reduced engine power

Asked by Jul 16, 2017 at 09:17 PM about the 2014 GMC Sierra 2500HD Denali Crew Cab SB 4WD

Question type: Maintenance & Repair

3 Answers

79,345

And? Is the check engine light on? Codes?

the check engine light is on but I don't know of any codes

79,345

Buy a reader or have someone read them for you. Try your local auto parts store.

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