2003 GMC Sierra

2003 GMC SIERRA
113,255 MILES • V8 • 4WD • AUTOMATIC
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KEVIN HUFFMAN
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  • 1 POST
I Have a problem with the engine stalling and sometimes the reduced engine power words show up and will hardly move fast at all. There is also an engine symbol that stays on now and its been reset by a mechanic and now is back on. I have changed the spark plugs, plug wires and air filter and this problem still occurs. could you please give me an idea what it could possibly be. It also seems like it may be missing but also it seems to not be, if this makes any sense. Any advise would be greatly apreciated
Mar 6, 2010 at 7:36 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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