1998 GMC SIERRA Suspension Problems

WHILE DRIVING, IF MOVING STEERING WHEEL JUST A LITTLE TO RIGHT TO MAINTAIN PROPER LANE, VEHICLE WOULD SUDDENLY JERK TO THE RIGHT AND CAUSE LOSS OF STEERING CONTROL. DEALER NOTIFIED, AND WAS UNABLE TO CORRECT THE PROBLEM. FEEL FREE TO PROVIDE ANY FURTHER INFORMATION.*AK

THE FRONT BALL JOINT WAS REPLACED BECAUSE IT HAD COMPLETELY DETERIORATED. NLM

THE FRAME RESONANT VIBRATION FREQUENCY ON THIS TRUCK PRECISELY MATCHES THE TIRE ROTATION FREAUENCY AT ABOUT 45 MPH. THIS CAUSES VERY ANOYING BOUNCING OF THE REAR END AT 45 MPH. WHEN BRAKIN AT 45 MPH, THE REAR END JUMPS ABOUT UNCONTROLABLY AND COULD EASILY LEAD TO AN ACCIDENT. I BELIEVE IT IS A DESIGN FLAW. ONLY THE EXTENDED CAB MODELS HAVE THIS PROBLEM. IF ONE USES THE EXACT SAME FRAME THAT IS ON THE REGULAR CAB MODEL FOR THE EXTENDED CAB MODEL AND SIMPLY MAKES IT LONGER, THE STIFFNESS WILL BE LESS AND COULD LEAD TO THIS PROBLEM. I BELIEVE IT IS THE RESULT OF INADEQUATE FRAME STIFFNESS, AND I BELIEVE GMC KNOWS (AND HAS KNOWN) THIS AND HAS MADE A BUSINESS DECISION TO PUT UP WITH THE COMPLAINTS RATHER THAN FIX THE PROBLEM. ALL OWNERS OF SIMILAR MODELS OF GMC AND CHEVY THAT I HAVE TALKED TO HAVE TOLD ME THEY HAVE THE SAME PROBLEM. GM SHOULD NOT BE ALLOWED TO IGNORE A POTENTIAL SAFETY PROBLEM.

WHEN MAKING A CURVE TO RIGHT WHEEL JERKS TO THE RIGHT. DEALER HAS INSPECTED THE VEHICLE . *AK

WHEN DRIVING VEHICLE IT DRIVES VERY ROUGH, MEANING THE VEHILCE VIBRATES AND SHAKES CONSUMER TOOK THE VEHICLE TO THE DEALERSHIP, AND THEY REPLACED THE ROTORS/PADS AND SHOES, REAR AXLE, AND HUBS. BUT VEHICLE STILL SHAKES. *AK

WHILE DRIVING AT ANY SPEED TRUCK WANDERS ALL OVER THE ROAD. IT FEELS LIKE THE TRUCK WILL ROLLOVER WITH THE SLIGHTEST TURN. THE DEALER HAS BEEN NOTIFIED ABOUT THIS PROBLEM. PLEASE PROVIDE ANY FURTHER DETAILS. *AK

WITHIN 10,000 MILES THE REAR END OF THE VEHICLE HAS BEEN REPLACED THREE TIMES. CAUSE UNKNOWN. PLEASE GIVE ANY FURTHER DETAILS. *AK

DEALER HAS HAD TO WORK ON FRONT SUSPENSION SEVERAL TIMES. MANUFACTURER HAS BEEN NOTIFIED. *AK

WHILE DRIVING AT 45 MPH VEHICLE IS VIBRATING, AND WHEN CONSUMER IS BACKING UP VEHICLE IS STILL VIBRATING. *AK

WHILE DRIVING AT 55 MPH ON THE HIGHWAY THE VEHICLE WILL START TO VIRBRATE AND BOUNCE. ALSO, THERE IS A PROBLEM WITHIN THE FRAME AND WITHIN THE WHEEL BASE WHICH IS AT A DISTANCE FROM THE WHEELS IN THE EXTENDED CAB. *AK *ML

TRUCK VIBRATES.