Subject: | No start, IPC Inop, ABS, Traction, Stability Telltales Illuminate - keywords communication gmlan high lan no speed |
Models: | 2008 Buick Lucerne and Cadillac DTS |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
A customer may comment they experience one or more of the following concerns, and one or more of the following DTC may be stored in the vehicle.
• | SERVICE STABILITRAK, SERVICE SUSPENSION SYS, SERVICE TRACTION CONTROL may be displayed on the Driver Information Center (DIC). |
• | The engine will not crank over / start. |
• | Instrument Panel Cluster (IPC) gauges are inoperative. |
C0035 | Left Front Wheel Speed Sensor Circuit |
C0040 | Right Front Wheel Speed Sensor Circuit |
C0045 | Left Rear Wheel Speed Sensor Circuit |
C0050 | Right Rear Wheel Speed Sensor Circuit |
C0186 | Lateral Accelerometer Circuit |
C0196 | Yaw Rate Circuit |
C0242 | Engine Control Module (ECM) Indicated TCS Malfunction |
C0450 | Steering Assist Control Actuator Circuit |
C0710 | Steering Position Signal |
C0899 | Device Voltage Low |
C0900 | Device Voltage High |
U0073 | High Speed Communication Bus |
U0100 | Lost Communication With Engine/Powertrain Control Module (ECM/PCM) |
U0101 | Lost Communication With Transmission Control Module (TCM) |
U0104 | Lost Communication With Cruise Control Module |
U0121 | Lost Communication With Electronic Brake Control Module (EBCM) |
U0122 | Lost Communication With Vehicle Dynamics Control Module |
U0132 | Lost Communication With Ride Level Control Module |
U0140 | Lost Communication With Body Control Module (BCM) |
U1814 | Powertrain High Speed Communication Enable Circuit |
U2099 | High Speed Communication Enable Circuit |
The cause may be the engine wire harness is chaffing on the transaxle case (1) near the EBCM.
Inspect the engine wire harness. Repair the wiring as needed using procedures found in Diagnostic Information and Procedures- Wiring Repairs.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.