2005 HUMMER H2 Electrical System Problems

27 complaints about Electrical System

27
Complaints
0
Crashes
1
Fires
0
Deaths

High Severity Issue

This component has been associated with crashes, fires, or deaths.

This Problem Across All Years

All Electrical System Complaints (27)

Jul 29, 2025

The contact owns a 2005 Hummer H2. The contact stated that while parking in the mountains, the vehicle was in the park position, and it unexpectedly rolled and stopped at a boulder. There were no warning lights illuminated. The door hit the driver and knocked him to the ground, and he sustained an injury to his head, but medical attention was not provided. Another person on an ATV provided a jump start, but the vehicle failed to restart. The contact walked several miles to get assistance. The contact was able to view YouTube and replace the part. The contact stated that the transmission shifter cable had failed. There was a hole in the shaft connected to the transmission to the C clip. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 111,400.

Mileage: 111,400

May 4, 2021

WHILE TRAVELING ON THE MAIN ROADS THE SPEEDOMETER INTERMITTENTLY MALFUNCTIONS THEN DROPS TO ZERO, WHEREAS I'M LITERALLY UNABLE TO DETERMINE MY SPEED THIS SEEMS TO OCCUR WHEN THE ENGINE WARMS UP AND I BEEN DRIVING FOR BETTER THAN A HALF HOUR.

Mileage: 41,280

Mar 4, 2020

THE COMPUTER IN THE H2 HUMMER MALFUNCTION. WIPERS WILL NOT TURN OFF. 4 WHEEL DRIVE WILL NOT ENGAGE. ENGINE LIGHT COMES ON. EVERYTHING THE COMPUTER CONTROLS IS FAILING.

Mileage: 160,000

Jan 24, 2018

HEATER FAN BLOWER MOTOR STARTED WORKING INTERMITTENTLY WHILE CAR IN MOTION, THEN SMELL OF BURNING ELECTRICAL. WIRING HARNESS TO HEATER UNDER THE GLOVEBOX WAS BURNING HOT TO THE TOUCH AND MELTED ALL THE WIRES. PLASTIC WIRE HARNESS COMPONENT COMPLETELY DESTROYED AND ALMOST CAUGHT FIRE.

Mileage: 120,000

Jan 24, 2018

HEATER FAN CONTROL KNOB OVERHEATS. WHEN HEATER WAS IN OPERATION THE HEATER CONTROL KNOB AREA ABOVE AND BELOW THE CVERY HOT TO THE TOUCH, HEATING UP RADIO AND OTHER FRONT DASH COMPONENTS. PRIOR TO THIS, INSTRUMENT PANEL GAUGES STOPPED WORKING COMPLETELY FOR GAS GAUGE AND RPMS, AND STOPS WORKING INTERMITTENTLY FOR SPEEDOMETER (OCCURRED AROUND 100K MILES).

Mileage: 119,000

Apr 28, 2017

GET IN START THE VEHICLE, SEAT HEAT COMES ON. I TURN IT OFF IT COMES BACK ON SECONDS LATER. IT WILL NOT GO OFF AND STAY OFF. IT DOES NOT MATTER IF IM DRIVING OR PARKED. SEAT HEAT COMES ON BY ITS SELF.

Mileage: 141,600

Sep 19, 2016

CAR WILL NOT START DUE TO PASS-LOCK OR OTHER MALFUNCTION COMPONENT. MUST TRY AND FAIL AND THEN WAIT FOR CAR TO 'RE-SET' EACH AND EVERY TIME THE VEHICLE IS TRIED TO BE STARTED. AFTER 10 MINUTES THE CAR'S ENGINE COMPLETELY KILLS, EVEN IF CAR IS IN MOTION. REPROGRAMMED KEYS AND THIS ONLY WORKED FOR A WEEK. NOW EACH AND EVERY DOOR LOCK, BACK HATCH LOCK, ETC... HAS FAILED. THE HATCH IS LOCKED CLOSED AND THE DOORS WILL ONLY UNLOCK OR LOCK PHYSICALLY WITH YOUR HAND. THE SPEEDOMETER FAILS INTERMITTENTLY, ALONG WITH OTHER GAUGES WORKING ONLY SOMETIMES.

