELERATE. THE ENGINE RPM DROPS TO 1,000 RPM OR LOWER. IF THE ACCELERATOR IS QUICKLY FLOORED THE TRANSMISSION DOWNSHIFTS SEVERAL GEARS LOWER AND JERKS FORWARD. THIS CONDITION HAPPENS PRIMARILY ON SECONDARY ROADS WHILE DRIVING ALONG THE ROAD AND WHEN PULLING FROM ONE ROAD INTO TRAFFIC ON ANOTHER ROAD. THE SITUATION WHEN PULLING INTO TRAFFIC IS DANGEROUS BECAUSE THE TRUCK DOES NOT ACCELERATE AS IT SHOULD. THIS TRUCK WAS PURCHASED NEW AND HAS 1,500 MILES ON IT. THIS CONDITION HAS BEEN PRESENT SINCE THE TRUCK WAS NEW AND THE SEVERITY VARIES WITH TRUCK SPEED AND ROAD INCLINATION. THE SITUATION HAS BEEN REPORTED TO THE DEALER AND TO CHEVROLET CUSTOMER SERVICE. NO CORRECTIVE ACTIONS HAVE YET TO BE MADE."

Mileage: 1,500

WHEN MERGING ONTO I-70 FREEWAY FROM ON-RAMP, I APPLIED THROTTLE TO MOVE INTO THE TRAFFIC FLOW. ENGINE "STUMBLED" AS IF IN A DEAD SPOT. TRUCK DID NOT ACCELERATE AND APPEARED TO BE LUGGING BADLY. TRANSMISSION WAS IN TOO HIGH A GEAR AND SEEMED TO BE SEARCHING FOR CORRECT GEAR. DURING THIS TIME ONCOMING TRAFFIC WAS FORCED TO BRAKE AND THERE WAS A NEAR MISS OF HAVING A REAR-END COLLISION. ALL I COULD DO WAS WATCH IN THE REAR VIEW MIRROR AS TRAFFIC CONVERGED ON ME. THIS "DEAD THROTTLE / WRONG GEAR" ISSUE HAS HAPPENED REPEATEDLY ON SURFACE STREETS BUT LUCKILY ON SURFACE STREETS I WAS NOT IN SUCH A CRITICAL SITUATION. THIS IS A PROBLEM THAT HAS BEEN REPORTED REPEATEDLY AND AT MANY PLACES ON THE INTERNET. WHEN WILL NHTSA FORCE GM TO ADDRESS THIS ISSUE? HOPEFULLY YOU WILL ACT BEFORE THIS RESULTS IN SERIOUS INJURY OR FATALITIES (IF IT ALREADY HAS NOT). PLEASE ACT!

Mileage: 1,700

ENGINE SEEMS TO LAG UNDER QUICK ACCELERATION. PROBLEM OCCURS MOST OFTEN WHEN ACCELERATING FROM A TURN OR WHEN CHANGING LANES UNDER ACCELERATION. SPEEDS OF OCCURRENCE MOSTLY APPROXIMATELY 20-25 MPH. REQUESTED CHECKS AND SERVICE AT A DEALERSHIP ONLY TO BE GIVEN A SERVICE BULLETIN FROM GM STATING THIS WAS A NORMAL PART OF THE TRACTION MANAGEMENT SYSTEM. MY PREVIOUS VEHICLE (2014 SILVERADO) WAS ALSO LISTED ON THE BULLETIN, BUT THE PROBLEM WAS NEVER NOTICED ON THIS VEHICLE. I SEE THIS ISSUE AS AN INCREASED RISK OF A COLLISION WITH THE HIGHEST RISK BEING A REAR END COLLISION. THIS NEEDS TO BE ADDRESSED AND FIXED.

Mileage: 25

DRIVING AT ABOUT 60 MILES A HOUR AND LOST ALL POWER ENGINE WAS RUNNING BUT GOING NO WERE ALL LIGHT WERE LITE ON DASH LIKE YOU TURN KEY ON BEFORE STARTING THANK GOD NO ONE WAS COMING THE OTHER WAY OR THE CAR BEHIND ME WOULD HAVE HIT ME. HE WAS A GOOD DRIVER. SHUT IT OFF AND RESTARTED IT THEN IT WOULD RUN WITH ALL LIGHT ON DASH EVEN BRAKE LIGHT AND ANTI SKID LIGHT AND IT SAID ON INFRO. RUNNING AT REDUCED SPEED. DROVE TO MY HOME A SLOW SPEED IT LET ME. SHUT IT DOWN LET IT SIT A FEW MIN. RESTARTED IT STILL THE SAME. SHUT IT DOWN FOR ABOUT TEN MIM. RESTARTED IT. SEEM TO RUN OK BUT CHECK ENGINE LIGHT IS TILL ON NOW I AFRAID THE WILL JUST RESET IT AND SAY IT IS OK. AND NEXT TIME I WON'T BE SO LUCKY. IT HAS 5500 MILES ON IT. I DID SEE MY LIFE BEFORE MY EYES HOPPING IT DOSE NOT HAPPEN TO OTHERS. TAKING DEALER TOMORROW IT HAPPEN AT ABOUT 5PM 3/24/2016

Mileage: 5,500