ABS and brake light on, 2000 Sierra

[Bruce496]

I have been reading a lot on this issue, my truck is a 2000 Sierra 1500.

Both lights would come on but would reset after I would cycle the ignition. Now they are on all the time. I just had a new brake boaster and master cylinder installed. I checked the grounds, they were ok, fuses are good. Is there are relay for the ABS system or just fuses? I had the truck scanned and they said the wheel sensors are ok it's something else? Is there a way to check the module? I don't want to spend the money on one if that's not the problem. 

Any help would be appreciated

Thank you

[Badbird2000]

V Vv

Sent from my SM-N960U using Tapatalk

[tlaw91]

Needs module rebuilt. It’s around $150 to get it done. No other way to fix ur issue.


Sent from my iPhone using Tapatalk

[Bruce496]

Is there any way to check the module?

 

Thank you

[tlaw91]

It needs rebuilding there’s no checking anything. Remove. Send out to be rebuilt. Reinstall. Sorry that’s the way those are


Sent from my iPhone using Tapatalk

[carnau]

5 hours ago, Bruce496 said:

Is there any way to check the module?

 

Thank you

Do you know what the code is? If the module is setting the relay code, (where people talk about getting them rebuilt) this is all they are doing. The soldering joints are coming loose.

Follow this video.

 

[Bruce496]

The mechanic told me the wheel sensors are making connection, and it's showing its something else they need to dig into deeper. 

Thank you

[davester]

what are the specific abs codes being generated?

and what do you mean by "I checked the grounds"?

[Bruce496]

He didn't give me any codes.

[Bruce496]

Here's an update.

I'm not sure what happened, but both lights are off this morning.

The only other things that I did, since I kept hearing that it could have something to do with the master cylinder not being bleed right, was, check the sensor on the M/C and that was ok and I noticed the brake fluid was filled way above the mark, so I removed some fluid.

Today I leave for work and both lights are out?

I just don't know?

Thanks

[tlaw91]

It’ll come back.
Then you’ll need to rebuild ur module.


Sent from my iPhone using Tapatalk

[Joseph Billeter]

Did the brake feel spongy at all? Like right after they put in the brake booster/master cylinder? 

[Bruce496]

No the brakes felt fine.

 

Thank you