Fuel Pump Odyssey -- Why are there still starting issues? 2010 Pontiac G6

kyrnois
Sun, 25 Apr 2021 18:24:46 +0000
Maintenance/Repairs

2010 Pontiac G6
4 cylinder
143,000 miles approx
Purchased 2011, was a lease and I’m the only owner since then.
2021 Fuel Pump replacement: 19208646 B-(S) Module Kit

TL;DR Replaced the fuel pump twice in 5 years. Recent replacement is March 2021 @ Colorado GM dealership. Car wouldn’t turn over a week ago (April 2021), & Montana GM mechanic replaced the battery & negative battery cable. Car started at the dealership. I picked the car up & after driving 90+ miles car wouldn’t turn over again. Same sounds, same problem. What could be the issue?

The fuel pump was replaced in 2015/2016. No fuel pump or starting issues since then. Car wouldn’t turn over in March 2021. Got fuel pump replaced by Colorado GM Dealer w/ 2 year warrantee. About 1 month later the car wouldn’t start again. In a different state, now at a Montana GM Dealer. Was told by a GM Mechanic in NY state that the issue might be that the CO Dealer improperly installed the fuel pump & the fuel pump connector needs to be checked.

The MT Dealer didn’t agree. Said it was an old battery and a corroded negative battery cable that was the issue. MT Dealer replaced both, car started, and I guess they could drive it around the dealership. After asking them to check the fuel pump connector a 2nd time the MT Dealer tech put the car up on the lift, “wiggled the fuel pump connector” cable and the car didn’t turn off. They determined it wasn’t the fuel pump connector.

I picked the car up 4/23. Drove the car 90+ miles on 4/24, car wouldn’t start with the same problem. Got it towed back to the dealership and they’re not available until tomorrow 4/26.

Is it possible that the fuel pump connector ISN’T the issue? I watched some videos of fuel pump installation and the electrical connection is at the top of the fuel tank, so it’s possible that connection has an issue or the connector part is crappy, but I’m in the Knucklehead category when it comes to cars.

I can provide more info on request.

17 posts - 7 participants