urbanhunter44

iTrader: (1)

Every couple of starts I'll start the car and the ABS Inop, ASR (trac control) and Brake lights come on. It also feels like it jerks a bit when I come to a stop and it feels almost like a miss when I accelerate. Also, my temp gauge twitches a bit when the dash lights are on. Very very odd.

Wondering if anyone else has ever dealt with this? I searched and didn't find anything concrete.

keliente

iTrader: (22)

I don't think the temp gauges are related, but the ABS inop/trac control/brake lights are all on one system. Make sure that the brake master cylinder is full, none of the speed sensor wires are broken/chaffed, nothing is out of place.

urbanhunter44

iTrader: (1)

I pulled my codes and every ABS code was set, so I'm figuring there has to be something unplugged somewhere.

The miss turned out to be cyl 1 is misfiring at idle. I've burned plug wires before on my LTs, I'm sure that's what this is.

Anyone have an ABS wiring diagram?

rbrcka

Here's a ABS wiring diagram I found from shoebox's website:

http://shbox.com/1/ABS_schematic.jpg

jmilz28

iTrader: (13)

Three most common problems, in order:
1. Bad wheel speed sensor
2. Bad harness/wire/connector to sensor
3. Bad ABS module

ksuburban

normaly when all codes are set it means the module is bad. You might try cleaning the abs module conector, they sometimes get corrosion on them