How do you know if you need to replace a fuel pump on a 1999 Chevy Suburban?
Turn the key to the on postition without starting the truck. You
should hear a buzzing sound in the rear of the truck for approx 3-5
seconds. If you do not hear anything, it's either the fuel pump or
the fuel pump solinoid which is located in the fuse box under the
hood. Does the truck start?