Service Brakes Soon, Parking Brake Light Staying on?

ROBBART GOSNELL

MEMBER
2004 GMC ENVOY
4.2L
6 CYL
2WD
AUTOMATIC
118,663 MILES

The SUV has had all the brake pads and front calipers changed in the last 3 months. The driver uses the parking brake every time he parks. I have filled the brake fluid reservoir to the max line. I have pulled and reset the brake fuse (33). I have cleaned the ground terminal under the driver's side door per service bulletin for ground #110. When driven, the truck does not feel like it is dragging, rubbing, grinding, scraping, ect. No unusual noises. Is there another ground I should have cleaned. How can I diagnose the ABS Control Module / EBCM? Can't afford to take it to a mechanic right now. Any help would be appreciated.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

No problem, this sounds like a front or rear ABS wheel speed sensor is not working. here is a guide to help you retrieve the codes so we can see which sensor is it. The scanners are cheap on amazon.

https://www.2carpros.com/articles/anti-lock-system-testing-and-repair-abs

This guide can help as well:

https://www.2carpros.com/articles/brake-system-warning-light-on

Here is how to change the sensors in case you need them. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.

Images (Click to make bigger)