ABS light on

Tiny
CORTRELL
  • MEMBER
  • 1994 CHEVROLET VAN
  • V8
  • 2WD
  • AUTOMATIC
  • 147,000 MILES
Abs light is on and speed odometer will not move and trans want shift correctly. Had it fixed 2 years ago and the mechanic said that a wire grounded out. It just happened again I would love to know what wire he was referring to?
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Saturday, December 11th, 2010 AT 3:59 PM

3 Replies

Tiny
HMAC300
  • EXPERT
Have this scanned for codes to narrow down the search.If no speedo or trans shifting it will most likely be the vehicle speed sensor.

Heres a guide to read, it will help

https://www.2carpros.com/articles/abs-warning-light-on-easy-repair-guide
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Saturday, December 11th, 2010 AT 4:32 PM
Tiny
CTRLX
  • MEMBER
  • 1995 CHEVROLET VAN
ABS light stays on, Speedometer does not function, will not shift out of first. The Speed Sensor has been replaced, VSS buffer has been tested good, instrument cluster has been tested good. All wiring seems good.
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Thursday, May 9th, 2019 AT 5:29 PM (Merged)
Tiny
MERLIN2021
  • EXPERT
The speed is the only section of the cluster that doesn't work? This is the procedure to test it.
Speedometer Inoperative 1. Unplug Vehicle Speed Sensor (VSS) buffer. On Commercial Van, VSS buffer is located on shipping panel, to left of steering column. On Van, VSS buffer is located on parking brake bracket. Turn ignition on. Check for battery voltage between Pink/Black or Pink/White wire and ground. If battery voltage does not exist, check for open or short in Pink/Black wire or Pink/White wire. 2. If battery voltage exists, check for voltage between Pink/Black or Pink/White and Black/White or Black wires. If battery voltage does not exist, check for open or short in Black/White or Black wire. If voltage is okay, raise and support vehicle. Leave VSS buffer unconnected. Start engine. Shift transmission into gear. 3. Check for AC voltage that varies with engine RPM between Purple/White and Light Green/Black wires of VSS buffer connector. If AC voltage does not exist, check for open in Purple/White or Light Green/Black wires. If wires are okay, replace vehicle speed sensor. If AC voltage exists, go to next step. 4. Check for AC voltage that varies with engine RPM between Light Green/Black and White wires. If voltage does not exist, replace vehicle speed buffer. If voltage exists, go to next step. 5. Turn ignition off. Reconnect VSS. Start engine. Put transmission into gear. Backprobe VSS connector. Check for AC voltage that varies with engine RPM between Yellow and Black/White wires. If voltage changes with RPM, replace VSS buffer.
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Thursday, May 9th, 2019 AT 5:29 PM (Merged)

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