u0101 with viper 5901 on 06 2500hd diesel

After installing a Viper 5901 with an Xpresskit XK09 DLPKGM on my 06 Silverado 2500HD Diesel. Once in a while when I remote start the truck it starts and turns off in about 3 seconds. I then hit the remote start button again on the keyfob so the alarm thinks I shut down the remote start otherwise the truck will not start even with the key.  When the truck turns off after the 3 seconds I get a CEL with "U0101 Loss of Communication with TCM"  I sometimes clear the code and sometimes I just drive off with the CEL on and truck shift fine.  Below is my current wiring.  Not sure whats going on, any help would be greatly. appreciated.

Xpresskit XK09  

Pin Description Connect toD2D  to D2D of 5901Pin 18 Green J1850 to OBDII Pin 2  Viper 5901  Tach Threshold on/off Set to OFFD2D Jumper Setting Set Horizontal for external module like XK09Light Flash Polarity Set Light Flash Polarity to negative (-)   Main Harness (H1) 12-Pin Connector    H1/2 Red (+)12v CONSTANT INPUT to Red Wire Ignition HarnessH1/3 Brown (+) SIREN OUTPUT Red wire of SirenH1/5 Black (-) CHASSIS GROUND Chassis GroundH1/11 White PARKING LIGHT OUTPUT (set to negative under 5901 cover) to Grey/Black pin 2 on BCM (Brown or Tan Plug)     Auxiliary Harness (H2) 7-Pin Connector    

H2/7 Grey/Black (-) DIESEL WAIT TO START INPUT Purple connector Dark Blue wire in Fuse and Relay control Box in engine compartment

H2/9 Violet/Blue TACHOMETER INPUT WIRE Purple connector White wire in Fuse and Relay control Box in engine compartmentH2/15 Grey N/O or N/C (-) HOOD PIN SWITCH INPUT to Hood PinH2/17 Brown (+) BRAKE SHUTDOWN WIRE to WHITE/ Black wire on pedal switchH2/18 BLACK/ White (-) NEUTRAL SAFETY SWITCH INPUT to Chassis Ground  Remote Start Heavy Gauge (H3) 8-Pin Connector    H3/1 Pink IGNITION 1 INPUT/OUTPUT to Pink in Ignition HarnessH3/2 RED / White (+) (30A) FUSED IGNITION 2 / FLEX RELAY INPUT 87 H3/3 Orange ACCESSORY OUTPUT to Orange in Ingition HarnessH3/4 Violet STARTER OUTPUT to cut Yellow on starter sideH3/5 Green STARTER INPUT to cut Yellow on key sideH3/6 Red (+) (30A) FUSED IGNITION 1 RELAY INPUT to Pink Ignition 1H3/9 RED / Black (+) (30A) FUSED ACCESSORY/STARTER RELAY INPUT to RED / Black in Ignition Harness

The connections you listed seem fine in print... The fact that it does start and then shuts off sounds like an immobilizer bypass issue in this case the xk module not doing it's job correctly. In some cases even though DEI says you don't need to you can try also hooking up the power and ground in the separate harness not just having it come from the d2d harness. Using them both helps to prevent excessive current draw and voltage drops. Check to make sure ALL connections are making good connections to each wire. If the problem continues then I would try re-flashing the firmware to the XK module and or replacing it.Gary Sather

Thank you for the info.  To verify what you mentioned, I should relocate the "green" (-) Ground and the "black" (+)12V off the D2D cable from the 5901 and run it directly to ground and 12v from truck.  I'll give that a try.