Sup guys/gals..my friend has a 01 Tahoe and when the truck comes to a stop and is idling, the truck starts surging and acting like its going to die. My first thought was tps but I thought I'd post on here and get some ideas from people who actually own these vehicles. Thanks for any input!

 

what mods are done to it,

vacuum leaks?

 

No mods, it's bone stock.

 

It could be a vacuum leak but, I believe it's the IAC(Idle Air Control) valve. They get carboned-up/sticky and let too much air in at idle rpms. I d/k about your specific one but all EFI vehicles have them and your problem is common. Usually, you can just remove it and soak /flush it with a solvent and it will be OK. If cleaning it doesn't help or last, replace it.

Dan

 

Do 01's have egr??? if they do, when I shaved the egr tube on my 00 the O gasket din't sit right and it idled like $hi+... Maybe sum how that gasket moved and isn't sittin right, once I was moving my truck would accelerate by it's self fixed the O gasket on the egr problem solved... Good luck

 

My Tahoe did the samething cleaning the throttlebody cured the problem.