# 2004 CHEVROLET W-SERIES — SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
> NHTSA complaint `531526` · 2005-04-20 · General Motors, LLC
## Severity
- **Deaths:** 0
- **Injured:** 0
- **Fire:** No
- **Crash:** Yes
- **Police report:** No
- **Medical attention:** No
- **Vehicle towed:** No
## Vehicle
- **Make:** CHEVROLET
- **Model:** W-SERIES
- **Year:** 2004
- **Manufacturer:** General Motors, LLC
- **Component:** SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
- **Miles at failure:** 62,976
- **Speed:** 10 mph
## Narrative
VEHICLE WAS BEING USE OFF THE ROAD CLIMBING A STEEP BANK.  WHEN IT BROKE TRACTION THE DRIVER APPLIED BRAKES AND THE PEDAL WENT TO THE BOTTOM AND WITH NO BRAKING EFFECT.  IT HIT A TRUCK FOLLOWING IT DAMAGING THE REAR OF THE TRUCK.  THE TRUCK WAS TAKEN TO THE CHEVROLET SERVICE DEPT AND DEEMED TO BE NORMAL.   WE TESTED THE TRUCK ON A SIMILAR BANK AND FOUND THE BRAKES FAILED AGAIN UNDER SIMILAR CIRCUMSTANCES.  WE THEN TRIED FIVE OTHER CHEVYS (2003 &2004 MODELS) AND FOUND THE SAME BRAKE FAILURE IN ALL FIVE EVERY TIME TRACTION WAS BROKEN.  WE HAD REPRESENTATIVES FROM CHEVROLET WITNESS OUR TEST AND ACKNOWLEDGE THERE IS A PROBLEM BUT THEIR TECHNICAL ASSISTANCE SAID THE BRAKES ARE NORMAL.  WE CALLED CUSTOMER ASSISTANCE AND DIDN'T GET A DIRECTION FROM THEM.  WE ARE WRITING CHEVROLET/GM,  BUT DON'T KNOW WHERE OR WHO TO SEND THE COMPLAINT TO. SO FAR WE HAVE HAD NO RESULTS TO CORRECT THIS PROBLEM.
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*Source: [NHTSA ODI](https://www-odi.nhtsa.dot.gov/downloads/) · AI Analytics · CC0 1.0*