2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2128
Control Module References (See: Testing and Inspection/Programming and Relearning) for FPCM replacement, setup, and programming.
2ML70 - Automatic Transmission
DTC P0562 or P0563
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0562
- System Voltage Low
DTC P0563
- System Voltage High
Circuit/System Description
The transmission control module continuously monitors the system voltage on the Ignition voltage circuits. The transmission control module is
located within the control solenoid valve assembly and is not serviced separately. Lower than normal voltage may be inadequate to operate the
transmission control solenoids properly. Improper solenoid operation may cause erratic transmission operation, which may result in internal
transmission damage.
Conditions for Running the DTC
P0562
The engine is running.
P0563
Ignition voltage has been greater than 12 V for 1 second this ignition cycle.
Conditions for Setting the DTC
P0562
The TCM detects system voltage is less than 10 V for 5 out of 6 seconds.
P0563
The TCM detects system voltage is greater than 18 V for 5 out of 6 seconds.
Action Taken When the DTC Sets
DTCs P0562 and P0563 are Type C DTCs.
Conditions for Clearing the DTC
DTCs P0562 and P0563 are Type C DTCs.
Diagnostic Aids
* Observe the driver information center messaging that would indicate the electrical system requires service.
* Inspect for the following conditions:
- Loose or damaged battery terminals
- Loose or corroded connections at the transmission
- Loose or corroded connections at the accessory power module
