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For 1990-2009 cars only

Steering Wheel Controls Do Not Function Properly - keywords am band button controls down fm function HVAC inoperative mute radio scan seek setup steering SWC temperature tune up volume wheel xm

Subject:Steering Wheel Controls Do Not Function Properly

Models:2008 Buick LaCrosse and Allure (Canada Only)



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

The Steering Wheel Controls (SWC) operate the wrong functions.

Some common concerns are:

Pushing Vol Up causes the HVAC Temp LH Up

Pushing Band causes Scan Down

Pushing Mute causes Vol Up

Pushing Tune Up causes LH Temp Up

Pushing Tune Down causes Scan Up

Other combinations may be seen, but if the Radio SWC buttons are operating any HVAC function, the following recommendation should be performed.

Recommendation/Instructions:

Perform a Radio Setup in the Tech2 and select the appropriate RPO options.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.