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U1000 Diagnostic Trouble Code Discussion for October 2014

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2002 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13S32
U1000: Class II serial data. ... we got the tools in order to hold camshafts in the rear and the wedge tool for timing chain and removed cylinder head to have repaired. Wedge tool did pop out causing tensioner to fully extend out but thanks to IATN, we used the tricks of a coat hanger to ...
October 08, 2014
2001 Pontiac Sunfire SE 2.2L Stall VIN: 1G2JB52401
U1000: Class 2 Communication Malfunction. Nothing like trying to fix a car that runs great when you have it in the shop! Car came in after another mechanic had replaced the crank sensor due to stalling problem and hard restart. I then replaced the camshaft sensor after being unable to duplicate the pr...
October 21, 2014
2002 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13S32
U1000: Class II serial data. ... we got the tools in order to hold camshafts in the rear and the wedge tool for timing chain and removed cylinder head to have repaired. Wedge tool did pop out causing tensioner to fully extend out but thanks to IATN, we used the tricks of a coat hanger to ...
October 29, 2014