Issue ID | 845038 |
Internal NHTSA # | 10383247 |
Manufacurer | GENERAL MOTORS LLC |
Brand | GMC |
Model | SIERRA 3500 |
Model Year | 2011 |
File date | 23/01/11 |
Component | SUSPENSION:FRONT |
Product type code | VEHICLE |
Description of the problem | While driving a gmc 3500 denali hd 4x4 equipped with the diesel engine and automatic transmission, with less than 90 miles on it, the rear adjustment bracket for the left side torsion bar broke and fell off the vehicle while going over a speed bump at less than 20mph. More specifically, the part mounts near or in the crossmember brace and is used to adjust the preload on the torsion bar. After the part broke and fell off the vehicle had a noticeable list to the left side. The part is a cast part that appears to have failed in overload (underdesigned) or due to high stress concentrations (poor fit/tolerance issues). At city speeds i wouldn't expect much more than what happened to me. However, at highway speeds with a loaded truck or towing a trailer, the failure could result in control issues and therefore, in my opinion, should be classified as a safety issue. The dealer took the vehicle back and had a non-gmc facility "rebuild" the front suspension. According to the dealer, gmc has had at least one other similar incident. I currently have the broken part and possibly the original part from the right hand side of the vehicle. *ln |
Vehicle Mileage at Failure | 88 |
Number of Occurences | 1 |
Source of the issue | NHTSA WEB SITE |
City and State | HOMER, AK |
VIN pattern | 1GT426C80BFXXXXXX |
Was vehicle invloved in a crash? | N |
Was vehicle involved in a fire? | N |
Was incedent reported to police? | N |
Was medical attention required? | |
Was part original equipment? | |
No. of injured persons | |
No. of fatalities | |
Date of purchase | 04/07/24 |
Was original owner? | N |
Anti-lock brakes | N |
Cruise control | N |
Number of cylinders | 8 |
Drive train type | 4WD |
Transmission type | |
Vehicle speed | 20 |
DoT tire identifier | |
Tire size | |
Location of tire code | |
Type of tire failure code | |
Was defective tire repaired? | |
Date of manufacture | |
Type of child seat code | |
Type of restraint | |
Dealer's name | |
Dealer's telephone number | |
Dealer's city | |
Dealer's state code | |
Dealer's ZIP code |