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GMC 3500 Pickup Problems

Deposit Buildup on Throttle Body May Cause Low Engine Idle on GMC 3500 Pickup

Problem Description and Possible Solution

The engine idle may be lower than normal due to deposits built up on the throttle body, which can restrict air flow at idle. To low of an engine idle can result in a stalling condition. Performing a throttle body service will generally correct this concern.

(6 people reported this problem)

GMC 3500 Pickup Vehicles With This Problem

RepairPal Verified
Average mileage: 88,600 (88,600–88,600)
Engines affected: 5.7L V8, 7.4L V8
5 model years affected: 1996, 1997, 1998, 1999, more2000
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Brake problem? Or maybe a faulty head gasket cylinder?
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