GMC T-Series 1999, Owner'S Manual

Page: 282 / 344

Scheduled Maintenance (Except DURAMAX
t
DIESEL)
yellow blue
7-20
96,000 Miles (160 000 km)
j Engine oil and filter service. (3)(9)
j Check fluid levels (or every 3 months, whichever
occurs first). (1)(2)(6)
j Chassis lubrication service (or every 6 months,
whichever occurs first). (12)
j Clean air conditioner filter (or every month,
whichever occurs first). See “Air Conditioner Filter”
in the Index.
j Lubricate door hinge pins and rollers with engine oil.
j Wheel bearing (grease type) service (or every
24 months, whichever occurs first, and whenever
hubs are removed). (23)
j Wheels and tires service. (15)
j Hydraulic brake service (or every 6 months,
whichever occurs first). (7)
j Hydraulic parking brake service (or every 6 months,
whichever occurs first). (8)
j Engine drive belts service (or every 12 months,
whichever occurs first). (18)
j Clutch pedal free travel service. (10)
j Throttle linkage service. (19)
j Thermostatically controlled engine cooling fan
service. (4)(20)
j Shields and undercab insulation service. (4)(5)(21)
j Air intake system service (or every 24 months,
whichever occurs first). (4)(5)(24)
j Thermostatically controlled air cleaner service (or
every 24 months, whichever occurs first).
(3)(4)(25)
[
j Evaporative Control System Service (if equipped)
(or every 24 months, whichever occurs first).
(3)(26)
[
j Rear axle air shift motor service. (11)
j Check air brake relay valve operation and check for
leaks (or every month, or every 300 hours,
whichever occurs first).
j Air brake chamber service (or every 2 months,
whichever occurs first). (41)
j Trailer brake hand control valve service (or every
3 months, or 900 hours, whichever occurs first). (42)