Sierra, Silverado 2006-2007

Diagnosis & Testing


To check and clear Diagnostic Trouble Codes (DTCs) connect a scan tool to the vehicle-s Data Link Connector (DLC) located to the left of the steering column under the instrument panel. The codes cannot be displayed using the flash code (flashing light) method.

Diagnostic Trouble Codes

C0035 Left Front Wheel Speed Sensor Circuit

C0040 Right Front Wheel Speed Sensor Circuit

C0055 Rear Wheel Speed Sensor (both wheels) Circuit

C0110 Pump Motor Circuit

C0161 Antilock Brake System (ABS)/Traction Control System (TCS) Brake Switch

C0201 Antilock Brake System (ABS) Enable Relay Contact

C0221 RF Wheel Speed Sensor Circuit Open

C0222 RF Wheel Speed Signal Missing

C0223 RF Wheel Speed Signal Erratic

C0225 LF Wheel Speed Sensor Circuit Open

C0226 LF Wheel Speed Signal Missing

C0227 LF Wheel Speed Signal Erratic

C0229 Drop Out of Front Wheel Speed Signals

C0235 Rear Wheel Speed Signal Circuit Open

C0236 Rear Wheel Speed Signal Circuit Missing

C0237 Rear Wheel Speed Signal Erratic

C0238 Wheel Speed Mismatch

C0240 EBCM Malfunction

C0241 EBCM Control Valve Circuit

C0242 EBCM Control Valve Circuit

C0243 EBCM Control Valve Circuit

C0244 EBCM Control Valve Circuit

C0245 EBCM Control Valve Circuit

C0246 EBCM Control Valve Circuit

C0247 EBCM Control Valve Circuit

C0248 EBCM Control Valve Circuit

C0251 EBCM Control Valve Circuit

C0252 EBCM Control Valve Circuit

C0253 EBCM Control Valve Circuit

C0254 EBCM Control Valve Circuit

C0265 EBCM Relay Circuit

C0266 EBCM Relay Circuit

C0267 Pump Motor Circuit Open/Shorted

C0268 Pump Motor Circuit Open/Shorted

C0269 Excessive Dump/Isolation Time

C0271 EBCM Malfunction

C0272 EBCM Malfunction

C0273 EBCM Malfunction

C0274 Excessive Dump/Isolation Time

C0281 Brake Switch Circuit

C0284 EBCM Malfunction

C0286 ABS Indicator Lamp Circuit Shorted to B+

C0287 Delivered Torque Signal Malfunction

C0288 Brake Warning Lamp Circuit Shorted to B+

C0290 Class 2 Data Link Malfunction

C0291 Body Control Module (BCM) Configuration Not Valid

C0292 Lost Communication With Engine Control System

C0297 Powertrain Configuration Data Not Received

C0298 Powertrain Control Malfunction

C0550 Electronic Control Unit (ECU) Performance

C0558 Calibration Data Not Programmed

P0609 Vehicle Speed Output Circuit 2

P0856 Traction Control Torque Request Circuit

P1644 Traction Control Delivered Torque Output Circuit

P1689 Traction Control Delivered Torque Output Circuit