US8 and US9 Radio Intermittently Will Not Power Up -keywords cd clock display intermittent lock logic
| Subject: | US8 and US9 Radio Intermittently Will Not Power Up |
| Models: | 2005-2007 Buick Terraza |
| 2005-2006 Chevrolet Corvette |
| 2005-2007 Chevrolet Uplander |
| 2005-2007 Pontiac Montana SV6 |
This PI was superseded to update Recommendation/Instructions. Please discard PIC4010B.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Customers may report that when starting the vehicle, the radio will not turn on. Further questioning of the customer may indicate that the radio will come on anywhere from 30 seconds to 15 minutes later or if the ignition is cycled off then on again. This can be duplicated when customer has been driving the car with FOB one and the next start is with a different FOB usually number two. This is due to the radio software in Siemens radios and affects US8 (Single Disk MP3) and US9 (In Dash Six Disk MP3) radios only.
Recommendation/Instructions:
Replace the radio using local exchange center process. All exchange radios have been reflashed with software to correct this concern.
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.
