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GMC P Service Manual
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
General Information
Oa-4 General Information
Manual
Manual
Manual
Manual
Metric Fasteners
Fastener Strength Identification
Prevailing Torque Fasteners
Six Lobed Socket Head Fasteners
Anticorrosion Treatment
Graphic Symbols
Electrostatic Discharge
Common Abbreviations
RPO Listing (Regular Production Option
Heating and Air Conditioning
Subject Page
1A-2 Heating
R/V and G Series Heaters - Description
Blower and Air Inlet Assembly
Heater Distributor Assembly
Insufficient Heat Diagnosis
Heater Circuit Diagnosis
Diagnosis of the Heater System
R/V Series Heater - On-Vehicle Service
Blower Motor Replacement
Heater Hose Routing
Heater Distributor Case and Core Replacement
Control Assembly Replacement
Control Cable Replacement
Cable Adjustment
Blower Switch Replacement
Resistor Replacement
Vent Replacement
R/V Series Auxiliary Heater
Description
R/V Series Auxiliary Heater - On-Vehicle Service
Blower Motor Replacement
Heater Core Replacement
Resistor Replacement
Auxiliary Blower Switch Replacement
Coolant-Control Valve Replacement
G-Van Heater - On-Vehicle Service
Blower Motor Replacement
Heater Hose Routing
Heater Distributor Case and Core Replacement
Distributor and Defroster Duct Replacement
Control Assembly And/Or Blower Switch Replacement
Control Cable Replacement
Cable Adjustment
Resistor Replacement
Vent Replacement
G>Van Auxiliary Heater
Description
G-Van Auxiliary Heater - On-Vehicle Service
Blower Motor Replacement
Heater Core Replacement
Coolant-Control Valve Replacement
Resistor Replacement
Specifications
Subject Page
Description
CCOT A/C System
Rear Interior Roof Mounted Systems (Suburban & G-Van)
System Components
Periodic Maintenance and Servicing
System Operation - R/V & G-Van
Functional Test - R/V & G-Van
Refrigerant-12 Operating Characteristics
System Components, Temperature and Pressure Relationships
Refrigerant and Oil Capacity
Handling Refrlgerant-12
Handling Refrigerant Lines and Fittings
Maintaining Chemical Stability
Refrigerant System Diagnosis
Insufficient Cooling "Quick-Check" Procedure
System Performance Test
Testing the Refrigerant System
Leak Testing the Refrigerant System
Pressure Sensing Switch
Compressor Cut-Out Switches
Electrical/Vacuum Trouble Diagnosis
Operational Test
Vacuum System Diagnosis
R/V and G-Van
Evacuating and Charging Procedures
Discharging, Evacuating, Adding Oil and Charging Procedures
Discharging the System
Refrigerant Oil Distribution
Evacuating and Charging
Gage Calibration
Vacuum System Check
Charging Station Method
Disposable Can or Multi-Can Method
Refrigerant Drum Method
Charging the System
Accumulator Assembly
Specific Component Diagnosis
Compressor
Condenser
Expansion Valve
Evaporator
Refrigerant Line Restrictions
On-Vehicle Service
Refrigerant-11 Flushing Procedure
Filter Installation
Compressor Replacement (R
Compressor Replacement (G-Van)
A/C System - - R/V Series
Condenser Replacement
Accumulator Replacement
Blower Assembly Replacement
Evaporator Core Replacement
Orifice (Expansion Tube) Replacement
Defroster Duct and Heater Core Replacement
Actuator - Plenum Side Vent Replacement
Plenum Valve Replacement
Control Assembly Replacement
Temperature Door Cable Adjustment
Blower Switch Replacement
Vacuum Tank Replacement
Blower Motor Resistor Replacement