Mileage: 98,000

Jul 15, 2015

TL* THE CONTACT OWNS A 2005 HUMMER H2. THE CONTACT STATED THAT THE DRIVER SIDE HEATING ELEMENT TURNED ON WITHOUT WARNING AND FAILED TO TURN OFF. THE VEHICLE WAS TAKEN TO DEALER THREE TIMES, WHERE IT WAS DIAGNOSED THAT THE DRIVER SEAT MODULE NEEDED TO BE REPROGRAMMED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 48,000.

Mileage: 48,000

May 20, 2015

IN THE MIDST OF TRAVELING ON VACATION, THE SPEEDOMETER AND MANY OF THE OTHER DASH COMPONENTS JUST QUIT WORKING. I HAD TO RELY SOLELY ON THE PORTABLE GPS TO DETERMINE THE SPEED THAT I WAS GOING. THIS IS UNSAFE, AND THIS IS AN ISSUE THAT HUMMER MOST CERTAINLY NEEDS TO CORRECT.

Mileage: 12,000

Oct 25, 2014

STARTING IN OCTOBER 2013 MY SPEEDOMETER HAS NOT FUNCTIONED PROPERLY. IT DOES NOT DISPLAY THE CORRECT SPEED NO MATTER HOW FAST OR SLOW YOU ARE GOING. IT IS EITHER STUCK AT 0 OR BOTTOMS OUT OVER 120. I HAVE NO IDEA HOW FAST I AM DRIVING UNLESS I USE MY PORTABLE GPS THAT SHOWS SPEED. IF IT WASN'T FOR MY GPS THEN I COULD GET INTO AN ACCIDENT OR GET A TICKET BECAUSE I WOULD NOT KNOW HOW FAST I AM GOING. THIS IS A MANUFACTURE DEFECT AS I AM NOT THE ONLY HUMMER OWNER WITH THIS ISSUE. GM NEEDS TO FIX THIS PROBLEM ASAP. *TR

Mileage: 5

Aug 4, 2014

WHILE DRIVING ON I-81 NEAR WINCHESTER, VA., I NOTICED MY SPEEDOMETER MOVING ERRATICALLY. I HAVE NOT DRIVEN IT MUCH SINCE THIS MISHAP. AS OF AUGUST 4, 2014 THE MILEAGE IS ONLY 55,264. I JUST NOTICED A SUIT FILED AGAINST GM FOR THIS PROBLEM. I WAS NEVER NOTIFIED ABOUT ANY RECALL. IS THERE ANY RECOURSE FOR ME? *TR

Mileage: 49,588

Oct 16, 2013

TL* THE CONTACT OWNS A 2005 HUMMER H2. THE CONTACT STATED THAT THE INSTRUMENT GAUGES FLUCTUATED THEN FAILED TO DISPLAY PROPER READINGS. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS FOUND THAT THE INSTRUMENT CLUSTER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED ABOUT THE FAILURE. THE FAILURE MILEAGE WAS 62,000.

Mileage: 62,000

Jul 15, 2012 Fire

DRIVING HOME I BEGAN TO SMELL AND ELECTRICAL BURNING SMELL. IT BEGAN VERY QUICKLY AND CAME AND WENT FOR ABOUT 2 MILES. I PULLED OVER AND LOOKED AND COULD NOT SEE SMOKE OR FIRE SO I CONTINUED HOME. I DROVE THE REMAINING 4 MILES TO MY HOME AND IMMEDIATELY GOT MY HUSBAND TO CHECK AS THE CAB HAD FILLED WITH THE SMELL OF AN ELECTRICAL FIRE. HE LOCATED THE AREA THE SMELL WAS STRONGEST AND THEN WATCHED AS SMOKE CAME OUT. HE UNBOLTED THE WINDSHIELD WASHER FLUID TANK AND THE MOTOR ON BOTTOM HAD ACTUALLY BURNED, MELTED AND WAS ON THE VERGE OF CAUSING SOME SERIOUS DAMAGE. THE WIPERS WERE NOT BEING USED AND HAD NOT BEEN TOUCHED. THIS VEHICLE IS EQUIPPED WITH A HEATER FOR THE FLUID. *TR

