Diagnostic Fault Information
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. 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 |
|---|---|---|---|---|
| MISC IGN Fuse B+ Supply | 1 | 1 | - | - |
| Stop Lamp Switch 12 V Reference | B3445 00 | 3 | - | - |
| STOP LAMPS Fuse B+ Supply | 1 | 1 | - | - |
| Left Outage Detection Signal | 1 | 1 | 1 | - |
| Left Outage Detection Signal - European | 1 | 1 | 1 | - |
| Right Outage Detection Signal | 1 | 1 | 1 | - |
| Right Outage Detection Signal - European | 1 | 1 | 1 | - |
| Stop Lamp Switch Signal | - | 3 | 3 | - |
| Stop Lamp Switch Control | 1 | 1 | 1 | - |
| Center High Mounted Stop Lamp Control | B3884 00 | 2 | 2 | - |
| Left Lower Tail/Stop and Turn Signal Lamp Control | 1 | 1 | 1 | - |
| Left Upper Tail/Stop and Turn Lamp Control | 1 | 1 | 1 | - |
| Left Tail Lamp Control Circuit Board Control | 1 | 1 | 1 | - |
| Left Tail Lamp Control Circuit Board Control - European | 1 | 1 | 1 | - |
| Right Lower Tail/Stop and Turn Signal Lamp Control | 1 | 1 | 1 | - |
| Right Upper Tail/Stop and Turn Signal Lamp Control | 1 | 1 | 1 | - |
| Right Tail Lamp Control Circuit Board Control | 1 | 1 | 1 | - |
| Right Tail Lamp Control Circuit Board Control - European | 1 | 1 | 1 | - |
| Center High Mounted Stop Lamp Ground | - | 2 | - | - |
| Left Upper Tail/Stop and Turn Signal Lamp Ground | - | 1 | - | - |
| Left Tail Lamp Control Circuit Board Ground | - | 1 | - | - |
| Left Lower Tail/Stop and Turn Signal Lamp Ground | - | 1 | - | - |
| Left Tail/Stop Lamp Ground | - | 1 | - | - |
| Left Tail Lamp Circuit Board Ground - European | - | 1 | - | - |
| Right Lower Tail/Stop and Turn Signal Lamp Ground | - | 1 | - | - |
| Right Lower Tail/Stop and Turn Signal Lamp Ground | - | 1 | - | - |
| Right Tail Lamp Control Circuit Board Ground | - | 1 | - | - |
| Right Tail/Stop Lamp Ground | - | 1 | - | - |
| Right Tail Lamp Circuit Board - European | - | 1 | - | - |
| 1. Stop Lamps Malfunction 2. Center High Mounted Stop Lamp (CHMSL) Malfunction 3. Stop Lamp Switch Malfunction |
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