Mobile Digital Media System And Static In Satellite Radio Band - keywords digital noise part phatnoise radio satellite speaker static entertainment U2K UMS

This PI was superseded to add 07 model year. Please discard PIT3717.

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

Some customers with the Mobile Digital Media system (Phatnoise®) RPO option (UMS) may comment of a static or low frequency humming type noise coming from the radio speakers when using Satellite Radio. Engineering has determined some 06 and 07 MY vehicles with a Digital Radio Receiver (DRR) part number 10367164 may exhibit this concern.

Verify the DRR part number and replace with P/N 15125061 if needed. Refer to SI Document 992921 for the DRR setup.

Note:  The dealer will need the Satellite Radio ID and the GM 8 Digit Part Number of the DRR, prior to contacting the GM Technical Assistance Center (TAC). The radio ID and part number are found by selecting Module Information under DRR on the Tech 2®

Note:  Replacement parts are usually shipped out within 24 hours, and a pre-paid return package label will be included for returning the faulty part. By returning the faulty part, you will avoid a significant non-return core charge.

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.