We didn't get the pump ground hooked up properly after we disconnected the ground for the tank filler neck. Cleaned up the frame and the connector and has ran fine since, knock on wood. What makes the AC Delco pump so much better than an Airtex? Both had a one year warranty. I probably would have bought the AC Delco if they would have had it but wanted to get the truck running. Guess if the Airtex craps out we can get the bed off pretty fast and we put anti-seize on the bed bolts so we can get the bed off in 15 minutes.