The fuel gauge on my coworker's Suburban has started to act up. The truck is a 1999 C1500.
When the truck is on, the fuel gauge will go back and forth from E to F. It does not wobble like fuel is sloshing around, it is E OR F, nothing between. It will stay on one reading for a few minutes, then suddenly flip to the other and stay there for a few minutes. It seems electrical in nature, not something going on inside the tank. The sending unit was replaced when the fuel pump went out a while ago, but not ruling that out as a possible culprit. This is the old body style, but is there any possibility of a bad cluster/stepper motor like later models had issues with? The truck is stock electrically (down to the stereo) and doesn't have problems with other gauges, but the battery did die the other day after sitting for 8+ hours. Not sure if it is related or not, the truck was fine all day today except for the erratic fuel gauge.
When the truck is on, the fuel gauge will go back and forth from E to F. It does not wobble like fuel is sloshing around, it is E OR F, nothing between. It will stay on one reading for a few minutes, then suddenly flip to the other and stay there for a few minutes. It seems electrical in nature, not something going on inside the tank. The sending unit was replaced when the fuel pump went out a while ago, but not ruling that out as a possible culprit. This is the old body style, but is there any possibility of a bad cluster/stepper motor like later models had issues with? The truck is stock electrically (down to the stereo) and doesn't have problems with other gauges, but the battery did die the other day after sitting for 8+ hours. Not sure if it is related or not, the truck was fine all day today except for the erratic fuel gauge.