WHAT IS CAUSE OF ERRATIC FUEL GUAGE? on 1999 Chevrolet Silverado 1500

GUAGE GOES TO EMPTY EVERY TIME TANK IS FILLED. MAY SHORTLY GO TO FULL OR STOP ANYWHERE IN BETWEEN. IS ACCURATE MOST OF TIME, BUT CAN FLOP AROUND UNDER ANY CIRCUMSTANCE.

by in Heflin, LA on February 02, 2012
3 answers
ANSWER by , February 02, 2012
YOUR SENDING UNIT IS MALFUNCTIONING. IN THE TANK YOU HAVE A FUEL PUMP AND A SENDING UNIT I REC YOU CHANGE BOTH AT THE SAME TIME
ANSWER by , February 03, 2012
FUEL PUMP OR FUEL REGULER
ANSWER by , November 19, 2012
connector on fuel pump sending side,will eventually lead to fuel pump failure.GM is aware but does't care.New after market pump will have updated connector and works perfect.