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U1000 Diagnostic Trouble Code Discussion for July 2008

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2005 Chevrolet Cavalier 2.2L No Start, MIL Lamp on VIN: 1G1JC52F55
U1000: Class 2 Communication Malfunction. ... car would not start. Had all of the codes above the first time then after clearing the computer only get code P1630 & U1000. The engine cranks but does not start. The fuses are ok. Also watching the scaner in power mode see the scan tool match the igni...
July 02, 2008
2006 Chevrolet Uplander LS 3.5L no crank VIN: 1GNDV23L16
U1000: Class 2 Data Link Malfunction. ... over after she has driven it and stops to go in store. She states it always starts fine in the morning when the vehicle is still cool. We found the vehicle does start fine after it has been sitting. Once it is heated up it will not crank over when you firs...
July 22, 2008
2004 Chevrolet Astro 4.3L No Start VIN: 1GNEL19XX4
U1000: Class 2 Communication Malfunction. ... will not restart. My genesys or modis will comunicate with all modules on vehicle. Pid in PCM indicates fuel disabled by VTD (Theft deterent system). Only codes found are u1000, and u1016 codes found in air bag module and trasfer case modules. I can clear ...
July 23, 2008
2006 Chevrolet Uplander LS 3.5L no crank VIN: 1GNDV23L16
U1000: Class 2 Data Link Malfunction. ... over after she has driven it and stops to go in store. She states it always starts fine in the morning when the vehicle is still cool. We found the vehicle does start fine after it has been sitting. Once it is heated up it will not crank over when you firs...
July 24, 2008
2002 Saturn L200 2.2L starts then dies VIN: 1G8JU54F72
U1000: Class 2 Data Link Malfunction - ID Not Learned. This is strange. The car will start up fine ,rev up to 1500 RPM and die. Then it will not start imediately after it dies you have to wait about 10 seconds then it will start up again and go up to 1500 and die. The code 1599 said something about no crank signal...
July 30, 2008
2005 Chevrolet Cavalier 2.2L No Start, MIL Lamp on VIN: 1G1JC52F55
U1000: Class 2 Communication Malfunction. ... car would not start. Had all of the codes above the first time then after clearing the computer only get code P1630 & U1000. The engine cranks but does not start. The fuses are ok. Also watching the scaner in power mode see the scan tool match the igni...
July 02, 2008
2006 Chevrolet Uplander LS 3.5L no crank VIN: 1GNDV23L16
U1000: Class 2 Data Link Malfunction. ... over after she has driven it and stops to go in store. She states it always starts fine in the morning when the vehicle is still cool. We found the vehicle does start fine after it has been sitting. Once it is heated up it will not crank over when you firs...
July 22, 2008
2004 Chevrolet Astro 4.3L No Start VIN: 1GNEL19XX4
U1000: Class 2 Communication Malfunction. ... will not restart. My genesys or modis will comunicate with all modules on vehicle. Pid in PCM indicates fuel disabled by VTD (Theft deterent system). Only codes found are u1000, and u1016 codes found in air bag module and trasfer case modules. I can clear ...
July 23, 2008
2006 Chevrolet Uplander LS 3.5L no crank VIN: 1GNDV23L16
U1000: Class 2 Data Link Malfunction. ... over after she has driven it and stops to go in store. She states it always starts fine in the morning when the vehicle is still cool. We found the vehicle does start fine after it has been sitting. Once it is heated up it will not crank over when you firs...
July 24, 2008
2002 Saturn L200 2.2L starts then dies VIN: 1G8JU54F72
U1000: Class 2 Data Link Malfunction - ID Not Learned. This is strange. The car will start up fine ,rev up to 1500 RPM and die. Then it will not start imediately after it dies you have to wait about 10 seconds then it will start up again and go up to 1500 and die. The code 1599 said something about no crank signal...
July 30, 2008