1999 Cadillac STS gas guage

1999 CADILLAC STS
109,000 MILES • V8 • FWD • AUTOMATIC
Avatar
SPEERS99STS
  • MEMBER
  • 1 POST
When I start my car, the gas gauge goes from empty to full. But then it goes down to empty and does not work at all. It started after I disonnected the hot wire from the fuse box under the back seat. I checked every fuse that said anything about gas, but have not been able to figure it out.
Sep 24, 2008 at 12:12 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
2CARPRO JACK
  • CAR REPAIR CONTRIBUTOR
  • 11,533 POSTS
Could be a problem with the rear integration module or the PCM. The fuel level signal goes from the tank sender to the integration unit to the PCM then to the cluster.This might be worth a trip to the dealer so they can put it on a diagnostic scan to see if the PCM is getting signal or it is another problem
Sep 26, 2008 at 8:21 AM
Advertisement