GMC 1995 Jimmy Owner's Manual page 350

Parking Brake and Automatic Transmission PARK (P)
Mechanism Check
Park on a fairly steep hill, with the vehicle facing downhill. Keeping your
foot on the regular brake, set the parking brake.
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To check the parking brake: With the engine running and transmission
in NEUTRAL (N), slowly remove foot pressure from the regular brake
pedal. Do this until the vehicle is held by the parking brake only.
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To check the PARK (P) mechanism's holding ability: Shift to PARK
(P). Then release all brakes.
Lap and Shoulder Belts Condition and Operation
Inspect belt system, including: webbing, buckles, latch plates, retractors,
guide loops and anchors. Have a belt assembly replaced if the webbing has
been cut or otherwise damaged.
Part C: Periodic Maintenance Inspections
Listed below are inspections and services which should be performed at
least twice a year (for instance, each spring and fall). You should let your
GM dealer's service department or other qualified service center do these
jobs. Make sure any necessary repairs are completed at once.
Steering and Suspension Inspection
Inspect the front and rear suspension and steering system for damaged,
loose or missing parts, signs of wear, or lack of lubrication. Inspect power
steering lines and hoses for proper hookup, binding, leaks, cracks, chafing,
etc. (On vehicles equipped with manual steering gear, check for seal
leakage.) Lubricate the steering linkage.
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