Diagnostic Trouble Code (DTC) List. GMC Truck GMC C-Series Medium Duty Truck B7 1999

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Brakes 🢒 Antilock Brake System 🢒 Diagnostic Trouble Code (DTC) List

DTC	Definition
DTC C0221	DTC C0221 or C021 RF Wheel Speed Sensor Circuit Open
DTC C0222	DTC C0222 or C022 RF Wheel Speed Signal Missing
DTC C0223	DTC C0223 or C023 RF Wheel Speed Signal Erratic
DTC C0225	DTC C0225 or C025 LF Wheel Speed Sensor Circuit Open
DTC C0226	DTC C0226 or C026 LF Wheel Speed Signal Missing
DTC C0227	DTC C0227 or C027 LF Wheel Speed Signal Erratic
DTC C0231	DTC C0231 RR Wheel Speed Signal Circuit Open
DTC C0232	DTC C0232 RR Wheel Speed Signal Missing
DTC C0233	DTC C0233 RR Wheel Speed Signal Erratic
DTC C0235	DTC C0235 LR Wheel Speed Signal Circuit Open
DTC C0236	DTC C0236 LR Wheel Speed Signal Circuit Missing
DTC C0237	DTC C0237 LR Wheel Speed Signal Erratic
DTC C0238	DTC C0238 or C038 Wheel Speed Mismatch
DTC C0241	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0242	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0243	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0244	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0245	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0246	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0247	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0248	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0251	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0252	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0253	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0254	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0255	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0256	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0257	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0258	DTC C0241-C0258 EBCM Control Valve Circuit
DTC C0265	DTC C0265 or C0266 and C065 C066 EBCM Relay Circuit
DTC C0266	DTC C0265 or C0266 and C065 C066 EBCM Relay Circuit
DTC C0267	DTC C0267 or C0268 and C067 or C068 Pump Motor Circuit Open/Shorted
DTC C0268	DTC C0267 or C0268 and C067 or C068 Pump Motor Circuit Open/Shorted
DTC C0269	DTC C0269 or C0274 and C069 or C074 Excessive Dump/Isolation Time
DTC C0271	DTC C0271-C0273 or C071 or C073 EBCM Malfunction
DTC C0272	DTC C0271-C0273 or C071 or C073 EBCM Malfunction
DTC C0273	DTC C0271-C0273 or C071 or C073 EBCM Malfunction
DTC C0274	DTC C0269 or C0274 and C069 or C074 Excessive Dump/Isolation Time
DTC C0279	DTC C0279 Trim Level Not Selected
DTC C0281	DTC C0281 or C081 Brake Switch Circuit
DTC C0286	DTC C0286 or C086 ABS Indicator Lamp Circuit Shorted to B+