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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 573 (AUTOMATIC TRANSMISSION - 4L60-E/4L65-E (INTRODUCTION, SERVICE & REPLACEMENT))COMPONENT LOCATORAUTOMATIC TRANSMISSION INLINE 20-WAY CONNECTOR END VIEW
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Automatic Transmission Inline 20-Way Connector End View
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Automatic Transmission Inline 20-Way Connector End View
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
AT Inline 20-way Connector, Transmission Side Terminal Identification
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 1222 | 1-2 Shift Solenoid Valve Control |
| B | YEL | 1223 | 2-3 Shift Solenoid Valve Control |
| C | PPL | 1228 | Pressure Control (PC) Solenoid Valve High Control |
| D | LT BLU | 1229 | PC Solenoid Valve Low Control |
| E | RED | 839 | Ignition 1 Voltage |
| F-K | - | - | Not Used |
| L | BRN | 1227 | Transmission Fluid Temperature (TFT) Sensor Signal |
| M | GRY | 452 | Low Reference |
| N | PNK | 1224 | TFP Switch Signal A |
| P | ORN | 1226 | TFP Switch Signal C |
| R | DK BLU | 1225 | TFP Switch Signal B |
| S | WHT | 687 | 3-2 Shift Solenoid Valve Assembly Control |
| T | BLK | 422 | Torque Converter Clutch Solenoid Valve Control |
| U | TAN | 418 | Torque Converter Clutch Pulse Width Modulation Solenoid Valve Control |
| V-W | - | - | Not Used |
AT Inline 20-way Connector, Engine Side Terminal Identification
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 1222 | 1-2 Shift Solenoid Valve Control |
| B | YEL/BLK | 1223 | 2-3 Shift Solenoid Valve Control |
| C | RED/BLK | 1228 | Pressure Control (PC) Solenoid Valve High Control |
| D | LT BLU/WHT | 1229 | PC Solenoid Valve Low Control |
| E | PNK | 339 | Ignition 1 Voltage |
| F-K | - | - | Not Used |
| L | YEL/BLK | 1227 | Transmission Fluid Temperature (TFT) Sensor Signal |
| M | ORN/BLK | 1057 | Low Reference |
| N | PNK | 1224 | TFP Switch Signal A |
| P | RED | 1226 | TFP Switch Signal C |
| R | DK BLU | 1225 | TFP Switch Signal B |
| S | WHT | 687 | 3-2 Shift Solenoid Valve Assembly Control |
| T | TAN/BLK | 422 | Torque Converter Clutch Solenoid Valve Control |
| U | BRN | 418 | Torque Converter Clutch Pulse Width Modulation Solenoid Valve Control |
| V-W | - | - | Not Used |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.