1500hd wont shift into overdrive intermitten
02-25-2010, 01:01 AM
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Staging Lane
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1500hd wont shift into overdrive intermitten
i have a 2003 gmc 1500hd that wont shift into overdrive anyone have similar problems? i need to replace my bank 2 sensor 2 o2 sensor so i have a check engine light on, could that be throwing the truck into limp/home mode so it wont shift into top gear? also this is intermitten as well as my check engine light.
02-25-2010, 12:28 PM
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TECH Apprentice
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If you have any data logging software, check for any misfires. A misfire will cause the TC to not lock up. Also make sure your bank 2 sensor 2 is the only code stored.
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