C Connors6 New member Joined Nov 2, 2011 Messages 1 Reaction score 0 Points 0 Nov 2, 2011 #1 My 1999 1500 suburbans air injection pump stays on after shuting off the engine. I have changed the pump and relay but it still happens. What else should I look at changing?
My 1999 1500 suburbans air injection pump stays on after shuting off the engine. I have changed the pump and relay but it still happens. What else should I look at changing?
