GMC 1986 P-Truck Service Manual page 32

SECTION A -S C H E D U L E D MAINTENANCE SERVICES FOR YOUR 1986 VEHICLE WITH HEAVY DUTY EMISSIONS - OVER 8600 GVWR (CALIFORNIA ONLY)
The services shown in this schedule up to 60,000 miles (100 000 km)
are io se performed after 60,000 miles (100 000 km) ai the same intervals.
Item
No. Service
1 Engine Oil Change *
Oil Filter Change *
2 Chassis Lubrication - Every 4 Months or
3 Engine Idle Speed Adjustment * - At First 4 Months or,
Then Every 12 Months or
4 Cooling System Service *
5 Air Cleaner Element Replacement ▲ *
6 Front Wheel Bearing Repack
7 Transmission Service - See Explanation for
Service Intervals in Section B
8 PCV System Inspection * - Every 12 Months or
9 Fuel Filter Replacement * - Every 12 Months or
10 Carburetor Choke and Hoses Inspection *
- Every 24 Months or
11 Carburetor or Throttle Body Mounting Bolt
Torque Check * — Every 12 Months or
12 Vacuum Advance System Inspection * - Every 24 Months or
13 Spark Plugs *
14 Wire Service *
15 EGR System Check * - Every 36 Months or
16 Engine Timing Check and Distributor Check * ▲
17 Fuel Tank, Cap and Lines Inspection * - Every 24 Months or
18 Early Fuel Evaporation System Inspection *
- Every 24 Months or
19 Thermostatically Controlled Air Cleaner Inspection * ▲
- Every 12 Months or
20 Engine Accessory Drive Belts Inspection *
21 Evaporative Control System Inspection * - Every 24 Months or
22 Shields and Underhood Insulation Inspection ▲ ■
23 Air Intake System Inspection A
24 Thermostatically Controlled Engine Cooling Fan Check
- Every 12 Months or
25 Manifold Heat Valve Check ▲ * — Every 12 Months or
26 Idle Stop Solenoid Check * - At First 4 Months or
Then Every 12 Months or
27 Throttle Return Control Check * — Every 12 Months or
28 Engine Idle Mixture Adjustment (4.8 L only) *
— Every 24 Months or
29 Governor Check ▲ ■ - Every 48 Months or
FOOTNOTES:
* An Emission Control Service
▲ Also a Noise Emission Control Service
■ Applicable only to vehicles sold in the United States
8
o Maintenance Schedule 1
m maintenance Schedule 2
Miles (000) 3 6 9 12 15 18
Kilometers (000) 5 10 15 20 25 30
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The maintenance services contained in Maintenance Schedule 1 and 2 are based on the assumption that your
vehicle will be used as designed:
• To carry passengers and cargo within the lim its shown on the tire placard located on the edge ot the driver s
door
« On reasonable road surfaces within legal driving lim its .* On leaded gasoline___________________________
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35 40 45 50 55 60 65 70
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