Question about 2002 GMC Sierra 2500HD

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2002 GMC 2500HD Diesel service engine light on, automatic but won't shift gears. also shift indicator light don't work all the time

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  • pking3199 Feb 10, 2010

    Got the truck to the mechanic it was just a sensor on the outside of the transmission. I found out that is a common problem on these trucks. But $600.00 to fix

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Out of commision right now? sounds like it needs a new transmission, or out of fluid, but if the fluid is low or empty theres probably some dammage thats been done. i bet if you run that computer to check that code it will only confirm your guesses...

Posted on Feb 08, 2010

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