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 MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1411 (DTC INDEX)AUTOMATIC TRANSMISSION (ALLISON LCT 1000) DTCS
2006 Chevrolet Suburban K2500, 6.0 U
Automatic Transmission (ALLISON LCT 1000) DTCS
2006 Chevrolet Suburban K2500, 6.0 USECTION Automatic Transmission (ALLISON LCT 1000) DTCS
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
AUTOMATIC TRANSMISSION (ALLISON LCT 1000) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC P0218 | TRANSMISSION FLUID OVER TEMPERATURE |
| DTC P0500 | VEHICLE SPEED SENSOR CIRCUIT |
| DTC P0561 | UNREALISTIC VARIATIONS IN VEHICLE SYSTEM VOLTAGE |
| DTC P0562 | SYSTEM VOLTAGE LOW |
| DTC P0563 | SYSTEM VOLTAGE HIGH |
| DTC P0700 | MIL ILLUMINATION REQUESTED |
| DTC P0701 | TRANSMISSION CONTROL SYSTEM PERFORMANCE |
| DTC P0703 | BRAKE SWITCH CIRCUIT |
| DTC P0708 | TRANSMISSION RANGE SENSOR CIRCUIT HIGH INPUT |
| DTC P0711 | TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT - PERFORMANCE |
| DTC P0712 | TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT - LOW INPUT (HIGH TEMPERATURE) |
| DTC P0713 | TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT - HIGH INPUT (LOW TEMPERATURE) |
| DTC P0716 | TURBINE SPEED SENSOR CIRCUIT - PERFORMANCE |
| DTC P0717 | TURBINE SPEED SENSOR CIRCUIT - NO SIGNAL |
| DTC P0721 | OUTPUT SPEED SENSOR CIRCUIT - PERFORMANCE |
| DTC P0722 | OUTPUT SPEED SENSOR CIRCUIT - NO SIGNAL |
| DTC P0726 | ENGINE SPEED SENSOR CIRCUIT - PERFORMANCE |
| DTC P0727 | ENGINE SPEED SENSOR CIRCUIT - NO SIGNAL |
| DTC P0731 | INCORRECT 1ST GEAR RATIO |
| DTC P0732 | INCORRECT 2ND GEAR RATIO |
| DTC P0733 | INCORRECT 3RD GEAR RATIO |
| DTC P0734 | INCORRECT 4TH GEAR RATIO |
| DTC P0735 | INCORRECT 5TH GEAR RATIO |
| DTC P0736 | INCORRECT REVERSE RATIO |
| DTC P0741 | TORQUE CONVERTER CLUTCH SYSTEM STUCK OFF |
| DTC P0742 | TORQUE CONVERTER CLUTCH SYSTEM STUCK ON |
| DTC P0743 | TORQUE CONVERTER CLUTCH - ELECTRICAL |
| DTC P0746 | SOLENOID "A" CONTROLLED CLUTCH STUCK OFF |
| DTC P0747 | SOLENOID "A" CONTROLLED CLUTCH STUCK ON |
| DTC P0748 | PRESSURE CONTROL SOLENOID "A" ELECTRICAL |
| DTC P0763 | SHIFT SOLENOID "C" ELECTRICAL |
| DTC P0768 | SHIFT SOLENOID "D" ELECTRICAL |
| DTC P0773 | SHIFT SOLENOID "E" ELECTRICAL |
| DTC P0776 | SOLENOID "B" CONTROLLED CLUTCH STUCK OFF |
| DTC P0777 | SOLENOID "B" CONTROLLED CLUTCH STUCK ON |
| DTC P0778 | PRESSURE CONTROL SOLENOID "B" ELECTRICAL |
| DTC P0836 | 4-WHEEL DRIVE LOW SWITCH CIRCUIT MALFUNCTION |
| DTC P0840 | PRESSURE SWITCH SOLENOID "C" CIRCUIT MALFUNCTION |
| DTC P0841 | PRESSURE SWITCH SOLENOID "C" CIRCUIT STUCK OPEN |
| DTC P0842 | PRESSURE SWITCH SOLENOID "C" CIRCUIT STUCK CLOSED |
| DTC P0843 | PRESSURE SWITCH SOLENOID "C" CIRCUIT HIGH |
| DTC P0845 | PRESSURE SWITCH SOLENOID "D" CIRCUIT MALFUNCTION |
| DTC P0846 | PRESSURE SWITCH SOLENOID "D" CIRCUIT STUCK OPEN |
| DTC P0847 | PRESSURE SWITCH SOLENOID "D" CIRCUIT STUCK CLOSED |
| DTC P0848 | PRESSURE SWITCH SOLENOID "D" CIRCUIT HIGH |
| DTC P0870 | PRESSURE SWITCH "E" CIRCUIT MALFUNCTION |
| DTC P0871 | PRESSURE SWITCH SOLENOID "E" CIRCUIT STUCK OPEN |
| DTC P0872 | PRESSURE SWITCH SOLENOID "E" CIRCUIT STUCK CLOSED |
| DTC P0873 | PRESSURE SWITCH SOLENOID "E" CIRCUIT HIGH |
| DTC P0875 | REVERSE PRESSURE SWITCH CIRCUIT MALFUNCTION |
| DTC P0876 | REVERSE PRESSURE SWITCH CIRCUIT STUCK OPEN |
| DTC P0880 | TCM POWER INPUT SIGNAL |
| DTC P1571 | TCS PWM CIRCUIT NO FREQUENCY (8.1L) |
| DTC P1688 | UNMANAGED ENGINE TORQUE DELIVERED TO TCM |
| DTC P1779 | ENGINE TORQUE DELIVERED TO TCM |
| DTC P2810 | PRESSURE CONTROL SHIFT SOLENOID G |
| DTC U2105 | CAN BUS PCM ERROR |
RENDER: 1.0x
NO RELATED
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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.