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.DBβ LIVE
HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 720 (CRUISE CONTROL SYSTEM)COMPONENT LOCATORCRUISE CONTROL CONNECTOR END VIEWS
1999 GMC Forward Control 5.7 R, Automatic
Cruise Control Connector End Views
1999 GMC Forward Control 5.7 R, AutomaticSECTION Cruise Control Connector End Views
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.
Clutch Pedal Position (CPP) Switch Terminal Identification Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | GRY | 48 | CPP Switch Signal |
| B | PNK | 339 | Ignition 1 Voltage |
Throttle Actuator Control (TAC) Module Terminal Identification Connector End View - C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | GRY | 1273 | Low Reference |
| B | PPL | 1272 | Low Reference |
| C | LT BLU | 1162 | APP Sensor 2 Signal |
| D | TAN | 1274 | 5 Volt Reference |
| E | YEL/BLK | 1275 | 5 Volt Reference |
| F | DK BLU | 1161 | APP Sensor 1 Signal |
| G | LT BLU | 1276 | 5 Volt Reference |
| H | - | - | Not Used |
| J | BRN | 1271 | Low Reference |
| K | DK GRN | 1163 | APP Sensor 3 Signal |
Throttle Actuator Control (TAC) Module Terminal Identification Connector End View - C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | DK BLU | 417 | TP Sensor 1 Signal |
| 2 | DK GRN | 485 | 5 Volt Reference |
| 3 | PPL | 486 | Low Reference |
| 4 | DK BLU | 84 | Cruise Control Set/Coast Switch Signal |
| 5 | GRY/BLK | 87 | Cruise Control Resume/Accel Switch Signal |
| 6 | LT BLU | 20 | Stop Lamp Supply Voltage |
| 7 | PNK | 539 | Ignition 1 Voltage |
| 8 | BRN | 582 | TAC Motor Control - 2 |
| 9 | YEL/BLK | 487 | 5 Volt Reference |
| 10 | WHT | 484 | Low Reference |
| 11 | PNK | 427 | TP Sensor 2 Signal |
| 12 | TAN | 800 | UART Serial Data Primary |
| 13 | ORN/BLK | 1061 | UART Serial Data Secondary |
| 14 | GRY | 397 | Cruise Control On Signal |
| 15 | BLK/WHT | 451 | Ground |
| 16 | YEL | 581 | TAC Motor Control - 1 |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.