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2001 suburban 2500 which fuel pump

hedinj's Avatar
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Join Date: Jun 2011
Posts: 2

October 29th, 2011, 9:27 AM   #1  
2001 suburban 2500 which fuel pump

I have a 2001 suburban 2500 4x4 and need to replace the fuel pump. There are two listed. Does anyone know how to tell by the VIN # which pump is required? also, any recommendation on brands to use?

MDTAHOE's Avatar
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Professional Mechanic

Join Date: Nov 2008
Posts: 2,950
Bowie, MD

October 29th, 2011, 10:42 PM   #2  
Any good parts store should be able to tell you buy the vin, not a big box chain store. Only use a AC Delco or Delphi pump anything else will fail quickly

kirkgrau's Avatar
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Join Date: Aug 2011
Posts: 9

October 31st, 2011, 9:01 PM   #3  
The 2500's have a pretty convoluted fuel system. Actually have 2 tanks although there is no manual switching between them, they function as a single tank. Fill goes to rear (secondary) tank where it is transferred by secondary fuel unit to front (primary) tank. If you are able to utilize the entire 38.5 gallon volume of the system you probably need the front (primary) pump.

Have a leak somewhere in mine and have not had time to crawl under it to find it (doesn't help that it seems to be either raining or even snowing when I have some time to inspect it).

Good Luck,


hayden427@gmail.com's Avatar
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Join Date: Aug 2016
Posts: 1

August 1st, 2016, 4:30 PM   #4  
Explains a lot...

I was driving through northern Arizona/New Mexico and got down to just under of half a tank and it started cutting out on me . Luckily I rolled past the only gas station in 100 miles and filled it up. Ran fine after that. Sounds like the rear transfer pump is failing from the sound of it. Just have to keep it above half tank until I get home...

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