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Reply To: 2008 Silverado stalls when I hit the brakes

May 24, 2023 at 8:35 am #762403
GM Fan
Participant

Definitely sounds like a vacuum leak if it only happens when you hit the brakes. I would start by checking any hoses for cracks/leaks, if nothing then the IAC. I know the IAC is pretty common to go out especially at higher miles, if not that then maybe TPS? Does it idle high on cold startups or is it difficult to start when hot?

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