1998 GMC C1500 Pickup REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

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1998 GMC C1500 Pickup CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1998 GMC C1500 Pickup car and truck repair procedures including GMC engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your GMC C1500 Pickup automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for GMC mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 1998 GMC C1500 Pickup vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

Air Bag System Precautions -> General Motors Corp. -> Disarming -> 1990 -> 1990-93 -> 1990-95 -> 1990-97 -> 1991 -> 1991-93 -> 1991-94 -> 1991-95 -> 1992-93 -> 1992-99 -> 1993-2002 -> 1993-94 -> 1993-98 -> 1994 -> 1994-2002 -> 1994-95 -> 1994-96 -> 1994-98 -> 1995-2002 -> 1995-96 -> 1995-97 -> 1995-98 -> 1995-99 -> 1996 -> 1996-2001 -> 1996-97 -> 1997 -> 1997-2002 -> 1997-98 -> 1997-99 -> 1998-2000 -> 1998-2002 -> 1998-99 -> 1999 -> 1999-2000 -> 1999-2001 -> 1999-2002 -> 2000-02 -> 2001-02 -> 2002 -> 2003 -> 2003-04 -> 2003-04 Except Malibu Maxx -> Achieva & Skylark -> Alero -> Astro & Safari -> Aurora -> Avalanche -> Aveo -> Aztek & Rendezvous -> Beretta & Corsica -> Blazer, Jimmy, Sonoma & S-10 -> Bonneville, Eighty-Eight, LeSabre, LSS, Ninety-Eight & Regency -> Bravada, Envoy, Rainier, SSR & TrailBlazer -> C/K Series -> Camaro & Firebird -> Canyon & Colorado -> Caprice, Custom Cruiser & Roadmaster -> Catera -> Cavalier & Sunfire -> Century -> Corvette -> Coupe -> CTS -> Cutlass -> Cutlass Ciera & Cruiser -> Cutlass Supreme -> DeVille -> Eldorado -> Escalade -> Express, G Series & Savana -> Fleetwood -> Grand Am -> Grand Prix & Intrigue -> Impala -> ION -> L-Series -> Light Trucks & Vans -> Lumina -> Lumina APV, Montana, Silhouette, Trans Sport & Venture -> Malibu -> Malibu Maxx -> Metro -> Monte Carlo -> Park Avenue -> Passenger Cars -> Prizm -> Reatta, Toronado & Trofeo -> Regal -> Riviera -> S-Series -> Sedan -> Seville -> Sierra & Silverado -> SRX -> Storm -> Suburban, Tahoe, Yukon & Yukon XL -> Tracker -> Vibe -> VUE -> XLR -> Zone 1 -> Zone 10 -> Zone 12 -> Zone 2 -> Zone 3 -> Zone 4 -> Zone 5 -> Zone 6 -> Zone 7 -> Zone 8 -> Zone 9 -> Zones 1 & 7 -> Zones 2 & 6 -> Zones 5 & 9 -> Zones 7 & 9
Vehicle: 1998 GMC C1500 Pickup 5.7 V8 GAS

Passenger Cars

The Sensing and Diagnostic Module (SDM) can maintain enough voltage to cause air bag deployment for up to 10 minutes after the ignition is turned Off and the battery is disconnected. Servicing the Supplemental air bag (SIR) system during this period may result in accidental deployment and personal injury.

Achieva & Skylark
1994-96
  • Ensure front wheels are in straight-ahead position.
  • Turn ignition switch to LOCK position.
  • Remove AIR BAG fuse from fuse block.
  • On 1995 models, remove lefthand sound insulator panel to ac...

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BRAKE SERVICE PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

Anti-lock Brakes -> Kelsey-Hayes -> Diagnosis & Testing -> 1997 Astro -> 1997 C & K Series -> 1997 G-Series -> 1997 P-Series -> 1997 S & T Series -> 1997-99 -> 1997-99 Except 1999 Sierra & Silverado -> 1997-99 G Van & P Series -> 1998 Astro -> 1998 C & K Series -> 1998 G-Series -> 1998 P-Series -> 1998 S & T Series -> 1999 Astro -> 1999 C & K Series Except Sierra & Silverado -> 1999 G-Series -> 1999 P-Series -> 1999 S & T Series -> 1999 Sierra & Silverado -> 2000 Astro -> 2000 C & K Series except Sierra, Silverado, Suburban, Tahoe & Yukon -> 2000 G-Series -> 2000 S & T Series -> 2000 Sierra -> 2000 Silverado -> 2000 Suburban -> 2000 Tahoe -> 2000 Yukon -> 2000-01 -> 2000-01 G Van -> 2001 Astro -> 2001 C & K Series -> 2001 G-Series -> 2001 S & T Series -> Accessing Diagnostic Trouble Codes -> Astro, Safari & S & T Series -> C & K Series -> Clearing Diagnostic Trouble Codes -> Connector Pin ID -> Diagnostic Process -> Diagnostic Tests -> Diagnostic Trouble Code Interpretation -> Enhanced Diagnostics -> G Van & P Series -> Intermittents & Poor Connections -> Temperature Vs. Resistance -> Wiring Diagrams
Vehicle: 1998 GMC C1500 Pickup 5.7 V8 GAS

Accessing Diagnostic Trouble Codes

Diagnostic trouble codes (DTCs) can only be read by connecting a suitably programmed scan tool to the Data Link Connector (DLC) and following the tool manufacturer instructions.

Diagnostic Trouble Code Interpretation

Refer to Figs. and , for Diagnostic Trouble Code (DTC) interpretation.

Wiring Diagrams

Refer "Wiring Diagrams" in "Vehicle Systems"

Connector Pin ID

On 2000 S & T Series only, ensure correct anti-lock brake system connector pin identifications are used.

