Charlesburk
Newbie
I have a 1997 Gmc sierra 1500 L31 engine and I'm running (off and on) a hypertech power programmer 3. Has anyone else have this programmer? If so, anyone else had any problems with their fuel pump relay suddenly not getting any connection, allowing it not to start and run? I've had this issue twice now and would like some input on what could be wrong please!