GVWR: Class 2E: 6,001 - 7,000 lb (2,722 - 3,175 kg)
Make: GMC
Manufacturer: GENERAL MOTORS LLC
Manufacturer Id: 984
Model: Sierra
Model Year: 2004
Plant City: Oshawa Truck
Plant Company Name: NA-Canada - Truck
Plant Country: Canada
Plant State: Ontario
Trim: 1500 (1/2 ton)
Vehicle Type: TRUCK
Model year
COMPONENT
Complaint
1999
FUEL SYSTEM, GASOLINE
SEVERE CORROSION OF THE BRAKE LINES BECAME APPARENT DURING A SUDDEN APPLICATION OF THE BRAKES WHICH CAUSED MULTIPLE BRAKE LINES TO RUPTURE AND LEAVE THE VEHICLE WITH NO BRAKES SINCE A LINE FROM THE MASTER CYLINDER TO THE ABS UNIT FRONT LEFT INPUT AND THE ABS TO THE REAR T LINE BLEW SIMULTANEOUSLY. WHEN REMOVING THE DAMAGED BRAKE LINES THEY LITERALLY CRUMBLED TO PIECES DUE TO CORROSION. DURING THE REPAIR TO THE BRAKE LINES SEVERE CORROSION WAS NOTED ON THE FUEL LINES ALSO.
2004
ELECTRICAL SYSTEM: INSTRUMENT PANEL
I HAVE A 2004 GMC SIERRA THAT HAS A MALFUNCTIONING SPEEDOMETER. IT SHOWS READING ANYWHERE FROM 0-100 MPH OVER WHAT YOU ARE TRAVELING AT. WITH THE TRUCK TURENED OFF - THE SPEEDOMETER WILL SHOW IT AT SPEEDS OF UP TO 100 MPH. THIS ALL STARTED AT ABOUT THE 40,000 MILE MARK. WE PREVIOUSLY HAD A 2004 CHEVY 5500 TRUCK THAT TOO BEGAN W/ SPEEDOMETER TROUBLE AT THE 40,000 MILE RANGE. WE KNOW SEVERAL OTHER PEOPLE WITH A 2004 CHEVY/GMC ALL OF WHOM HAVE THIS SAME PROBLEM. CHECKING AROUND THE INTERNET AND IT APPEARS THAT THIS IS A HUGE PROBLEM THAT SHOULD WARRANT A RECALL BEFORE SOMETHING TRAGIC COULD HAPPEN.
