Drive Motor/Generator Control Module (Dmcm) Cooling System; Control Module (Dmcm); Coolant Surge Tank; Pressure Cap - GMC Chevrolet Tahoe 2012 Manual

Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2012
If the fluid level is low, add only
enough fluid to bring the level
into the HOT band. It does not
take much fluid, generally less
than 0.5 Liter (1 Pint). Do not
overfill.
6. If the fluid level is in the
acceptable range, push the
dipstick back in all the way.
Consistency of Readings
Always check the fluid level at
least twice using the procedure
described previously. Consistency
(repeatable readings) is important
to maintaining proper fluid level.
If readings are still inconsistent,
contact your dealer.
Drive Motor/Generator

Control Module (DMCM)

Coolant Surge Tank

Pressure Cap

See Engine Compartment Overview
on page 10 4 for more information
on location.
The Drive Motor/Generator Control
Module (DMCM) coolant surge tank
pressure cap must be fully installed
on the hybrid coolant surge tank.
Notice: If the pressure cap is
not tightly installed, coolant loss
and possible damage to the
Drive Motor/Generator Control
Module (DMCM) may occur.
Be sure the cap is properly and
tightly secured.
Black plate (9,1)
Vehicle Care
Drive Motor/Generator
Control Module (DMCM)
Cooling System
In addition to the regular cooling
system, the vehicle also has a
cooling system for the DMCM
system. This system is serviced
differently than the vehicle's main
cooling system. The DMCM cooling
system includes the DMCM coolant
surge tank, DMCM surge tank
pressure cap, DMCM cooling
pumps, hybrid cooling radiator and
the Drive Motor/Generator Control
Module (DMCM). The DMCM
cooling system uses a 50/50
®
pre-mixed DEX-COOL coolant and
deionized water available at your
dealer. See Engine Coolant and
Cooling System in the owner
manual for more information.
10-9