Drums Grabbing

Tiny
DAVIDDILLMANJR
  • 1997 CHEVROLET TRUCK
  • V8
  • 2WD
  • AUTOMATIC
  • 60,000 MILES

When I use the brakes on my 1997 Chevrolet C2500 350ci 8600gvw truck the rear drums lock up on the truck. Now I have new shoes new springs in the rear as well. Everything is textbook but for some reason the drums are still grabbing and I cannot figure it out. At low speeds stopping the tires will lock up and the drums scream when breaking in my neighborhood. I just replaced both slave cylinders. I drove around for about a week and the breaking was perfect and then it slowly started grabbing again and now they are back to full on grabbing. I am very mechanically minded and can fix just about anything on a truck but this issue has me at a COMPLETE LOSS. Please help

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Tuesday, May 10th, 2011 AT 7:52 PM

5 Replies

Tiny
FIXITMR
  • MEMBER

Maybe a proportioning valve problem?

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Tuesday, May 10th, 2011 AT 7:54 PM
Tiny
DAVIDDILLMANJR
  • MEMBER

I have thought of that but what specifically should I be looking for to see if the proportioning valve is the part that is bad?

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Tuesday, May 10th, 2011 AT 7:55 PM
Tiny
FIXITMR
  • MEMBER

Does that have antilock brakes?

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Tuesday, May 10th, 2011 AT 10:48 PM
Tiny
DAVIDDILLMANJR
  • MEMBER

It does have ABS

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Wednesday, May 11th, 2011 AT 4:13 PM
Tiny
FIXITMR
  • MEMBER

Does it have individual rear wheel sensors? 1 on each rear wheel?

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Thursday, May 12th, 2011 AT 6:06 AM

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