:cool2:
A few weeks ago I drove home, parked the V in the garage, everything normal. Went to start the car next morning and it just cranked, no light off. I checked the fuel rail and found no fuel or pressure, so immediately suspected fuel pump. I spent a few nights on diagnosis, located the fuel pump fuse and relay, both good. About the time I had my shear out ready to cut the fuel pump access panel under the back seat, I finally stumbled across the fuel pump module and connector recall.
I had the car towed to the dealer and sure enough the diagnosis was that the car had the "classic pump module and connector damage". The failure mode relates to the contacts loosing spring tension, causing poor contact, arcing and eventual connector failure. In severe failure mode, it's actually possible for the arcing and heat to breach the tank cover, causing a SERIOUS fire hazard condition.
Interestingly the dealer was able to drop the tank WITHOUT dropping the rear clip OR the exhaust (I didn't get details on how exactly they did that). Most people cite that as the justification for cutting the rear seat access panel. They replaced the fuel pump module and connector under the recall at no charge and the car is running better than ever. I suspect the connector was breaking down for some time before failure and causing high resistance/voltage drop at the pump, leading to low/fluctuating fuel pressure. Before the fuel pump & connector replacement, the car smelt very rich at idle. That condition now seems to be gone. It feels like a bit better throttle response and top end power as well.
I am very pleased Cadillac recognizes the seriousness of this issue and stands behind they're cars. If you haven't had this recall completed yet, I have two pieces of advice. 1. If you ever have a fuel leak at the tank, STOP DRIVING the car immediately. This could be the result of pump connector arcing melting a hole in the tank cover.
2. If you have rough idle, stalling, rich/fuel odor at idle, this may indicate connector arcing is beginning. Have it diagnosed before it gets worse.
Carry on & keep calm.
A few weeks ago I drove home, parked the V in the garage, everything normal. Went to start the car next morning and it just cranked, no light off. I checked the fuel rail and found no fuel or pressure, so immediately suspected fuel pump. I spent a few nights on diagnosis, located the fuel pump fuse and relay, both good. About the time I had my shear out ready to cut the fuel pump access panel under the back seat, I finally stumbled across the fuel pump module and connector recall.
I had the car towed to the dealer and sure enough the diagnosis was that the car had the "classic pump module and connector damage". The failure mode relates to the contacts loosing spring tension, causing poor contact, arcing and eventual connector failure. In severe failure mode, it's actually possible for the arcing and heat to breach the tank cover, causing a SERIOUS fire hazard condition.
Interestingly the dealer was able to drop the tank WITHOUT dropping the rear clip OR the exhaust (I didn't get details on how exactly they did that). Most people cite that as the justification for cutting the rear seat access panel. They replaced the fuel pump module and connector under the recall at no charge and the car is running better than ever. I suspect the connector was breaking down for some time before failure and causing high resistance/voltage drop at the pump, leading to low/fluctuating fuel pressure. Before the fuel pump & connector replacement, the car smelt very rich at idle. That condition now seems to be gone. It feels like a bit better throttle response and top end power as well.
I am very pleased Cadillac recognizes the seriousness of this issue and stands behind they're cars. If you haven't had this recall completed yet, I have two pieces of advice. 1. If you ever have a fuel leak at the tank, STOP DRIVING the car immediately. This could be the result of pump connector arcing melting a hole in the tank cover.
2. If you have rough idle, stalling, rich/fuel odor at idle, this may indicate connector arcing is beginning. Have it diagnosed before it gets worse.
Carry on & keep calm.
