1993 GMC Sierra service brakes, hydraulic problems
11 owner complaints filed with NHTSA name the service brakes, hydraulic on the 1993 GMC Sierra — 15% of all complaints for this model year.
What owners report
“#1 transmission. Slips out of gear into nuetral while driving at highway speeds. Must coast over to side of road, turn off engine, wait, restart and continue on. Narrowly caused a collision with a semi truck while coasting to side of road. Complained to dealer numerous times, said they could not…”
filed Apr 22, 2004
“1) dash brake light constantly on or flashing, code = shorted abs defective? 2) 4wd transaxle- shifter fork and thrust bearings broken. No forward or reverse on highway-very dangerous breakdown 3) ecm electronic control module failure, preventing the 3-4 overdrive shift in the transmission-very…”
filed Jun 18, 2001
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes, Hydraulic problems in other Sierra years
| Year | Reports | Share |
|---|---|---|
| 2017 Sierra | 1 | 2% |
| 2015 Sierra | 1 | 2% |
| 2012 Sierra | 1 | 3% |
| 2011 Sierra | 1 | 2% |
| 2010 Sierra | 1 | 3% |
| 2009 Sierra | 1 | 3% |
| 2008 Sierra | 1 | 1% |
| 2007 Sierra | 2 | 3% |
| 2006 Sierra | 7 | 13% |
| 2005 Sierra | 10 | 9% |
| 2004 Sierra | 28 | 15% |
| 2003 Sierra | 38 | 18% |
Other reported problem areas on the 1993 GMC Sierra
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.