Mileage: 176,000

Mar 26, 2012

WIPERS STOPPED ON THE FREEWAY. RAINING REALLY HARD. *TR

Sep 8, 2011

THE SPEEDOMETER AND TACHOMETER IN MY VEHICLE GET STUCK AT ANY SPEED. BOTH METERS EITHER MAX OUT OR DROP TO ZERO AT NUMEROUS SPEEDS. AT SLOW SPEEDS THIS PROBLEMS IS NOT A MAJOR ISSUE, BUT AT SPEEDS ABOVE 45 MPH THE PROBLEM CREATES A DANGEROUS SITUATION. WHEN PULLING A TRAILER ON THE INTERSTATE AT 70 MPH THE SPEEDOMETER HAS DROPPED TO ZERO. THIS CREATES A DANGEROUS SITUATION AN INABILITY TO DETERMINE REQUIRED SPEEDS ON DIFFERENT SECTIONS OF THE HIGHWAY. A PROBLEM SUCH AS THIS ONE SHOULD ONLY OCCUR IN A VEHICLE 25 OR 30 YEARS OLD AND NOT 6 YRS OLD. IT'S CLEAR THAT THIS IS A FACTORY DEFECT AND AN ALERT SHOULD BE ISSUED FOR FACTORY REPAIR OF THIS DEFECT. THANK YOU *TR

Mileage: 89,000

Jan 19, 2011

MY TACHOMETER WAS STARTING TO STICK AND NOT IT DOESN'T MOVE AT ALL. NOW MY SPEEDOMETER IS STARTING TO STICK. THE CONSEQUENCES OF NO SPEEDOMETER ARE TICKETS, ACCIDENTS FROM NOT BEING ABLE TO GO SAFE SPEEDS IN VARIOUS CONDITIONS. *TR

Mileage: 70,000

Dec 29, 2010

WINDSHIELD WASHER MOTOR RUNS, CAN NOT CONTROL, HAD TO REMOVE FUSE TO STOP MOTOR. *TR

Mileage: 50,000

Dec 24, 2010

2005 HUMMER H2 - WINDSHIELD WIPER NOT FUNCTIONING PROPERLY. SEEMS TO BE A DEFECT WITH WIPER MODULE. *TR

Mileage: 43,000

Nov 5, 2010

MY 2005 H2 HUMMER SPEEDOMETER GETS STUCK ,I HAVE SEEN OVER THE PAST WEEK THAT IT GETS STUCK EVERY DAY AND I CANT TELL HOW FAST IM GOING THIS IS A SAFETY ISSUE AND I HAVE LOOKED ON THE WEB AND HAVE SEEN OTHER COMPLAINTS FOR THE SAME REASON. *TR

Nov 2, 2010

THE WINDSHIELD WIPERS ON THE VEHICLE WILL AT FIRST WORK INTERMITTENTLY, GOING ON AND OFF AT THEIR OWN WILL. THEN THE WINDSHIELD WASHER PUMP WILL TURN ON WITHOUT WARNING, DISCHARGING ALL THE WASHER FLUID ONTO THE WINDSHIELD. THE PUMP WILL CONTINUE TO PUMP, EVEN WITH THE VEHICLE TURNED OFF. THIS CAN ONLY BE REMEDIED WITH THE DISCONNECTION OF THE BATTERY. THE WIPERS WILL THEN NOT WORK. THIS CAN OCCUR AT ANY MOMENT, BEING VERY DANGEROUS. *TR

Mileage: 40,135

Jul 30, 2010

SPEEDOMETER NOT WORKING AT ALL. "0" ALWAYS. SOMETIMES WHEN I DRIVE 40-50 ML/H THEN IT WORKS BUT IS NOT CORRECT AND THEN GOES TO ZERO AGAIN. I HAVE TO GET IT FIX TO KNOW HOW FAST IM GOING. *TR

