01' tahoe ignition/electrical problems!

i have been having problems with my wifes 01' tahoe. it has been stalling out at low speeds then, other times it just won't start, the fuel guage won't read correctly all the time and the lights on the dash will flicker and pulsate, i have replaced the fuel filter, plugs and wires, fuel pressure regulator and i cannot seem to isolate the problem does anybody have any suggestions please

Start checking and cleaning ground wires and battery connections, there is a ground near the fuel tank that may be causing the problem with the fuel gauge.

i have been having problems with my wifes 01' tahoe. it has been stalling out at low speeds then, other times it just won't start, the fuel guage won't read correctly all the time and the lights on the dash will flicker and pulsate, i have replaced the fuel filter, plugs and wires, fuel pressure regulator and i cannot seem to isolate the problem does anybody have any suggestions please


when many electrical issues occur unrelated it is usually the ground frame rail connections corroded or battery/engine supply ground wires in need of cleaning,,as mentioned this is how to start in the troubleshooting..

don't worry about the fuel gauge this is because the pickup in the fuel tank is not made with the proper materials [defect] and gets film build up that interferes with sender signal to dash fuel guage..your one of millions of GM owners with this problem...