Blower Motor Relay Replacement
Fuse Replacement
Vacuum Line Replacement - Engine Compartment
Vacuum Line Replacement - Dash
Refrigerant-12 Hose Replacement
Rear Interior Roof Mounted System - Suburban
Rear Duct Replacement
Blower Motor Resistor Replacement
Blower Motor Assembly Replacement
Expansion Valve Replacement
Evaporator Core Replacement
Blower Motor Switch Replacement
Fuse Replacement
A/C System - G-Van
Condenser Replacement
Accumulator Replacement
Heater Core Replacement
Orifice (Expansion Tube) Replacement
Blower Motor Insulation (W/Diesel) Replacement
Evaporator Core (W/Diesel) Replacement
Evaporator Core Replacement (Except Diesel)
Blower Motor Replacement
Control Assembly Replacement
Temperature Door Cable Adjustment
Blower Switch Replacement
Selector Replacement
Resistor Replacement
Blower Motor Relay Replacement
A/C Right Duct Replacement
A/C Left Duct Replacement
Defroster Duct Replacement
Temperature Door Cable Replacement
Vacuum Tank Replacement
Vacuum Lines - Engine Compartment
Refrigerant-12 Hose Routing
Rear Duct Replacement
Rear Air Deflector Replacement
Blower Motor Resistor Replacement
Blower Motor Assembly Replacement
Expansion Valve Replacement
Evaporator Core Replacement
Blower Motor Switch Replacement
Fuse Replacement
A/C System - P-Truck
Specifications
Compressors
Torque Specifications
A/C Electrical
Refrigerant-12/Refrigerant Oil Capacities
Special Tools
2A-2 Frame and Bumpers
R/V and P-Model Frames
Description
Diagnosis of the Frame
Minimizing Frame Service
Checking Frame Alignment
Straightening Frames
Repairing Cracks
Welding
G-Model Underbody
Description
Underbody Alignment
R/V Model Bumpers
Front Bumper Replacement
Rear Bumper Replacement (Utility Vehicle and Suburban)
Rear Bumper Replacement (Regular Cab, Bonus Cab, and Crew Cab)
Rear Step Bumper Replacement
Rear Bumper License Plate Bracket Replacement
Dead Weight Trailer Hitch Replacement (Utility Vehicle and Suburban)
Weight Distribution Hitch Replacement (Suburban Only)
Weight Distribution Hitch Replacement (Utility Vehicle Only)
P-Model Bumpers
Front Bumper Replacement (with RPO FS3 Front Axle)
G-Model Bumpers
Front Bumper Replacement
Rear Bumper Replacement
Rear License Plate Bracket Replacement
Dead Weight Trailer Hitch Replacement
Weight Distribution Hitch Replacement
Specifications
R/V Models
Hood Replacement
Spring Assembly Replacement
Hood Hinge Replacement
Primary Hood Latch Replacement
Secondary Hood Latch and Spring Replacement
Hood Release Cable Replacement
Hood Ornament Replacement
Cowl Vent Grille Replacement
Grille and Molding Replacement
Front Fender Replacement
Wheelhouse Panel Replacement
Rear Fender Replacement
Radiator Support Replacement
Sheet Metal Unit Replacement
Sheet Metal Adjustments
Noise Shields
G-Models
Hood Replacement
Hood Hinge Replacement
Primary Hood Latch Replacement
Secondary Hood Latch and Spring Replacement
Hood Release Cable Replacement
Cowl Vent Grille Replacement
Grille Replacement
Front End Sheet Metal Cross Panel Replacement
Sheet Metal Vertical Support Replacement
Front End Panel Replacement
Noise Shields
Cab Mounts
Cab Mount Replacement
Anti-Corrosion Treatment
Sheet Metal Repair
Specifications
Special Tools
3A-2 Front End Alignment
Description
Definition of Terms
Diagnosis of Front End Alignment
On-Vehicle Service
Inspection
Front End Alignment Requirements
