NHTSA safety investigation
NHTSA Investigation EA04012
Engineering Analysis · General Motors, LLC · SERVICE BRAKES, HYDRAULIC:POWER ASSIST
An investigation is not a finding that a defect exists.
NHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
What NHTSA is examining
The agency's own description of the inquiry, quoted as published
HYDRAULIC PUMP FAILRES
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
An investigation is a separate record from a recall and from a manufacturer communication. A manufacturer campaign to repair a safety defect or a failure to meet a federal safety standard.
Investigation details
Identifiers, dates and outcome as recorded by NHTSA
- Action number
- EA04012
- Investigation type
- Engineering Analysis (EA)
- Status
- Closed
- Manufacturer
- General Motors, LLC
- Component
- SERVICE BRAKES, HYDRAULIC:POWER ASSIST
- Opened
- Apr 30, 2004
- Closed
- Feb 28, 2005
- Associated recall campaign
- 05V005000
Vehicles named in this investigation
91 model years across 30 models
- Chevrolet Avalanche
- Chevrolet C Pickup
- Chevrolet C Series
- Chevrolet C Series (medium)
- Chevrolet C/K Chassis Cab
- Chevrolet C/K Pickups
- Chevrolet C/K Series
- Chevrolet C/K Utility
- Chevrolet Chevrolet Truck
- Chevrolet Chevy Van
- Chevrolet Express
- Chevrolet G Series
- Chevrolet G Van
- Chevrolet G25
- Chevrolet G35
- Chevrolet Gmt 800
- Chevrolet K Pickup
- Chevrolet K Series
- Chevrolet Pickup
- Chevrolet Sierra
- Chevrolet Silverado
- Chevrolet Silverado 2500
- Chevrolet Silverado 2500 Hd
- Chevrolet Silverado 3500
- Chevrolet Silverado 3500 Hd
- Chevrolet Suburban
- Chevrolet Van
- Chevrolet Yukon
- Chevrolet Yukon Xl
- GMC Savana
Being named here means NHTSA included the vehicle in the scope of its inquiry. It is not a statement that these vehicles have a defect.