Wiring Problems of GMC Suburban

Fuel gage was acting erratic went full then empty with full tank . A few days later the truck would not start. Found fuse in engine compartment blown for fuel pump. Fuel pump wiring was melted in fuel tank causing short. Had to replace pump and harness which was part of the pump housing. Also replaced fuel filter due to lack of fuel flow (no power) a week later.

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Fire then smoke coming from wire harness.

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Wiring to the electric fuel pump can over heat (and possibly cause a fire) when the fuel pump fails. This would occur when the fuel pump is in a failed (locked) condition while power is applied to the pump. The electrical current draw is higher than the rating of the wiring.

The vehicle caught on fire. The fire chief stated it was possible there was a short in the steering column.

Repeated excessive wear on front brake pads and now on rear brake drums. We are very conservative drivers and typically get 80-100,000 miles on a set of brakes. This is our second set of front pads. We do tow heavy loads. The Suburban is equipped with a heavy duty towing package . It has already had the steering gear box replaced by the dealer. The front pads have been replaced once and the rear brakes have been adjusted, also the master cylinder has been replaced by the dealer. The brakes just do not seem of sufficient capacity to stop a vehicle of this mass towing load. We've owned Suburban's since 1973 so we do feel we have a degree of experience in this area. Finally when the vehicle is driven at highway speeds and a bump is hit, the entire electrical system shorts out for approximately 1/6-1/5 of a second causing everything to go dark. I suspect an exposure in a wiring harness. *****dimsii ivoq entry posted after 12/12/02 cut over to artemis****763731.

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Couldn't start vehicle. Attempted to replace oem delco battery with new battery and found acid had leaked from positive side terminal, totally corroding battery bolt, terminal and cables. Acid had leaked onto high pressure a/c line, electrical wiring and brake lines, corroding them. Significant corrosion on body metal. Repair estimates run in excess of $500. Negotiating with GMC for repairs under a products liability claim.

During summer of 1999, I noticed battery acid residue below battery on lines and wires. Cleaned off with oil. Brakes were mushy. In October, 2000 brakes slowed vehicle but required additional pressure to stop. Noticed additional battery acid build up on lines and wiring. Brakes failed Nov. 22, 2000. Added brake fluid. Vehicle would not start on Nov. 28, 2000. Positive battery post separated from battery. Spent two hours removing broken-off battery from battery bolt,cables and installing battery. Poured baking soda water on affected area of lines and wires.

Smoke came from behind door panels and dash area, claim 46-0355-298.

Electrical wires overheated.

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Battery case cracked at entry of terminal causing acid to leak out. Owner replaced battery and flushed area with water/baking soda solution to neutralize acid. Possible further corrosion damage to a/c plumbing and other components/wiring in the vicintiy of the battery. Vehicle was inoperative.

Fuel pump failed, upon inspection of the unit mechanic found that the insulation was burned on the wiring inside of the tank. We have had this none functioning fuel system problem for over a year. This was the first time it completely quit and would not start. It would seem to me that amp draw enough to melt back wire insualtion insde the fuel tank should be fuse protected! last time the truck would not start the dealership we use in clinton mo ( raysick GMC, clinton mo) towed the truck in and once inside it started. But the truck has left us stranded numerous times before.