What's wrong with it?

Asked by Amber Jun 18, 2023 at 06:13 AM about the 2005 GMC Sierra 1500 SLE 4WD Standard Cab SB

Question type: Maintenance & Repair

No idle, doesn't start without giving it gas,
wants to die all the time, backfires

4 Answers
155,195

james answered 10 months ago

Two things come to mind. An EGR (Exhaust Gas Recirculation) valve that's not closing properly can cause these symptoms. Or a bad Diverter Valve for the A.I.R. (Air Injection Reaction) system that's not working properly. Is your check engine or Service Engine Soon light on? If so, what codes do you have? Some auto parts stores can scan your computer for trouble codes and most will do it for free. I'd check the EGR valve first, then the Diverter Valve second. Hope that helps! Jim

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Bob_ answered 10 months ago

timing gear/belt is out of adjustment, would look to the tensioner bearing, for allowing too much play,,,that'd do it~

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38,905

beatupchevy answered 10 months ago

Also sounds like a bad IAC valve , your experience may differ

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