Is this the correct steps to check the NAG1 oil level? (Assuming the engine is warmed up to operating temperature)
1. Set emergency brake.
2. Chock wheels.
3. Shift thru the gears
4. Shift to Drive
5. Remove dip stick tube cap
6. Insert dip stick and check oil level.
Thanks,
Bill
From the '03 service manual:
"STANDARD PROCEDURE - CHECK OIL LEVEL
(1) Verify that the vehicle is parked on a level surface.
(2) Remove locking pin (1) (Fig. 136). Remove the
plate of the locking pin with a suitable tool and press
out the pin remaining in the cap downwards.
(3) Remove cap (2).
WARNING: Risk of accident from vehicle starting off
by itself when engine running. Risk of injury from
contusions and burns if you insert your hands into
the engine when it is started or when it is running.
Secure vehicle to prevent it from moving off by
itself. Wear properly fastened and close-fitting work
clothes. Do not touch hot or rotating parts.
Fig. 136 Remove Dipstick Tube Cap Lock
1 - LOCKING PIN
2 - TUBE CAP
3 - DIPSTICK TUBE
21 - 102 AUTOMATIC TRANSMISSION - NAG1 VA
FLUID AND FILTER (Continued)
(4) Actuate the service brake. Start engine and let
it run at idle speed in selector lever position 9P9.
(5) Shift through the transmission modes several
times with the vehicle stationary and the engine
idling
(6) Warm up the transmission, wait at least 2 minutes
and check the oil level with the engine running.
Push the Oil Dipstick 8863A in up to the stop on the
electrohydraulic unit and pull out again, read off oil
level, repeat if necessary.
NOTE: The dipstick will protrude from the fill tube
approximately 75mm (3 inches) when installed.
(7) Check transmission oil temperature.
NOTE: The true transmission oil temperature can
only be read by a scan tool in REVERSE or any forward
gear position. (Refer to 21 - AUTOMATIC
TRANSMISSION- NAG1/TRANSMISSION TEMPERATURE
SENSOR/PARK-NEUTRAL SWITCH - OPERATION)
(8) The transmission Oil Dipstick 8863A has indicator
marks every 10mm. Determine the height of
the oil level on the dipstick and using the height, the
transmission temperature, and the Transmission
Fluid Graph (Fig. 137), determine if the transmission
oil level is correct.
(9) Add or remove oil as necessary and recheck the
oil level.
(10) Once the oil level is correct, install a new dipstick
tube cap (2) (Fig. 138) and lock pin (1)."
Note that the tranny should be in P(ark) and engine idling.