1994 Chevy Blazer my blazer shakes when going 30 mph

1994 CHEVROLET BLAZER
210,000 MILES • 6 CYL • 4WD • AUTOMATIC
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BLACKNUM3
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it vibrates when up to 30 mph when i hit 50 or 60 it smoothes out also my heater stops perodically it wont work on high dont know if these are connected if it was stuck in 4 wheel drive would it vibrate at 30 mph [img:0a21456cbb]http://www.2carpros.com/forum/automotive_pictures/457011_4x4_011_1.jpg[/img:0a21456cbb]
Jan 2, 2010 at 9:20 AM
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BIGJIM79
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  • 239 POSTS
sounds like u-joint or a bad tire
Jan 3, 2010 at 11:17 PM