# NHTSA Defect Petition DP05010
> **UNSTABLE HEADLAMPS** · Opened 2005-12-21 · Closed 2006-04-10
## Investigation
- **Action number:** DP05010
- **Type:** Defect Petition
- **Open date:** 2005-12-21
- **Close date:** 2006-04-10
- **Manufacturer:** General Motors, LLC
- **Affected makes:** PONTIAC
- **Affected components:** EXTERIOR LIGHTING:HEADLIGHTS
- **Affected model years:** 2004
- **Affected (make, year) variants:** 1
## Summary

ODI RECEIVED A PETITION FROM MR. BRAD LAMB OF THE NORTH CAROLINA CONSUMERS COUNCIL, REQUESTING INVESTIGATION OF AN ALLEGED DEFECT EVIDENCED BY SHAKE OR BOUNCE OF THE HEADLAMPS ON MODEL YEAR 2004 PONTIAC GRAND PRIX VEHICLES.ODI'S PREVIOUS REVIEW OF THIS ISSUE IN OCTOBER 2003, DETERMINED THAT IT DID NOT WARRANT INVESTIGATION.ODI'S CURRENT ANALYSIS IDENTIFIED 36 COMPLAINTS IN THE CONSUMER COMPLAINT DATABASE; AND A DECLINING TREND OF REPORTS WAS EVIDENT.A FEW FIELD REPORTS OF SIMILAR NATURE WERE ALSO SUBMITTED BY THE MANUFACTURER IN ITS EARLY WARNING REPORTING DATA.A SERVICE BULLETIN AND A REVISED HEADLAMP RETAINING BRACKET WERE ISSUED IN NOVEMBER 2004, AND THESE ACTIONS ARE SEEN AS APPROPRIATE IN ADDRESSING THE PROBLEM WHILE ALL OF THE SUBJECT VEHICLES ARE STILL COVERED BY THE NEW VEHICLE WARRANTY.COMPROMISE TO SAFE VEHICLE OPERATION AS A RESULT OF THIS ISSUE WAS NOT IDENTIFIED.IT IS UNLIKELY THAT INVESTIGATION WOULD RESULT IN A NHTSA ORDER FOR THE RECALL AND REMEDY OF THIS PROBLEM.

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=DP05010)
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