Stalling or Low Engine Idle Speed Due to Dirty Throttle Body on GMC Yukon 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.

Problem Data
RepairPal Verified
Average mileage: 117,916 (60,000–220,000)
8 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007, 2011
13 people reported this problem
Viewing 1 - 4 of 4 comments
Erratic Idle and stalling. Cleaned throttle body and fixed the problem.
Check engine light came on then I noticed low idle then my traction control disabled came on then a message saying reduced engine power came across I turned it off then started it and it was fine then the next day as soon as i turned it on it popped up i shut the vehicle off then turned on then ran fine untill I slowed down then it stalled and now everytime I start it the message pops up and won't go over 20 mph please help i changed the throttle body sensor it ran perfect for hours then did it again
Tractoin and check engine illuminate and the car speed and power goes down. I try to disconnect battery and both light went off, unfortunately it comes back later.