General Maintenance & Repairs - ABS Inop/ASR/Brake lights all on.. WTH?
12-02-2006, 05:40 PM
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.
12-02-2006, 07:40 PM
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.
12-02-2006, 11:13 PM
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?
12-26-2006, 12:07 PM
Here's a ABS wiring diagram I found from shoebox's website:
12-27-2006, 01:08 PM
Three most common problems, in order:
1. Bad wheel speed sensor
2. Bad harness/wire/connector to sensor
3. Bad ABS module
12-27-2006, 05:39 PM
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
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