TAC System Wiring Diagram (2006, 2007 4.2L Buick Rainier)

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:

• TAC System Wiring Diagram (2002-2004 4.2L Oldsmobile Bravada, 2004-2005 4.2L Buick Rainier).

The following tutorial will help you test the electronic throttle body:

• Electronic Throttle Body Tests (2002-2004 4.2L Oldsmobile Bravada, 2004-2007 4.2L Buick Rainier).

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:

• GM 4.2L Index of Articles.

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) .