1999 gmc, was running fine, now the gas gauge doesn't work and will only start up and go back dead, replaced the fuel pump, all fuses and relays. ??

Asked by Jul 04, 2015 at 12:33 PM about the 1999 GMC Sierra 1500 SL Extended Cab SB

Question type: Maintenance & Repair

2 Answers

16,850

Are you sure its a fuel problem not a electrical problem like the alternator ?

4,095

Two, probably separate, issues. The guage is could be the result of a bad sender unit in the tank. The "start-then-stop" symptom could be fuel related but could also be electrical (coil pole piece, sensor, etc). Are you getting any diagnostic codes that would indicate a failure (can be checked at local auto parts store)? Also, are you sure you have enough fuel in the tank.........?

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