GMT 800 Parking Brake Adjustment

dplarson · February 19, 2013

Does anyone have a procedure to adjust the parking brake on a GMT 800 1500? Disc hat (drum) looks good, pads are not really very worn, applying brake fully still holds the Suburban but the pedal has been going farther and farther down and it now goes all the way to the floor so I suspect that soon it will not hold the vehicle anymore. Is there an adjustment procedure for these?

bossier62guy · February 19, 2013

Here it is for an 02.....not sure what vehicle you have but it may not be exactly the same.

park brake adj.pdf

Mckenzie · February 19, 2013

Lucky!! I don't have a parking break, mine hasn't been working since forever!

dplarson · February 21, 2013

Drives:'06 Suburban 1500 LTZ 6.0 3.73

Thanks for the PDF. I'll check it out. And yes, I had one of those in a previous vehicle, a parking brake that never worked that is. I'd like to keep this one alive if possible.

Chris · February 21, 2013

Rare burb

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dplarson · May 4, 2013

Well it became time to do rear pads so while doing that job I took the rear rotors off and inspected the parking brake components. Everything looked good so here is what I did to successfully adjust the parking brake.

Remove rear rotor, find the star to adjust the shoes, figure out which way makes it expand the shoes apart and turn a few times until the rotor is hard to get reinstalled, remove the rotor, turn the adjuster the other way in small increments. When replacing the rotor, rotate it back and fort a bit and listen. When you can just turn the rotor without hearing rubbing, maybe loosen the adjuster just a touch more and reinstall the rotor.

This is what I did on both sides and now the parking brake travel is much less. I'm very pleased that I took the time to do this. I did not use and special tools or measure any clearances.

gmtech4 · May 4, 2013

whats a GMT 800 mean ???

dplarson · May 5, 2013

whats a GMT 800 mean ???

You know how a '99 GM full size truck or Suburban looks totally different than a '06 which is again different from a '07?

See this article. Especially in forums that cover multiple series in a single forum, the GMT series can be important.

http://en.m.wikipedia.org/wiki/GM_GMT_platform

gmtech4 · May 5, 2013

no one uses that term for a truck at the dealers ,,,,,no one except here ,,,,,sigh ......

fail of the epic kind lol

bossier62guy · May 6, 2013

I personally don't see the problem.....they are indeed GMT800 series trucks. You must be extremely bored to respond to a thread specifically because you don't like the terminology. Now put the keyboard down Rob and go drink yourself into a bloody stupor.

txab · May 6, 2013

no one uses that term for a truck at the dealers ,,,,,no one except here ,,,,,sigh ......

fail of the epic kind lol

It's better than using OBS, NBS, NNBS, NNNNNNNNNNBBBBBSSSSSS like they use on other forums. I see 400, 800 or 900, I instantly know what body and years they are speaking of