No electric to fuel gauge or fuel pump

DAVID GADBERRY

MEMBER
1998 CHEVROLET SILVERADO
5.7L
V8
2WD
AUTOMATIC
164,000 MILES

Replaced intake manifold gaskets everything went back great. Timing was off wouldnt start fixed the timing issue. Then while trying to start noticed fuel gauge needle was laying all the way over to the right. And fuel pump was not making any noise. I bought new fuel pump relaybut still no results.

Friday, March 20th, 2015 AT 12:58 PM

3 Replies

HMAC300

MECHANIC
48,601 POSTS

The wire is grounded for the sending unit causing gauge to read full all the time. It may be the fuel pump balance module is bad or maybe a fuse check all fuses under hood fuse box then scan for codes. Also if truck won't start with your key try a different one if you have one. It may be a security issue especially if you disconnected battery. Also check fuses in car

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Friday, March 20th, 2015 AT 1:13 PM

DAVID GADBERRY

MEMBER
1 POST

The motor is turnning over just not getting any fuel, the gauge just now quit working while attempting to start. Checked all fuses underhood and in the truck. Where is the fuel pump balance module located? If the fuel pump just all of a sudden quit working would that cause gauge to quit the needle goes way past full and is laying down when you turn key on? Any help is much appreciated thank you

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Friday, March 20th, 2015 AT 1:30 PM

HMAC300

MECHANIC
48,601 POSTS

The pump and gauge are on two different wires. There is a pump and sending unit in the tank. The relay for the gauge is on the fp module which is on lh side of frame rail probably near the tank. You need a scanner to see if it works or not but a pro has to check this. Also some of those years had bad connections at pump and about a foot of harness with a different connector had to be put on when pump was changed. A pro should really check this so he can scan the pump module to see if it's the culprit otherwise you are shooting in the dark and may waste money on parts that are not needed.

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