Randomly, the truck will go from driving completely normal to getting a message saying "reduced engine power" and then it cuts off power. This has happened 10 to 12 times, the last time it happened I could not drive more than approx 35 MPH even with the gas pedal floored. We have replaced the supposedly defective part(s) to no avail.
2003 GMC Yukon Denali engine complaints
Page 2 of 2: complaints 11 to 12 of 12, newest first, as owners wrote them.
My 2003 gmc denali is knocking in the engine and dealer say's it's normal and will not replace motor and my extended warranty is going to be up in a few hundred miles what do I do???
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