Question about GMC Sierra 2500HD
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Posted on Jan 02, 2017
I had a bad air conditioner compressor that caused this same problem. It had almost completley seized and gave the car some real trouble starting. The burning smell I had was caused from the belt rubbing around the seized pully.
Posted on Feb 11, 2009
Clean your Throttle body and pay attention to the Idle Air Control (IAC) valve passageway to try to clean the IAC. A dirty or faulty IAC will cause your engine to stall at idle, the job of the IAC is to open the passage way through the throttle body to regulate the amount of air to enter the engine to keep it from stalling when the Envoy is at idle.
Start with the simple and clean the throttle body and inspect any loose or damaged wire leads to the throttle body. Replace or repair any signs of damage.
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Posted on Apr 13, 2010
I see this a lot on the 03-06 Envoy instrument clusters, it's caused by failing stepper motors on the cluster's circuit board. It can be fixed though, check out this page about how to get it fixed - Envoy tachometer not working
Posted on Sep 30, 2010
Cleaning the throttle body is certainly the right thing to try first. Make sure you clean the throttle plate as well.
Posted on Nov 29, 2010
Testimonial: "Thanks. It seems to have worked."
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