APPLIES TO: This simplified TAC system wiring diagram applies to the following vehicles:
- 4.2L Buick Rainier: 2006, 2007.
You can find the 2004-2005 4.2L Buick Rainier TAC system wiring diagram here:
The following tutorial will help you test the electronic throttle body:
Electronic Throttle Body Terminal Pin Out Chart
| Pin | Wire Color | Description |
|---|---|---|
| A | Dark green (DK GRN) | TPS 1 Signal |
| B | Light blue with black stripe (LT BLU/BLK) | 5 Volts (TPS 2) |
| C | Black (BLK) | Ground (TPS 1) |
| D | Purple (PPL) | TPS 2 Signal |
| E | Yellow (YEL) | Throttle Actuator Motor Control |
| F | Brown (BRN) | Throttle Actuator Motor Control |
| G | Grey (GRY) | 5 Volts (TPS 1) |
| H | Black with white stripe (BLK/WHT) | Ground (TPS 2) |
More 4.2L Buick Rainier Tutorials
You can find a complete list of 4.2L Buick Rainier tutorials and wiring diagrams here:
Here's a list of articles you'll find there:
- Blown Head Gasket Tests (2002-2004 4.2L Oldsmobile Bravada, 2004-2007 4.2L Buick Rainier).
- Electronic Throttle Body Tests (2002-2004 4.2L Oldsmobile Bravada, 2004-2007 4.2L Buick Rainier).
- How To Test Engine Compression (2002-2004 4.2L Oldsmobile Bravada, 2004-2007 4.2L Buick Rainier).
- How To Test The Ignition Coils (2002-2004 4.2L Oldsmobile Bravada, 2004-2007 4.2L Buick Rainier) .
If this info really saved the day, buy me a beer!
