GM Service Manual Online
For 1990-2009 cars only

Steering Wheel Control Switch

Resistance*

Voltage Range**

Low

High

VOL (UP)

1270

4.29

4.75

VOL (DOWN)

1564

3.61

4.12

PLAY

1912

3.07

3.51

MUTE

2387

2.50

2.98

SEEK (UP)

3102

1.97

2.41

SEEK (DOWN)

4282

1.42

1.88

AM/FM

6652

.874

1.33

PRESET

13632

.285

.779

* Approximate resistance between the steering wheel control switches connector terminal A and terminal C.

** Voltage measured from the radio connector terminal 14 (Pontiac) or terminal E6 (Buick) to ground, with the ignition ON and the battery fully charged.