Avalanche 1500

Stalling or Low Engine Idle Speed Due to Dirty Throttle Body on Chevrolet Avalanche 1500

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.

Problem Data
RepairPal Verified
Average mileage: 129,090 (78,000–216,670)
5 model years affected: 2002, 2003, 2004, 2005, more2006
19 people reported this problem
Viewing 1 - 7 of 7 comments
Avalanche would start normally and run at low idle speed while engine was cold. After the engine warmed up, it would stall every time I took my foot off the accelerator. My mechanic, Gene, cleaned the throttle body and it's been running fine so far (two days, 50+ miles).