ABS pump vibrating when car is off?
Thread Starter
Teching In
Joined: Jun 2016
Posts: 15
Likes: 0
From: Arizona
ABS pump vibrating when car is off? Something weird happened. So I went to get food. Turned the car off and went inside, when I came back around ten minutes later something was vibrating in the engine bay and it was noticeably loud. The car was completely turned off so idk what it was doing but I opened the hood and the abs pump was vibrating a lot? I put my hand on the abs pump and confirmed that that is what was vibrating. I usually have all the brake lights on, but now I just have the abs inop and asr off lights? Not sure why the pump was vibrating. Could it be a sign of the pump going out?
10 Second Club
Joined: Jul 2008
Posts: 224
Likes: 0
From: Columbus Ohio
I've seen that happen to Silverados quite a bit (obviously I work on a lot more trucks then fbodies), they short out and run all the time. Typically they come in with a dead battery. Most of them have leaked brake fluid into the ABS module that is attached to it, ruining both components. You may want to do something other then just unplugging it, at least unbolt the ABS module and make sure it's not full of brake fluid.
Thread Starter
Teching In
Joined: Jun 2016
Posts: 15
Likes: 0
From: Arizona
I've seen that happen to Silverados quite a bit (obviously I work on a lot more trucks then fbodies), they short out and run all the time. Typically they come in with a dead battery. Most of them have leaked brake fluid into the ABS module that is attached to it, ruining both components. You may want to do something other then just unplugging it, at least unbolt the ABS module and make sure it's not full of brake fluid.
Thread Starter
Teching In
Joined: Jun 2016
Posts: 15
Likes: 0
From: Arizona
took the module off and no fluid was in it. I swapped the module with another one I had laying around and the lights haven't came back yet. Not getting my hopes too high because usually under hard acceleration the lights all pop back on but I will see if this fixes the issue finally!
