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How to Reset the Engine Oil Life
System
Reset the system whenever the engine
oil is changed so that the system can
calculate the next engine oil change.
To reset the system:
1. Using the vehicle information
screen controls on the right side of
the instrument cluster, display OIL
LIFE on the screen. See Vehicle
Information 0 135. When remaining
oil life is low, the CHANGE
ENGINE OIL SOON message will
appear on the display.
2. Touch RESET on the screen to
clear the CHANGE ENGINE OIL
SOON message and reset the oil life
at 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. Display OIL LIFE on the vehicle
information screen. See Vehicle
Information 0 135.
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
When to Check and Change
Automatic Transmission Fluid
If the vehicle has a diesel engine, see
the Duramax diesel supplement.
It is usually not necessary to check
the transmission fluid level. The only
reason for fluid loss is a transmission
leak or overheated transmission. This
vehicle is not equipped with a
transmission fluid level dipstick.
VEHICLE CARE
There is a special procedure for
checking and changing the
transmission fluid in these vehicles.
Because this procedure is difficult,
this should be done at the dealer.
Contact the dealer for additional
information or the procedure can be
found in the service manual. See
Publication Ordering Information 0 476.
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
0 461.
Change the fluid and filter at the
scheduled maintenance intervals
listed in Maintenance Schedule 0 452.
Be sure to use the transmission fluid
listed in Recommended Fluids and
Lubricants 0 461.
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