NHTSA Complaint #10041232 — 2001 CHEVROLET BLAZER

GAS GAUGE GOES TO EMPTY AND "LOW FUEL" LIGHT COMES ON AT ANYTIME WHILE DRIVING, STAYS ON FOR SEVERAL SECONDS TO SEVERAL MINUTES AND THEN GAUGE GOES BACK TO CORRECT READING AND LIGHT GOES OUT. AFTER SEVERAL WEEKS OF THIS "SERVICE ENGINE SOON" LIGHT CAME ON. PERSONAL TECHNICIAN REPORTED THAT THIS IS A COMMON PROBLEM IN VEHICLES OF ALL BRANDS AND RELATED TO, THE GAS CAP. ADVISED TO TURN GAS CAP FOR AT LEAST 3 CLICKS WHEN DONE FUELING AND NOT TO TAKE THE CAP OFF THE TANK WHEN THE MOTOR IS RUNNING. REPLACED GAS CAP AND RESET THE COMPUTER, IT WAS FINE FOR 2 WEEKS. GAUGE ACTING UP AGAIN, MECHANIC GOING TO PULL TANK AND CHECK IF A LOSE BAFFLE IS INTERFERING WITH THE SENDING UNIT. MAY HAVE TO REPLACE SENDING UNIT. *LA