Diagnostic Fault Information
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| PAL B+ | - | 1 | - | - |
| Left Audio Signal (+) | 2 | 3 | 2 | - |
| Left Audio Signal (-) | 2 | 3 | 2 | - |
| Right Audio Signal (+) | 4 | 5 | 4 | - |
| Right Audio Signal (-) | 4 | 5 | 4 | - |
| PAL Ground | - | 1 | - | - |
| 1. PAL module inoperative. No Communication with PAL or DRR, XM can not be selected from radio. BCM DTC U2172, Radio DTC U0194, LED on PAL does not illuminate. 2. No sound from left speakers when PAL or XM™ is sourced on radio. 3. No sound from left speakers when only PAL is sourced on radio. 4. No sound from right speakers when PAL or XM™ is sourced on radio. 5. No sound from right speakers when only PAL is sourced on radio. |
||||