Having problems with your GMC Sierra 1500 ?

Why does my transmission in my 1994 GMC Sierra make a loud "clunk" sound when shifting in to drive? also the service engine light is on

Posted / edited by AnonymousUser on : 17-01-2022

Answers :

Service engine light could be something else altogether...I'd have it checked at your nearest Auto Zone or parts store. Most times they will do this free.
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\015\012Now for the "clunk"...I'd suspect "U-Joints" in the drive shaft are going out.
\015\012An easy test is to drive and look at mirror mounted on the front window area.
\015\012Does the reflection have a vibration in it ? Does it "clunk" when placed in reverse as well ?
\015\012U-Joints are an easy fix...and given the model of truck I'd suspect a "U-Joint Clunk"...
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\015\012Hope this helps...
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