Good afternoon,
I have a 1984 GMC High Sierra 4x4 with a bad vibration. I have been doing all the work on this truck since getting it last year and I am finally stumped. It gets really bad around 50+ mph. It is so bad that it is hard to tell where it is coming from. Here are some things that have been done but did not fix the problem (Although they all needed to be done).
New schocks
New brakes
New rear driveshaft U joints (one was bad)
New tires (hung and balanced by professionals)
fluid change in rear end.
None of these have had any effect on the vibration. Does anyone have some suggestions on what else to check. Like i said its so rough it is hard to tell if it is coming from the front or rear.. I can feel it in the steering wheel, but then again you can touch any part of the truck and feel it. Thanks for your help,
Michael
I have a 1984 GMC High Sierra 4x4 with a bad vibration. I have been doing all the work on this truck since getting it last year and I am finally stumped. It gets really bad around 50+ mph. It is so bad that it is hard to tell where it is coming from. Here are some things that have been done but did not fix the problem (Although they all needed to be done).
New schocks
New brakes
New rear driveshaft U joints (one was bad)
New tires (hung and balanced by professionals)
fluid change in rear end.
None of these have had any effect on the vibration. Does anyone have some suggestions on what else to check. Like i said its so rough it is hard to tell if it is coming from the front or rear.. I can feel it in the steering wheel, but then again you can touch any part of the truck and feel it. Thanks for your help,
Michael