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Johndavid
05/07/2009, 12:04PM
About: GMC Sierra C/K 3500
Transmission controls
The truck upshifts and down shifts inapropriately and now will not go more than 35 miles an hour. We think that it may be a sensor. Please advize
Michael14285
05/08/2009, 6:25AM
No one is going to be able to help with this information
Year would help / engine / transmission type / Pre or post computer controls ???

