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GMC 1995 Vandura 2500 HELP!!!!!

 
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Jim U via CarKB.com

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Since: Aug 13, 2005
Posts: 2



(Msg. 1) Posted: Sat Aug 13, 2005 9:55 pm
Post subject: GMC 1995 Vandura 2500 HELP!!!!!
Archived from groups: alt>autos>gm (more info?)

Replaced break system 3x's, from master cylinder, power booster down. Front
breaks lock after 10 miles of driving, I have to wait for them to cool down
before I can drive it. Again only 10 miles. Can not figure this out.
Has a diesel break system, but runs on gas???!!!

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Jim U via CarKB.com

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Since: Aug 13, 2005
Posts: 2



(Msg. 2) Posted: Sat Aug 13, 2005 10:55 pm
Post subject: Re: GMC 1995 Vandura 2500 HELP!!!!! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Hi Shep
It is both. We changed both hoses. I had a leak in my power stearing, it
is part of the power booster. I have had break trouble ever since.

Shep wrote:
>Is it both front wheels locking, if only one suspect bad hose at the
>caliper. When this happens try cracking the line into the hydro boost if the
>brakes free up that is the problem, did this happen before all the work was
>done?
>> Replaced break system 3x's, from master cylinder, power booster down.
>> Front
>> breaks lock after 10 miles of driving, I have to wait for them to cool
>> down
>> before I can drive it. Again only 10 miles. Can not figure this out.
>> Has a diesel break system, but runs on gas???!!!

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SnoMan




Joined: May 17, 2005
Posts: 1396



(Msg. 3) Posted: Sun Aug 14, 2005 1:02 pm
Post subject: Re: GMC 1995 Vandura 2500 HELP!!!!! [Login to view extended thread Info.]

Jim U via CarKB.com wrote:
Replaced break system 3x's, from master cylinder, power booster down. Front
breaks lock after 10 miles of driving, I have to wait for them to cool down
before I can drive it. Again only 10 miles. Can not figure this out.
Has a diesel break system, but runs on gas???!!!


You could have bad calipers that a swelling up when they get warm and sticking. Replace the calipers.
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hairy1

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Since: Dec 03, 2004
Posts: 129



(Msg. 4) Posted: Sun Aug 14, 2005 9:18 pm
Post subject: Re: GMC 1995 Vandura 2500 HELP!!!!! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

"Jim U via CarKB.com" wrote in message

> Replaced break system 3x's, from master cylinder, power booster down.
Front
> breaks lock after 10 miles of driving, I have to wait for them to cool
down
> before I can drive it. Again only 10 miles. Can not figure this out.
> Has a diesel break system, but runs on gas???!!!

Does your brake pedal return all the way? Is the spring hooked up? There
MUST be a small amount of freeplay between the pedal pushrod and the master
cyl. or what you describe will happen.

Dave
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Wendy John1

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Since: Aug 01, 2004
Posts: 3



(Msg. 5) Posted: Mon Aug 15, 2005 7:55 am
Post subject: Re: GMC 1995 Vandura 2500 HELP!!!!! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

"Jim U via CarKB.com" wrote:

The brakes work fine for about 10-12 miles then lock up.
When they cool down I can drive again till they heat up.
The shop working on the van is stumped???!!!
______________________________________________

Some rear brake lines have a residual pressure valve.
If the front and rear lines were interchanged, front
brakes would not fully release.

Wendy & John.
______________________________________________
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Roy5

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Since: Mar 23, 2004
Posts: 1190



(Msg. 6) Posted: Mon Aug 15, 2005 12:39 pm
Post subject: Re: GMC 1995 Vandura 2500 HELP!!!!! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

"Jim U via CarKB.com" wrote in message

> The breaks work fine for about 10-12 miles then they lock up. When they
> cool
> down I can drive again till they heat up. The shop working on ththe van is
> stumped???!!!

Getting in a little late. Has anybody suggested the proportioning valve?

Roy
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KjunRaven

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Since: Aug 20, 2005
Posts: 80



(Msg. 7) Posted: Sat Aug 27, 2005 12:55 pm
Post subject: Re: GMC 1995 Vandura 2500 HELP!!!!! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

"Jim U via CarKB.com" wrote in


> I tooke the van to GMC it was the rod from the master. it was to long.
> Bill replaces the master 3x's.
> As you can tell I know nothing about breaks, however Bill said he did.
> GMC fixed the problem.
>
> Thanks to eveyone that helped.
>
> Hairy wrote:
>>> Replaced break system 3x's, from master cylinder, power booster
>>> down. Front breaks lock after 10 miles of driving, I have to wait
>>> for them to cool down before I can drive it. Again only 10 miles.
>>> Can not figure this out. Has a diesel break system, but runs on
>>> gas???!!!
>>
>>Does your brake pedal return all the way? Is the spring hooked up?
>>There MUST be a small amount of freeplay between the pedal pushrod and
>>the master cyl. or what you describe will happen.
>>
>>Dave
>
>

curiosity?? 'Has a diesel break system'........does that refer to 1) belt
driven vac. pump. 2) hydro boost power brake booster....just
curious............kjun
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