Mileage: 47,000

Jun 11, 2010

THE INSTRUMENT CLUSTER IS NOT WORKING PROPERLY, THE SPEEDOMETER GETS STUCK AND JUMPS AROUND RANDOMLY, THE RPM GAUGE STAYS MAXED OUT, SEEMS TO RESET ITSELF PERIODICALLY AND WORKS RANDOMLY THEN GOES HAYWIRE AGAIN RENDERING THE DRIVER CLUELESS AS TO WHAT SPEED THEY ARE ACTUALLY DRIVING. *TR

Mileage: 23,817

Feb 27, 2010

WHEN DRIVING FOR A LONG DISTANCE (SEVERAL HOURS ) THE SPEEDOMETER ALL OF A SUDDEN DROPS TO 5MPH OR SO EVEN THOUGH I AM DRIVING AT 65 MPH. THIS HAS HAPPENED TWICE NOW IN THE LAST MONTH ON MY 2005 HUMMER H2. THE SPEEDOMETER ONLY CORRECTS AFTER I STOP AND TURN OFF THE ENGINE.*TR

Feb 22, 2010

TL* THE CONTACT OWNS A 2005 HUMMER H2. THE CONTACT STARTED THE IGNITION, SUDDENLY THE REAR WINDSHIELD WASHER DISPENSED FLUID WITHOUT ACTIVATION. THE IDENTICAL FAILURE OCCURRED WITH THE FRONT WINDSHIELD WIPER DISPENSER. THE DRIVER DISCONNECTED THE FUSE WHICH RESULTED IN THE WINDSHIELD WIPERS TO NOT OPERATE. THE VEHICLE HAS NOT BEEN REPAIRED AT THIS TIME. THE FAILURE MILEAGE WAS 50,000. THE VIN WAS UNAVAILABLE.

Mileage: 50,000

Nov 15, 2009

I STARTED MY VEHICLE 4 DAYS AGO AND THE SPEEDOMETER AND GAUGES WERE FROZEN AND DID NOT OPERATE AT ALL. I DROVE TO THE STORE AND THE GAUGE REMAINED AT 0 THE ENTIRE TIME. WHEN YOU ACCELERATE THE SPEEDOMETER DOES NOT MOVE FROM 0 MPH. I TURNED THE VEHICLE OFF AND TURNED IT BACK ON AND THERE WAS NO CHANGE. YESTERDAY WHEN I STARTED THE VEHICLE THE GAUGE WOULD ONLY MOVE BETWEEN 30-50 MPH. TODAY WHEN I STARTED THE VEHICLE IT IS FROZEN AT 120 MPH AND THE KHM(?) DOES NOT MOVE PAST 1.WHEN I ACCELERATE NEITHER OF THE TWO GAUGES ARE FUNCTIONING. I HAVE YET TO REPAIR IT BC IT HAS HAPPENED JUST A FEW DAYS AGO BUT I WAS TOLD THAT I AM LOOKING AT A VERY LARGE REPAIR COST TO REPLACE THE ENTIRE DASHBOARD CLUSTER. THE SAME THING HAPPENED IN MY 2003 MODEL AND I SOLD THE VEHICLE. AS WELL THE REAR SUSPENSION IS LOWERING ON ITS OWN TO THE LOWEST POSITION AND DOES NOT GO BACK TO THE NORMAL HEIGHT. I HAVE TO PUSH THE BUTTON ON THE INTERIOR. WHEN I RETURN TO THE VEHICLE THE FOLLOWING MORNING THE REAR SUSPENSION HAS DROPPED DOWN AGAIN. *TR

Mileage: 78,490

Jan 1, 2009

BOUGHT VEHICLE NEW; SPEEDOMETER MALFUNCTIONED AT 36,000 MILES. *TR

Mileage: 36,000

May 2, 2008

COMPUTER DOESN'T STAY ON TRACK/

Mileage: 52,118