NHTSA Office of Defects Investigation
Engineering Analysis EA87-009: REAR BRAKES
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA87-009 on January 21, 1987 and closed it on August 16, 1988. NHTSA's investigations file lists the Chevrolet Astro and GMC Safari for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA87-009 (also written EA87009)
- Investigation type
- Engineering Analysis A more detailed stage of a defect investigation, opened when NHTSA's Office of Defects Investigation decides an issue merits further review, often after a Preliminary Evaluation or a Recall Query; it can include vehicle testing, surveys and further information requests.
- Status
- Closed August 16, 1988
- Opened
- Closed
- Vehicle or equipment manufacturer
- General Motors, LLC
- Component
- Service Brakes, Hydraulic
- Vehicles and equipment
- Chevrolet Astro and GMC Safari
A recall appears here only when NHTSA's investigations file links one to the investigation; NHTSA's summary or record can name others.
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Engineering Analysis EA87-009.
ANALYSIS: THE PROPOSED GM CHANGES SHOULD REDUCE THE FRONT-BIAS IN THEREAR BRAKE SYSTEM.HOWEVER THERE IS NO INDICATION THAT GM WILL RETROFITTHE 1985 AND 1986 MODEL YEAR VEHICLES.REPORTS INDICATE THAT THE PROBLEMMAY NOT LIE IN THE BRAKE BIASING SYSTEM, BUT RATHER IN MALFUNCTIONINGOR IMPROPERLY DESIGNED REAR BRAKE ADJUSTERS.STATUS: ANALYZING RESPONSE FROM GM DATED 5/12/87.
AWAITING REPLY FROM NHTSA'S LEGAL STAFF CONCERNING GM'S RESPONSE.TOLD TO SIT ON IT A WHILE BY MR. PARKER AT 8/20/87 BRIEFING.AFTER LEGAL'S REPLY, THE DATA WILL BE UPDATED AND AN ACTIONDECISION WILL BE FORWARDED FOR SUPERVISOR'S REVIEW.===
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA87-009. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. Model years with a try.vin recall page link to that page's NHTSA investigations section.
Chevrolet
All Chevrolet recallsGMC
All GMC recallsWhat an NHTSA investigation is
NHTSA's Office of Defects Investigation (ODI) looks into possible safety defects in vehicles and equipment, often after owner complaints. An investigation usually starts as a Preliminary Evaluation, or as a Recall Query when it concerns whether an existing recall covers the right vehicles or fixes the problem, and ODI can upgrade it to a more detailed Engineering Analysis. A Defect Petition asks NHTSA to open an investigation, and Audit and Equipment Queries are administrative investigations into whether companies complied with federal vehicle safety requirements, such as reporting, recall and certification rules.
An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.
To see whether a specific vehicle has an open recall, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for EA87-009
Investigation details come from NHTSA's investigations file, which try.vin imports once a day. The investigation types are described from the U.S. Department of Transportation Inspector General's May 2023 report on NHTSA's Office of Defects Investigation, NHTSA's petition rules (49 CFR Parts 552 and 557) and NHTSA's Office of Defects Investigation procedures. How try.vin reads NHTSA investigations.