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2005 gmc envoy_denali
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9 Posts
Discussion Starter · #1 ·
Twice in the last week when my wife started our 2005 Denali the reduced engine power light came on along with the ses light. Took to autozone this morning and the code was p2176. I have also been having problems with the ignition but hadn't yet ruled out the starter solenoid. Any ideas? Thanks in advance.
 

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2002 gmc envoy_slt
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18 Posts
Not much of a car expert, but I had the same issue a few months back. Turned out that I needed a new throttle. I guess inside the throttle is a plastic wheel with teeth on it. The teeth were stripped, therefore not allowing the throttle to "flap".
 

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2002 chevy trailblazer_ltz
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21 Posts
question to this

Did your idle seem ok at times and then would get a slight vibration? I also notice at times when going about 75 it feels like there is some sort of vibration but not a suspension issue. I have been trying to figure that out.
 
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