I work for a company that has a fleet of Ford and GM 1/2 ton and 3/4 ton trucks. For the third summer in a row we have had several fuel pump failers and this only happens during the hottest part of the year. Ambient temps can reach 105 to 115 some days and the trucks idle alot. Our mechanics replace them with OEM pumps. Is there a better pump out there? Again, this only happens with our GM trucks and only during the summer months.
Interesting, I've heard of the fuel pump issue but I think the severity of it has been dwarfed by GMs engine and transmission issues, so it hasn't gotten a lot of attention.
I'll try to do some research on it. Does the fuel pump just outright fail at those temps and not work with the temps drop? If so, I would imagine the OEM pump replacement will eventually do the same thing if the part was not updated. It will depend on whether GM decided to fix the root cause or just try to push folks through warranty with the same thing.
Once the truck sets for an hour or so it will start but usually only runs for an hour or so. Eventually it won’t start at all.
@baloo How long do the OE pumps last after replacement? Are they having to be replaced multiple times?
The new pumps last until mid to late summer the following year. Around 12 to 14 months
@baloo I remember a similar issue with GM/Chevy's in the late 90's. The shop at the place I worked got so tired of dropping the fuel tanks that they cut holes in the bed and hinged the flap to make the replacement easier. I don't remember if they ever figured it out, but when the Ford replacements came in, they didn't have that problem.
