Chevrolet 2003 Venture Owner's Manual page 352

Checking the Fluid Level
Prepare your vehicle as follows:
e
Park your vehicle on a level place. Keep the engine
e
e
e
running.
With the parking brake applied, place the shift lever
in PARK (P).
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).
Let the engine run at idle for three to five minutes.
Then, without shutting off the engine, follow these steps:
The dipstick is located toward the back of the engine
compartment, next to the brake master cylinder
reservoir.
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