October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Data Communication System Expand All (for easy ctrl-f) Collapse All Schematic Wiring Diagrams Diagnostic Information and Procedures Control Module U Code List DTC B1000: Electronic Control Unit (ECU) Performance/Side Object Detection Performance DTC B1001: Option Configuration Error DTC B1004: Keep Alive Memory (KAM) Reset DTC B1016: VIN Not Programmed DTC B101D: ECU Hardware DTC B101E: Electronic Control Unit Software DTC C0550: Electronic Control Unit DTC P0601-P0607, P060A-P060C, P0610, P062F, P16E9-P16F0, or P262B: Control Module DTC U0020: Low Speed CAN Communication Bus Performance DTC U0073 or U2100: Control Module Communication Bus Off/ECU HS Bus Off/ECU LS Bus Off/Controller Area Network (CAN) Bus Communication DTC U0074: Control Module Powertrain Expansion Communication Bus Off DTC U0076: Control Module Communication Powertrain Sensor CAN Bus Off DTC U0100 - U02FF: Control Module U Code List (Except U010E, U029D and U029E) DTC U010C, U010E, U029D, U029E, or U02A3: Lost Communication with Reductant/NOX/Particulate Matter Sensor Module DTC U1500, U1511, U1512, or U1513: LIN Bus Fault/Lost Communication With RCM DTC U1814: Powertrain High Speed Communication Enable Circuit DTC U1826: Lost Communication With Multi-Axis Acceleration Sensor Module on Bus "B" DTC U1865: Fuel Operated Heater Lost Communication with Engine Control Module DTC U18A2: Lost Communication with Fuel Pump Driver Control Module DTC U2099: High Speed Communication Enable Circuit DTC U2616: Fuel Pump Driver Control Module Lost Communication with ECM Symptoms - Data Communications Scan Tool Does Not Power Up Scan Tool Does Not Communicate with High Speed GMLAN Device Scan Tool Does Not Communicate with Low Speed GMLAN Device Data Link References Repair Instructions Description and Operation