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.
2015 Chevrolet Cruze Eco, Automatic TransFACTORY OEM SERVICE PROCEDURE
Automatic Transmission - 6T40 - Diagnostic Trouble Codes
AUTOMATIC TRANSMISSION - 6T40 - DIAGNOSTIC TROUBLE CODES
| DTC | Description |
|---|---|
| DTC P0601, P0603, P0604 or P062F | Control Module |
| DTC P0634 | Control Module Overtemperature |
| DTC P0658 or P0659 | Actuator High Control Circuit Group 1 |
| DTC P0667, P0668 or P0669 | Control Module Temperature Sensor |
| DTC P06AC, P06AD or P06AE | Control Module Power Up Temperature Sensor |
| DTC P0711-P0713 | Transmission Fluid Temperature Sensor |
| DTC P0716, P0717, P07BF or P07C0 | Input Speed Sensor |
| DTC P071D | Transmission Sport Mode Switch Circuit |
| DTC P0722, P0723, P077C or P077D | Output Speed Sensor Circuit |
| DTC P0741 or P0742 | Torque Converter Clutch (TCC) System |
| DTC P0751 or P0752 | Shift Solenoid Valve 1 Performance |
| DTC P0776 or P0777 | Pressure Control Solenoid Valve 2 |
| DTC P0796 or P0797 | Pressure Control Solenoid Valve 3 |
| DTC P0815, P0816 or P0826 | Upshift/Downshift Switch Circuit |
| DTC P0850-P0852 | Park/Neutral Position Switch Circuit |
| DTC P0961-P0963 | Line Pressure Control Solenoid Valve |
| DTC P0965-P0967 | Pressure Control Solenoid Valve 2 |
| DTC P0969-P0971 | Pressure Control Solenoid Valve 3 |
| DTC P0973 or P0974 | Shift Solenoid Valve 1 Control Circuit |
| DTC P1761 | Up and Down Shift Switch |
| DTC P182E or P1915 | Internal Mode Switch |
| DTC P1876 | Up and Down Shift Enable Switch Circuit |
| DTC P2714 or P2715 | Pressure Control Solenoid Valve 4 |
| DTC P2719-P2721 | Pressure Control Solenoid Valve 4 |
| DTC P2723 or P2724 | Pressure Control Solenoid Valve 5 |
| DTC P2728-P2730 | Pressure Control Solenoid Valve 5 |
| DTC P2762, P2763 or P2764 | Torque Converter Clutch (TCC) Pressure Control Solenoid Valve |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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