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U1000 Diagnostic Trouble Code Discussion for January 2006

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2000 GMC Yukon SLT 5.3L No Start VIN: 1GKEC13T3Y
U1000: Lost comm. Truck will sometimes crank start and shut off, when it does this the interior lamps, drivers door unlock relay, auto headlamps, door and keyin chimes and dash guages fail to work. Module status shows BCM fails to communicate with scanner. Followed information ...
January 11, 2006
2001 Saturn SW2 1.9L Poor Fuel Economy VIN: 1G8ZN84791
U1000: class 2 serial comm problem. Hello to all. this saturn wagon came to us with the complaint of poor fuel mileage from 30 to 20mpg. used snap scanner & found codes. cleared codes & drove car 10 miles. retested for codes none found. coolant was low & seaping at t/stat. put in t/s...
January 20, 2006
2000 GMC Yukon SLT 5.3L No Start VIN: 1GKEC13T3Y
U1000: Lost comm. Truck will sometimes crank start and shut off, when it does this the interior lamps, drivers door unlock relay, auto headlamps, door and keyin chimes and dash guages fail to work. Module status shows BCM fails to communicate with scanner. Followed information ...
January 11, 2006
2001 Saturn SW2 1.9L Poor Fuel Economy VIN: 1G8ZN84791
U1000: class 2 serial comm problem. Hello to all. this saturn wagon came to us with the complaint of poor fuel mileage from 30 to 20mpg. used snap scanner & found codes. cleared codes & drove car 10 miles. retested for codes none found. coolant was low & seaping at t/stat. put in t/s...
January 20, 2006