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  1. Idaho83815

    '93 K3500, 454 TBI, poor drivability

    Hello, newby and looking for advice. Thanks in advance. 1993 GMC K3500, 7.4, TBI, 156k miles, 4L80E Auto Trans (Jasper Reman tranny installed 2 years ago) I have owned it 6 years and it goes to the dump and plows snow in and out of our property in the winter. Always had a high idle (1000-1200)...
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