Automatic Transmission; Fluid; Engine Air Filter Life System - GMC Cadillac CT5 2021 Manual

318 VEHICLE CARE
2. Press and hold the thumbwheel on
the steering wheel. When the
confirmation message displays,
select YES. The oil life will change
to 100%.
Be careful not to reset the oil life
display accidentally at any time
other than after the oil is changed.
It cannot be reset accurately until
the next oil change.
The oil life system can also be reset as
follows:
1. Using the DIC buttons, display
REMAINING OIL LIFE on the DIC.
See Driver Information Center (DIC)
(Base Level) 0 112 or
Driver Information Center (DIC)
(Uplevel) 0 115.
2. Fully press and release the
accelerator pedal three times
within five seconds.
If the CHANGE ENGINE OIL SOON
message is not on, the system is
reset.
The system is reset when the
CHANGE ENGINE OIL SOON message
is off.
If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not been reset. Repeat the
procedure.

Automatic Transmission

Fluid

How to Check Automatic
Transmission Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak occurs,
take the vehicle to your dealer and
have it repaired as soon as possible.
The vehicle is not equipped with a
transmission fluid level dipstick.
There is a special procedure for
checking and changing the
transmission fluid. Because this
procedure is difficult, this should be
done at the dealer. Contact your dealer
for additional information.
Caution
Use of the incorrect automatic
transmission fluid may damage the
vehicle, and the damage may not be
covered by the vehicle warranty.
Always use the correct automatic
transmission fluid. See
Recommended Fluids and Lubricants
0 391.
Change the fluid and filter at the
intervals listed in Maintenance
Schedule 0 381, and be sure to use the
fluid listed in Recommended Fluids and
Lubricants 0 391.
Engine Air Filter Life
System
If equipped, this feature provides the
engine air filter s remaining life and
best timing for a change. The timing
to change an engine air filter depends
on driving and environmental
conditions.