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1997 Chevy Tahoe Fuel gage pegged

Tiny
MODIFIED28
  • MEMBER
  • 1997 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Just bought 97 Tahoe a month ago and truck did not start one morning. Determined that there as no power to fuel pump and fuel gage was pegged at 3 o'clock.

Checked voltage to pump and had 12VDC. I replaced the fuel pump assembly and truck started but fuel gage still not working. Checked voltage to float and it appears to have about 9VDC.

Is this correct?

I checked float and watched ohm's change as float was moved from empty to full.
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Monday, January 25th, 2010 AT 10:42 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Basically, if the gauge is pegged and the rheostat is working (you checked float) either there is a problem with the bodly control module (BCM) or the gauge itself.

Have the BCM checked to see if that is where the problem is coming from. LEt me know what you find.

Joe
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Tuesday, January 26th, 2010 AT 10:29 AM
Tiny
MODIFIED28
  • MEMBER
  • 2 POSTS
Can you tell me where the BCM is (under dash?) And what it looks like or the amount of wiring that connects to it. A wiring diagram would be great too.

Thanks for your help
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Tuesday, January 26th, 2010 AT 7:59 PM

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