Pontiac Vibe 2003 Owner's Manual page 271

Wait at least 30 minutes before checking the transaxle
fluid level if you have been driving:
D
When outside temperatures are above 90
D
At high speed for quite a while.
D
--
In heavy traffic especially in hot weather.
D
While pulling a trailer.
To get the right reading, the fluid should be at normal
operating temperature, which is 158
_ _
(70 C to 80 C).
Get the vehicle warmed up by driving about 15 miles
(24 km) when outside temperatures are above 50
_
(10 C). If it's colder than 50
have to drive longer.
_ _
F (32 C).
_ _
F to 176 F
_
F
_ _
F (10 C), you may
Checking the Fluid Level
Prepare your vehicle as follows:
D
Park your vehicle on a level place. Keep the engine
running.
D
With the parking brake applied, place the shift lever
in PARK (P).
D
With your foot on the brake pedal, move the shift
lever through each gear range, pausing for about
three seconds in each range. Then, position the shift
lever in PARK (P).
D
Let the engine run at idle for three to five minutes.
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