GMC 1995 Safari Owner's Manual page 313

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. Lubricate the steering linkage.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body near the exhaust
system. Look for broken, damaged, missing or out-of-position parts as well
as open seams, holes, loose connections, or other conditions which could
cause a heat build-up in the floor pan or could let exhaust fumes into the
vehicle. See "Engine Exhaust'' in the Index.
Accelerator Confrol System
Lubricate all pivot points with engine oil, except the TBI throttle shaft. Do
not lubricate the cam pulley. Remove all external deposits from pulley. Do
not oil any accelerator or cruise control cables. Replace any cables that have
high effort or excessive wear.
Drive Axle Service
Check readfront axle fluid level and add as needed. Check constant velocity
joints and axle seals for leaking.
Transfer Case (All- Wheel Drive) Inspection
Every 12 months or at oil change intervals, check front axle and transfer
case and add lubricant when necessary. Oil the control lever pivot point and
all exposed control linkage. Check vent hose at transfer case for kinks and
proper installation.