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Speed

Tiny
JEFFROHOTROD1985
  • MEMBER
  • 2004 BUICK RENDEZVOUS
  • 3.4L
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 190,000 MILES
The abs and AWD disabled light is on. It is showing a code c0045 for left rear wheel speed sensor. The shop that first looked at it said abs module and replaced it and said that is now good but still the same problems so they said PCM or BCM. Had them both replaces and nothing changed. I have replaced the hub assembly and have started replacing the wiring one section at a time but seems like nothing is helping. Does anybody have any suggestions what to check?
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Tuesday, September 12th, 2017 AT 12:39 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
It is very common for the wiring before the sensor to brake internally from flexing. They sell a replacement pigtail that splices up near the radiator support.
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Friday, March 19th, 2021 AT 10:30 AM
Tiny
JEFFROHOTROD1985
  • MEMBER
  • 12 POSTS
Mine is the rear sensor though. Would the wiring for it run that far up. The wiring from the rear sensors run to a harness that is in the floor pan behind the drivers seat.
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Friday, March 19th, 2021 AT 10:30 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
I missed that part. I was referring to the front ones. You are going to have to test the sensor this guide can help.

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

Please run down this guide and report back.
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Friday, March 19th, 2021 AT 10:30 AM

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