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reduced engine power check engine light

08 5.3 silverado 4x4 36K miles

reduced engine power check engine light

Postby gfisher [OP] » Oct 05 2012, 12:31pm

Driving at 40-45 mph reduced engine power on dic stopped vehicle cycled key 3 times reduced engine power cleared check engine light still on any thoughts thanks
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Re: reduced engine power check engine light

Postby dalejrfan88 » Oct 05 2012, 3:44pm

Is your truck an Oil burner? Alot of the 07 and 08 with the 5.3 AFM have misfires and the spark plugs get fouled from oil getting into them. Also the rings/pistons get caked with carbon and cause this. It also sounds like it could be a throttle body.
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Re: reduced engine power check engine light

Postby gfisher [OP] » Oct 23 2012, 5:39pm

the code was for tps on gas pedal, cleared code ok for now
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Re: reduced engine power check engine light

Postby ASTE25 » Oct 23 2012, 7:14pm

It will probabaly be a problem with/in the throttle body. It could just be a dirty throttle body, or it may need replaced.
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Re: reduced engine power check engine light

Postby cruisin_n_style » Oct 24 2012, 7:57am

Take it to a dealer, it will be fixed free of charge if: (less than 120,000 miles on the truck and the truck isn't more than 10 years old). They just put out some letters regarding this malfunction. Throttle Position Sensor causes the engine to run rough and malfunction indicator lamp and/or engine reduced power messages illuminate.
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Re: reduced engine power check engine light

Postby dieseloutlaw270 » Oct 24 2012, 8:30am

Take it to the dealer this is a common problem
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Re: reduced engine power check engine light

Postby texasterror84 » Feb 14 2013, 7:24pm

Happened to me about a month ago there is a recall out on it. Just call up your local dealer and they will take care of it. Well they told me its not a recall yet but if your under 100k its covered on your powertrain warranty
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Re: reduced engine power check engine light

Postby todd101 » Mar 21 2013, 6:29am

I just received my recall notice in the mail as well.
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Re: reduced engine power check engine light

Postby dieseloutlaw270 » Mar 21 2013, 6:45am

What's been the fix for everyone else? All they did for me was flash my ecu
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reduced engine power check engine light

Postby Machster69 » Mar 21 2013, 12:38pm

They should have replaced the TPS...
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