Question about 1990 GMC Rally
When you say you checked the rear end for problems and things appeared good did you check the rear end internally to see if there is a broken gear tooth or metal in the differential oil.i`ve one were this was the problem(a broken gear) that would get caught and stop the forward motion or make it hard to turn.i`ve also had it were the rear brakes were causing a forward motion problem like your having.the shoes were rotating so far when the drum was turning then apply and lock up until it was put in reverse.just some things to check out.if things were working good with the rear drive shaft removed and the problem starts with it in then the problem is in the back end some where as mentioned above.
Posted on May 25, 2011
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Posted on Jan 02, 2017
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