Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009UPLANDER LT, 3.9 MREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESDATA COMMUNICATIONSDIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2009 Chevrolet Uplander LT, 3.9 M
Diagnostic Code Index
2009 Chevrolet Uplander LT, 3.9 MSECTION Diagnostic Code Index
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1000 | B1000 00: Electronic Control Unit (ECU) Performance No Additional Information Available B1000 04: Side Object Detection Performance - RAM Failure B1000 08: Electronic Control Unit (ECU) Performance Signal Invalid B1000 12: Electronic Control Unit (ECU) Performance Below Minimum Threshold B1000 31: Electronic Control Unit (ECU) General Checksum Problem B1000 33: Electronic Control Unit (ECU) Performance Special Memory Failure B1000 34: Electronic Control Unit (ECU) Performance RAM Integrity B1000 35: Electronic Control Unit (ECU) Performance ROM Integrity B1000 36: Electronic Control Unit (ECU) Performance EEPROM Integrity B1000 37: Electronic Control Unit (ECU) Performance Watchdog / Safety Failure B1000 38: Electronic Control Unit (ECU) Performance Supervision Software Failure B1000 39: Electronic Control Unit (ECU) Performance Internal Electronic Failure B1000 43: Electronic Control Unit (ECU) Performance EEPROM Error B1000 46: Side Object Detection Performance - Invalid Configuration B1000 56: Electronic Control Unit (ECU) Performance Allowable Number of Transitions/ Events Exceeded B1000 57: Electronic Control Unit (ECU) Performance B1000 73: Electronic Control Unit (ECU) Performance Parity Error B1000 0F: Electronic Control Unit (ECU) Performance Erratic B1000 2B: Electronic Control Unit (ECU) Performance Missing Reference B1000 2C: Electronic Control Unit Performance Reserved B1000 3B: Electronic Control Unit (ECU) Performance Internal Self Test Failed B1000 3C: Electronic Control Unit (ECU) Performance Internal Communications Failure B1000 4A: Side Object Detection Performance - PROM Checksum Error B1000 F0: Side Object Detection RF Transmit Chain Failed B1000 F1: Side Object Detection RF Receive Chain Failed B1000 F2: Side Object Detection Frequency Calibration Failure B1000 F3: Side Object Detection Inter-Processor Communication Failed |
| DTC B1001 | B1001 00: Option Configuration Error B1001 45: Option Configuration Error Variant Not Programmed B1001 46: Option Configuration Error B1001 4B: Option Configuration Error Calibration Not Learned |
| DTC B1004 | B1004: Keep Alive Memory (KAM) Reset |
| DTC B1007 | B1007: EEPROM Write Error |
| DTC B1009 | B1009: EEPROM Checksum Mismatch |
| DTC B1013 | B1013: Calibration Read Only Memory (ROM) Checksum Error |
| DTC B1014 | B1014: Program Read Only Memory (ROM) Checksum Error |
| DTC B1390 | B1390: Device Voltage Reference Input Circuit |
| DTC C0550 | C0550: ECU Malfunction |
| DTC U0073 | U0073: High Speed Communication Bus |
| DTC U0100-U0299 | U0100 00: Lost Communication With Engine/Powertrain Control Module (ECM/PCM) U0101 00: Lost Communication With Transmission Control Module (TCM) U0104 00: Lost Communication With Cruise Control Module U0121 00: Lost Communication With Electronic Brake Control Module (EBCM) U0140 00: Lost Communication With Body Control Module (BCM) U0151 00: Lost Communication With Sensing and Diagnostic Module (SDM) U0155 00: Lost Communication With Instrument Panel Cluster (IPC) Control Module U0184 00: Lost Communication With Radio |
| DTC U1000 and U1255 | U1000: Class 2 Data Link U1255: Loss of Class 2 Communication |
| DTC U1001-U1254 | U1016: Lost Communication With ECM/PCM U1017: Lost Communication With Engine Control Module U1024: Lost Communication With Transmission Control Module U1026: Lost Communication With ATC/TCCM U1040: Lost Communication With Electronic Brake Control Module U1041: Lost Communication With Electronic Brake Control Module U1064: Lost Communication With Body Control Module (BCM) U1088: Lost Communication With Sensing and Diagnostic Module (SDM) U1096: Loss of IPC Communications U1097: Loss of DIC Communications U1098: Loss of HUD Communications U1099: Loss of HUD Communications U1111: Lost Communication With Chime Module U1128: Loss of IRC Communications U1129: Loss of AMP Communications U1133: Lost Communication With DVD Player U1137: Lost Communication With Digital Radio Receiver U1144: Loss of PHN Communications U1147: Lost Communication With Onstar U1151: Lost Communication With Onstar U1152: Lost Communications With HVAC Control System U1153: Lost Communication With Climate Control Panel U1160: Loss of DDM Communications U1161: Loss of PDM Serial Data U1162: Lost Communications With Convenience Control System U1166: Loss of MSM Communications U1167: Lost Communications With Rear Seat Audio/Rear HVAC U1173: Lost Communications With Moveable Roof Module U1176: Loss of RFA Communications U1192: Lost Communication With Vehicle Theft Deterrent |
| DTC U1300, U1301, or U1305 | U1300: Class 2 Data Link Low U1301: Class 2 Data Link High U1305: Class 2 Data Link High or Low |
| DTC U2100 | U2100: Controller Area Network (CAN) Bus Communication |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.