dont know if you still having the problem? i have the same issue and took it to a ring and pinion shop. i found out that they call it the GM clunk..lol. all gm trucks/suvs will do it at one time. the little poly bushing between the leaf springs wear out and cause the springs to bind or stick due...
that is the going trend with the 99's i had the same issue and also found out that they eat caps/rotors and suck with the dampness. my brother, who is a mechanic,said he ran across it all the time and said to spray the cap and wires with silicone spray. it solved the dampness misfire. he...
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