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GMC Sierra Denali Problems

Stalling or Low Engine Idle Speed Due to Dirty Throttle Body on GMC Sierra Denali

Problem Description and Possible Solution

A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern.

(10 people reported this problem)

GMC Sierra Denali Vehicles With This Problem

RepairPal Verified
Average mileage: 141,500 (108,000–175,000)
7 model years affected: 2002, 2003, 2004, 2005, more2006, 2007, 2010
Not Your GMC Sierra Denali Problem?
Brake problem? Or maybe a faulty head gasket cylinder?
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