GVWR: Class 2G: 8,001 - 9,000 lb (3,629 - 4,082 kg)
Make: GMC
Manufacturer: GENERAL MOTORS LLC
Manufacturer Id: 984
Model: Sierra
Model Year: 2005
Other Engine Info: Iron
Plant City: Flint
Plant Company Name: GM Truck Group
Plant Country: United States (USA)
Plant State: Michigan
Trim: 1500 (1/2 ton)
Vehicle Type: TRUCK
Model year
COMPONENT
Complaint
2004
ELECTRICAL SYSTEM: INSTRUMENT PANEL
MY 2004 GMC SIERRA 1500 HAS ERRATIC SPEEDOMETER MALFUNCTIONS. I FIRST NOTICED THIS ON A TRIP WITH MY SPEEDOMETER READING 65 MPH AND ALL THE TRAFFIC OF A 4 LANE EXPRESSWAY WAS PASSING ME. I THEN REALIZED MY PORTABLE GPS UNIT WAS READING A MUCH SLOWER SPEED. SPEEDING UP TO THE GAPS READING MY TRUCK SPEEDOMETER REGISTERED 110 MPH. AT TIMES THE READINGS ARE REVERSED. AND AT OTHER TIMES THE SPEEDOMETER DOESN'T WORK AT ALL. AFTER RESEARCH ON THE INTERNET I?VE DISCOVERED GM HAS USED FAULTY ?CLUSTER STEPPER MOTORS? AND MANY CUSTOMERS ARE HAVING THIS SAME PROBLEM AND GM KNOWS ABOUT THE PROBLEM. FORTUNATELY THERE HAVEN?T BEEN ANY REPORTED DEATHS YET DUE TO THE PROBLEM ONE WOULD HOPE THAT A RECALL WOULD RESULT BEFORE THERE ARE FATALITIES. *JB
2005
FUEL SYSTEM, GASOLINE
FUEL TANK VENT SYSTEM PLUGS UP WITH DUST. - CAUSES FUEL TO SPILL WHEN USING AUTOMATIC FILLERS, ALSO SERVICE ENGINE SOON LIGHT. - HAD TO REPLACE CANISTER (FULL OF DUST) AND PURGE SOLENOID AT 95,000 MILES. *TR
