1986 GMC Jimmy vibration

1986 GMC JIMMY
148,000 MILES • V8 • 4WD • AUTOMATIC
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EXCALIBUR
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after starting my truck, and putting it into drive, there is














































































































































































































































































































































































































































































when I put my truck into gear and start moving . an overall vibration starts that pretty much vibrates the whole truck. It doesn't feel like a front end out-of-alignment vibration..and it continues when i put it in neutral, and continue moving...its almost like when you go over a road that has grooves cut into it...don't know if that makes sense
Jan 15, 2008 at 2:05 PM
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2CARPRO JACK
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Check your u-joints. Might have one frozen up causing the bind. Does the vibration change at all with engine rpm?
Jan 15, 2008 at 5:23 PM
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EXCALIBUR
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In answer to your question, there is no difference when I put the truck , while in motion, in neutral, and rev the engine....
Jan 16, 2008 at 6:55 AM
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2CARPRO JACK
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Check th eu-joints and have you had the front end inspected?
Jan 16, 2008 at 7:21 AM