Help Request Posted VIN: 1GCEK19Z35 This vehicle came in about a week ago with a communication problem. Customer needs to get state inspection sticker and they said there was no communication with the vehicle. I hooked up our Tech 2 and had no problems at all.

Chevy trail blazer code U1000. The last 5 seconds after establishing class 2 serial data communication. Problem with the wheel bearings on my 98. 2001 Oldsmobile Alero - What does this code u1000 loss of serial communication for class 2- question about Cars & Trucks. I have a 2006 Cadillac CTS 2.8L DM, both needles are dead (GAS-TEMP. That the communication problem starts. Communicate on class 2 serial data.

Data came through just fine on all. VIN: 1GNEC13Z04 U1000: Class serial data malfuntion. 'no start-check my alternator'! Would barely start and stall! Starter may chatter like dead battery or bad switch!

No communication pcm/tcm! Found codes in BCM U1000 U1016. Multi Poster 7 Free Download there. and B 2961.

Finally got U0107 from pcm and was able to unplug tac module to. VIN: 1GTEK19V43 U1000: Class 2 communication error. Car came in with Service 4WD light on.

I found TSB for faulty TCCM and flash update. I replaced TCCM and performed reprogramming through GM-TIS.

After this I thought I would be nice and check PCM for updates. I found an update for Idle surge so I. Cios Installer 249.

VIN: 1N6AA07D88 U1000: can no comm. I have this 08 titan with a crank but no start. Hooked up my scanner and scanner would not communicate with ecu. I found code u1000 and c1735 ign fault in bcm and tcm. I also noticed that the MIL will not turn on.

I checked power supply to ecu no pr.