Alignment Adjustments
Specifications
On-Vehicle Service
Idler Arm Inspection
Idler Arm Adjustment - P30 Motorhome
Idler Arm Replacement
Relay Rod Replacement
Pitman Arm Replacement
Steering Shock Absorber Inspection
Steering Shock Absorber Replacement
Tie Rod Replacement - R, G, P20, and P30 Models Except Motorhome
Tie Rod Replacement - V and P30 FS3 Models
Connecting Rod Replacement - V and P30 FS3 Models
Connecting Rod Replacement - P30 Motorhome
Specifications
Special Tools
Description
Integral Power Steering Gear
Hydraulic Pumps
Diagnosis of Power Steering System
Fluid Leak Check
Power Steering System Test
On-Vehicle Service
Maintenance
Pump Belt Tension Adjustment
Fluid Level Adjustment
Bleeding the Power Steering System
Flushing the Power Steering System
Steering Gear High-Point Centering
Power Steering Gear Replacement
Pitman Shaft Seal Replacement
Steering Gear Adjustments
Power Steering Pump Replacement
Power Steering Oil Coolers
Power Steering Hoses
Specifications
Special Tools
Description
Diagnosis of the Steering Column
On-Vehicle Service (All Models)
Inspection
Steering Wheel Replacement
Flexible Coupling Replacement
Intermediate Shaft Replacement
On-Vehicle Service (R/V and G-Models)
G-Model Steering Column Replacement
Turn Signal Switch Replacement
Lock Cylinder Replacement
Tone Alarm Switch Replacement
Ignition Switch Replacement
Standard Steering Column Unit Repair (R/V and G-Models)
Standard Steering Column Lower Bearing Adjustment
Tilt Steering Column Unit Repair (R/V and G-Models)
On-Vehicle Service (P30 Motorhome Models)
Turn Signal Switch Replacement
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R,V,G,P Models j
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Chapters
Section Oa General Information
5
Section 1A Heating
57
Ib-1 Section 1B Air Conditioning
85
Section 2A Frame and Bumpers
161
2B-1 Section 2B Sheet Metal
185
Section 3A Front End Alignment
215
3B1-1 Section 3B1 Steering Linkage
223
3B3-1 Section 3B3 Power Steering
239
3B4-1 Section 3B4 Steering Column
277
3C-1 Section 3C Front Suspension
327
3D-1 SectionD Rear Suspension
391
3E-1 Section 3E Wheels and Tires
403
Propeller Shaft 4A-1 Section 4A Propeller Shaft
423
4B1-1 Section 4B1 Rear Axle
437
4C-1 Section 4C Front Driving Axle
463
Section 5A Hydraulic Brakes
473
5A1-1 Section 5A1 Hydraulic Brake Booster Systems
505
5A2-1 Section 5A2 Hydraulic Foundation Brakes
515
6-1 Section 6 Engine
531
6A3-1 Section 6A3 4.3 Liter V6
557
6A4-1 Section 6A4 Small Block
589
6A4-38 Small Block Specifications (Cont.)
626
6A6-1 Section 6A6 6.2L Diesel
665
6A7-1 Section 6A7 4.8 Liter L6
707
6B1-1 Section 6B1 Engine Cooling
739
6B2-1 Section 6B2 Radiator
783
6C1-1 Section 6C1 Carburetors
829
6C2-1 Section 6C2 Diesel Fuel Injection
867
6D-1 Section 6D Engine Electrical
889
Section 6E1 Carburetor Emissions
971
6E2-1 Section 6E2 Diesel Emissions
1021
6F-1 Section 6F Exhaust
1087
6H-1 Section 6H Vacuum Pumps
1097
7A-2 Transmission Contents (Cont.)
1106
7B-1 Section 7B Manual Transmission
1185
7C-1 Section 7C Clutch
1197
208 Transfer Case 7D2-1 Section 7D2 208 Transfer Case
1219
Section 8A Cab Electrical
1229
8B-1 Section 8B Chassis Electrical
1277
8C-1 Section 8C Instrument Panel and Gages
1317
9-1 Section 9 Accessories
1335
Section 10A1 Doors
1373
10A2-1 Section 10A2 Seats
1455
Table of Contents
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