GM Service Manual Online
For 1990-2009 cars only

Audio From Lef Front Speaker Only - keywords inoperative no sound volume

Subject:Audio From Left Front Speaker Only

Models:2007-2009 Cadillac Escalade, Escalade ESV, Escalade EXT
2009 Chevrolet Avalanche LTZ, Silverado LTZ, Suburban LTZ, Tahoe LTZ
2007-2009 GMC Sierra Denali, Yukon Denali, Yukon Denali XL
2009 GMC Sierra SLT, Yukon SLT, Yukon XL SLT



This PI was superceded to add 2009 model year. Please discard PIT4163A.


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

Condition/Concern:

After replacing the amplifier you may notice that there is only sound playing from the left front speaker. This may be the result of the amplifier not being SPS programmed.

Recommendation/Instructions:

When an amplifier is replaced it must be SPS programmed using Tis2Web and the Tech 2.

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.