Test Description
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step tests B+ voltage.
- 4: This step tests the status of the charging system.
DTC P0563
| Step | Action | Value | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Automatic Transmission Controls Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Automatic Transmission? | - | Go to Step 2 | Go to Diagnostic System Check - Automatic Transmission |
| 2 |
IMPORTANT:
Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records for reference. The Clear Info function will erase the data.
|
B+ | Go to Step 3 | Go to Step 4 |
| 3 | Start the engine and observe the charge indicator on the instrument cluster. Refer to Charging System Test (CS/AD/SI Generators)
in Engine Electrical. Does the charge indicator display voltage higher than specified value? |
18 V | Go to Step 5 | Go to Step 6 |
| 4 | Replace the battery, or resolve the battery condition. Refer to Battery Inspection/Test (Non-HP2)
or Battery Inspection/Test (HP2)
in Engine Electrical. Did you resolve the battery condition or replace the battery? |
- | Go to Step 6 | - |
| 5 | Repair the charging system. Refer to Charging System Test (CS/AD/SI Generators)
or Generator Replacement (4.3L Engine)
or Generator Replacement (4.8L, 5.3L, and 6.0L Engines)
or Generator Replacement (6.6L (LB7) Engine)
or Generator Replacement (6.6L (LLY) Engine)Generator Replacement (8.1L Engine)
in Engine Electrical. Did you complete the repair? |
- | Go to Step 6 | - |
| 6 | Perform the following procedure in order to verify the repair:
Has the test run and passed? |
- | System OK | Go to Step 1 |