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2003 GMC Sierra 1500 - Consumer Discussions

All GMC Sierra 1500 Models

Hello peps, I have that stupid "reduced engine power" display on my 2003 gmc sierra 1500 hd. I have tried these things; Checked wires at the TB, tested ok; Tested wires at the pedal, tested...
1999-2003 GMC Sierra 1500 Series Pickups...
1999-2003 GMC Sierra 1500 Series Pickups...
I took delivery of my 2004 Sierra 1500 with automatic transmission in December. It was built in August 2003. I wonder if my new truck has one of the problem transmissions mentioned in this article:...
I have a 2003 gmc sierra 1500 4wd with 4.8L engine. My truck stalls more frequently when turning at low rpms but will also stall sitting at a stop. At a stop, the truck will surge before it stalls. I ...
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