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From: churm@ihuxf.UUCP (b.r. churm)
Newsgroups: net.auto
Subject: GM BRAKING PROBLEMS
Message-ID: <2688@ihuxf.UUCP>
Date: Tue, 3-Sep-85 12:26:47 EDT
Article-I.D.: ihuxf.2688
Posted: Tue Sep  3 12:26:47 1985
Date-Received: Thu, 5-Sep-85 08:12:20 EDT
Distribution: net
Organization: AT&T Bell Laboratories
Lines: 33



We have been having a discussion here at my office concerning
a problem that some of us are having in the GM A-frame cars.
If there is any one out in the net that has had this problem
or knows what this is, we would appreciate your comments.

Currently there are two cars involved. Both 1982 GM A-frame issues.
One is a Buick Century the other a Pontiac 6000. Both have about
30K miles on them, give or take a few thousand. 

The problem is intermittent and occurs while braking. It occurs
under all types of braking conditions. What happens is that
when the brakes are applied a thunk, thunk sound occurs from the
back of the car. It sounds somewhat like the sound you have when you 
get a flat tire. The brakes have been checked and are OK, (ie. not
enough wear to justify replacement). We are dumbfounded as to
what this is and how to repair it; outside of totally overhauling
the rear braking system with no guarantee of correction.

Has anybody else with the GM A-frame model had this problem? 
Did you get it fixed and if so what was fixed? Any comments
or suggestions on how to deal with the problem would be
most appreciated since both cars are out of the warranty period
and we would like to avoid any unnecessary expensive repairs.



Thanx in advance.

			Brian Churm
			ihnp4!ihuxf!churm
			AT&T Network Systems