Loss of engine power

Asked by Joshua Jun 13, 2016 at 09:34 AM about the 2009 GMC Sierra 1500 SLE Ext. Cab LB

Question type: Maintenance & Repair

I changed my air filter and my 2009 gmc.
Shortly after check engine light came on as
well as loss or engine power. I changed it
back but I still have the same problem.what
did I do wrong?

2 Answers
42,415

Auto_Centric answered 8 years ago

Nothing unless you unplugged the MAF sensor..Have it read for codes, even if the check engine light is NOT on the computer will have stored information and codes. Discount auto stores will read codes for no fee. write them down.

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