Front suspension coil spring fracture

An NHTSA Preliminary Evaluation into Chevrolet vehicles. Closed 4 November 2003.

Investigation
PE03031
Type
Preliminary Evaluation
Opened
14 July 2003
Closed
4 November 2003

What NHTSA investigated

The subject vehicles are equipped with a coil spring-over-strut front suspension with the spring itself resting in compression between two polymer ISOLATORS.PE03-031 was opened to investigate reports of fracture of this spring.the fractures occur in the first active coil above the lower isolator and apparently originate in corrosion pits found beneath regions of damaged epoxy coating.consumer complaints and warranty data show that the failures occur predominantly in the ?corrosion states? And tend to appear outside of the standard 36,000 mile warranty term.these data also suggest that these failures will continue to happen.slightly more than one third of the consumer complaints have involved the broken spring coil contacting the adjacent tire.odi is upgrading PE03-031 to an engineering analysis to gather further information concerning the scope and consequences of these failures.

Vehicles covered

MakeModelModel years
ChevroletMALIBU1999
PontiacGRAND AM1999

Source

From NHTSA’s investigation file, rebuilt daily. To report a problem with your own vehicle, go to nhtsa.gov/report-a-safety-problem. All open investigations.