Sierra Denali RWD V8-6.2L (2009)
A revised calibration has been developed to address these conditions. Technicians are to reprogram the audio amplifier using TIS2WEB and selecting "
Amplifier Software Update (RPO STZ or Y91 only)". Refer to the Audio Amplifier Programming and Setup procedure in SI for more information. As
always, make sure your Tech 2(R) is updated with the latest software version.
Warranty Information
For vehicles repaired under warranty, use the table above.
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