Circuit Description
WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
The transmission control module (TCM) continuously monitors the system voltage on the Ignition 1 and the battery voltage circuits. Lower than normal voltage may be inadequate to operate the transmission control solenoids properly. Improper solenoid operation may cause erratic transmission operation and tie-up conditions, which may result in internal damage.
When the TCM detects low voltage, DTC P0562 sets. DTC P0562 is a type C DTC.