GVWR: Class 1C: 4,001 - 5,000 lb (1,814 - 2,268 kg)
Make: GMC
Manufacturer: GENERAL MOTORS LLC
Manufacturer Id: 984
Model: Sonoma
Model Year: 2003
Other Engine Info: 90 Degrees
Plant City: Shreveport
Plant Company Name: GM Truck Group
Plant Country: United States (USA)
Plant State: Louisiana
Trim: 1/2 ton
Vehicle Type: TRUCK
Model year
COMPONENT
Complaint
2002
OTHER
MY SPARE TIRE ON MY 2002 GMC SONOMA PICKUP FELL OUT OF ITS CARRIER. IT ROLLED ACROSS TWO LANES OF TRAFFIC, LUCKILY TRAFFIC WAS LIGHT AND NO ONE WAS STRUCK BY THE RUN AWAY WHEEL. I APPEARS THE CABLE THAT SECURES THE SPARE ON THE TRUCK PARTED. THIS IS THE FIRST TIME THE SPARE HAS BEEN OFF THE TRUCK. *JB
2003
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
DT: CONTACT STATES ABOVE THE REAR END DIFFERENTIAL THERE IS A VENT TUBE PLACED BETWEEN WHERE THE TRUCK BED STOPS AND THE CAP STARTS, AND THERE IS ABOUT 1 -1/2 INCH SPACE LEFT BETWEEN. THIS SPACE LETS WATER COLLECT, RUNNING DOWN THE TUBE, DESTROYING THE OIL, AND CAUSING THE LUBRICATION ON THE REAR END DIFFERENTIAL TO BE DESTROYED. A TECHNICAL SERVICE BULLETIN FOR SEPTEMBER 2004 DISCUSSES THE SAME COMPONENT.*AK THE REAR SEAL HAD BLOWN OUT WHICH CAUSED GREASE TO ESCAPE. THE CONSUMER WAS TOLD THE ENTIRE REAR END INCLUDING THE AXLE BEARING AND SEALS HAD TO BE REPLACED. *JB