Deposit Buildup on Throttle Body May Cause Low Engine Idle on GMC V3500

Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Problem overview

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

1 comment

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GMC V3500 vehicles with this problem

5 model years affected

Average mileage: 88,600 miles

(88,600 - 88,600)

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