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2005 Chevrolet Silverado 2500 HD Question: Power Drops off after driving it for a while.

 

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Bill Fellerman, 6.6L V8 Diesel Turbo, Saint Paul, MN, December 29, 2009, 20:43
 Rookie

I drive my truck for a while, I will be going like 70 down the high way and then is all of a sudden slows down to like 65 and I can't get my RPM over 2K, what would this be

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, December 30, 2009, 16:33
     Master

    Do you have any warning lights on? I would get the diagnostic trouble codes checked and see if the engine or transmission control modules have recorded any faults. I would consider getting the software in both modules checked to see if it up to date, and update if they aren't.

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