2001 Tahoe fuel pump woes

616 Views 14 Replies 5 Participants Last post by HITDOGG, 2 mo ago

HITDOGG

Discussion Starter · 2 mo ago

Hey folks, I have a 2001 Chevy Tahoe that I'm having reoccurring fuel pump problems with. I've replaced the fuel pump 2 times in the past 2 years. I guess it's possible that I have gotten 2 fuel pumps that only last a year each. They are Delco fuel pumps ordered from Rock auto. I can turn the key, hear the pump run, and it will start for just a few seconds. It's like I have to keep doing that until the fuel pump will stay running. Same symptoms as the last couple of times I changed the pump. Is there something else that could be going on that a new fuel pump will mask? I haven't had time to properly trouble shoot yet, but symptoms so far is just as its been previous. As always thanks in advance

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BackyardMech

· #2 · 2 mo ago

If you're not consistently running the tank on Empty, then you could try running a larger wire back. I know that year is notorious for fuel pumps. I had a 2000 blazer and had to change the pump twice in 5 years. I had ab 87 blazer once that smoke pumps regularly. Ran #10 wire back and it stopped.

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BackyardMech

· #4 · 2 mo ago

RayVoy said:
Some models eat pumps for breakfast.

Some people will tell you that you need to keep the fuel level high enough that the liquid keeps the pump cool; they could be right; but I don't buy into that theory, I don't think the pump runs enough that it needs cooling.

Check the pump relay, the contacts may be burnt.

And as BYM says the current carrying capacity of the factory wiring is low, a heavier gauge may help (wish I had considered that on the '84 Blazer it loved pumps).

The other area to check is the condition of the ground.

Don't run enough to need cooling? If your engine is running so is the pump.

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