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Diagnostic Process

  • Inspect master cylinder reservoir fluid level and for possible fluid...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Component Locations -> 1999-06 Escalade, Avalanche & Denali, 1988-03 & C/K Pickup (Except 1999-03 Sierra & Silverado), 1992-06 Blazer, Jimmy, Hummer H2, SSR, Suburban, Yukon XL, Tahoe, Yukon, Bravada Gasoline Engines & 2004-06 Rainier, TrailBlazer & Envoy
Vehicle: 1998 GMC C1500 Pickup 4.3 V6 GAS

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

DRIVESHAFT, Replace -> Front -> Front, All Except NP8 Axle -> Front, NP8 Axle -> One Piece Driveshaft -> Rear -> Three Piece Driveshaft -> Two Piece Driveshaft
Vehicle: 1998 GMC C1500 Pickup 5.0 V8 GAS

Front

Front, All Except NP8 Axle
  • Raise and support vehicle.
  • Remove front differential carrier shield, if used.
  • Reference mark relationship of propeller shaft to front axle and transfer case flange.
  • Remove bolts and retainers from front axle.
  • Remove bolts and retainers from transfer case.
  • Remove propeller shaft. When removing propeller shaft, do not attempt to remove shaft by pounding on yoke ears or using a tool between yoke and universal joint. If propeller shaft is removed by using such means, injection joints may fracture and lead to premature failure of joint.
  • Compress propeller...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

Alternator, Replace
Vehicle: 1998 GMC C1500 Pickup 5.0 V8 GAS

  • Disconnect battery ground cable.
  • Remove air inlet duct, if required.
  • Disconnect terminal plug and battery lead connections from back of alternator.
  • Remove upper fan shroud mounting bolts and fan shroud.
  • Remove accessory drive belt using suitable 3/8 i...

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MAINTENANCE LAMP RESET PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

General Motors Corp./Saturn Trucks -> Service Four Wheel Drive (4WD) System Warning Lamp ->
Vehicle: 1998 GMC C1500 Pickup 5.0 V8 GAS

This lamp should light for approximately 6-8 seconds when the ignition is turned On as a bulb check. If the ...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 1998 GMC C1500 Pickup 5.7 V8 GAS

Inlet

  • Drain cooling system into a suitable container.
  • Reposition heater core inlet hose clamp at thermostat housing crossover assembly.
  • Remove hose from thermostat housing crossover assembly.
  • Reposition heater hose inlet clamp at heater core.
  • Remove heater inlet hose from heater core.
  • Remove hose from vehicle.
  • Reverse procedure to install.

Outlet

  • Drain cooling system into a suitable container.
  • Reposition heater hose outlet clamp at heater core.
  • Disconnect heater outlet hose ...

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SERPENTINE BELT SERVICE PROCEDURES FOR 1998 GMC C1500 Pickup AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 1998 GMC C1500 Pickup 4.3 V6 GAS

  • Rotate tensioner counterclockwise, using a 1/2 inch breaker bar with a socket placed on tensioner ...

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COMPONENT LOCATION DIAGRAMS FOR 1998 GMC C1500 Pickup AUTOMOBILES

Component location diagrams for most 1998 GMC C1500 Pickup cars and light trucks sold in the U.S. from 1990+.

A/C Components Diagram for 1998 GMC C1500 Pickup 4.3 V6 GASA/C Components Diagram for 1998 GMC C1500 Pickup 4.3 V6 GAS

Components on diagram:
  • Auxiliary HVAC Module
  • Blower Motor Connector
  • Heater Temperature Sensor
  • Auxiliary HVAC Harness Side
  • Headline Harness Side
    • Audio System Components Diagram for 1998 GMC C1500 Pickup 5.7 V8 GASAudio System Components Diagram for 1998 GMC C1500 Pickup 5.7 V8 GAS

    Components on diagram:
  • Right Hand Rear Speaker
  • Left Hand Rear Speaker

    • CLICK HERE TO GET FULL ACCESS TO 1998 GMC C1500 Pickup PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1998 GMC C1500 Pickup AUTOMOBILES

    OEM drawn wiring diagrams for most 1998 GMC C1500 Pickup cars and light trucks sold in the U.S.

    1998 GMC C1500 Pickup 4.3 V6 GAS Wiring Diagram1998 GMC C1500 Pickup 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Vehicle Control Module
  • Fuel Pump Relay
  • Fuel Pump Oil Pressure Switch And Sender
  • Fuel Pump and Sender
  • Fuel Tank Pressure Sensor
    • 1998 GMC C1500 Pickup 5.7 V8 GAS Wiring Diagram1998 GMC C1500 Pickup 5.7 V8 GAS Wiring Diagram

    Components on diagram:
  • Sensing And Diagnostic Module
  • Electronic Brake Control Module
  • Powertrain Control Module

    • CLICK HERE TO GET FULL ACCESS TO 1998 GMC C1500 Pickup WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1998 GMC C1500 Pickup AUTOMOBILES

    OEM TSB listings for most 1998 GMC C1500 Pickup cars and light trucks sold in the U.S. from 1985+.

    Document: Revised General Motors New Vehicle Tire Warranty Program
    Vehicle: 1998 GMC C1500 Pickup 5.7 V8 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
    • Document: New Website for AFIT, TPM, and VDR Updates
    Vehicle: 1998 GMC C1500 Pickup 5.7 V8 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids

    • CLICK HERE TO GET FULL ACCESS TO 1998 GMC C1500 Pickup TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1998 GMC C1500 Pickup AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1998 GMC C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1998 GMC C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1998 GMC C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1998 GMC C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO 1998 GMC C1500 Pickup SPECIFICATIONS DATA!

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