GM Service Manual Online
For 1990-2009 cars only

Each of the following service procedures require programming or setup procedures to be performed on the digital radio receiver (DRR).

Amplifier Replacement w/o UQ7 and Y91

There is no setup procedure that needs to be performed for the amplifier on this vehicle.

Amplifier Replacement w/UQ7 and Y91

If the amplifier is replaced, the new amplifier must have the setup procedure performed. Refer to Audio Amplifier Setup in Entertainment.