Years Covered:
1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Models Covered:
All GMC Sonoma Models, Trims, Engines, and Transmission Types
Estimated Page Count:
Varies by specific year and configuration, typically 1000+ pages for a comprehensive set.
Manual Type:
Comprehensive Workshop Service and Repair Manual
File Format:
PDF (Portable Document Format)
Engine Mechanical:
Complete engine overhaul, cylinder head, block, pistons, rings, crankshaft, camshaft, valve train, timing system, lubrication, cooling.
Engine Electrical:
Ignition system, starting system, charging system, fuel injection, engine control module (ECM), sensors, actuators, wiring diagrams.
Transmission Manual:
Clutch, gearbox assembly, internal components, shift mechanism, linkage, repair and overhaul.
Transmission Automatic:
Torque converter, transmission control module (TCM), valve body, internal components, fluid cooler, repair and overhaul.
Drivetrain:
Front/rear differentials, drive axles, CV joints, U-joints, propeller shafts, transfer case (if applicable).
Suspension And Steering:
Front/rear suspension components, shocks, struts, springs, control arms, ball joints, tie rods, steering gear, power steering system, alignment specifications.
Brakes:
Front/rear disc/drum brakes, brake pads, rotors, calipers, wheel cylinders, master cylinder, ABS system, hydraulic lines, bleeding procedures.
Electrical System:
Battery, alternator, starter, fuses, relays, lighting system, horn, wipers, power windows, power locks, interior/exterior electrical components, comprehensive wiring diagrams.
Body And Frame:
Body panels, doors, hood, tailgate, interior trim, seats, glass, weatherstripping, frame structure, structural repairs.
HVAC:
Air conditioning system, heater core, blower motor, evaporator, condenser, refrigerant, climate control system, diagnosis and repair.
Fuel System:
Fuel tank, fuel pump, fuel lines, fuel injectors, throttle body, fuel filter, evaporative emission control (EVAP) system.
Exhaust System:
Exhaust manifolds, catalytic converter, mufflers, pipes, hangers, emission control components.
Cooling System:
Radiator, water pump, thermostat, hoses, fan, coolant specifications, flushing and filling procedures.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, tire rotation, tune-ups.
Troubleshooting:
Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides.
Repair:
Step-by-step instructions for component replacement, adjustment, and overhaul.
Diagnostics:
Detailed diagnostic charts, scan tool usage, electrical system diagnostics, mechanical system diagnostics.
Disassembly And Assembly:
Complete instructions for disassembling and reassembling all major vehicle components and systems.
Depth Level:
Comprehensive from basic DIY maintenance to advanced engine and transmission rebuilds, including electrical diagnostics and bodywork.
Service Intervals General
Oil Change Interval:
Typically every 3,000-7,500 miles or 3-6 months, depending on oil type and driving conditions (consult specific year/engine for exact interval).
Tire Rotation:
Every 5,000-7,500 miles.
Transmission Fluid Change:
Every 30,000-100,000 miles, depending on transmission type and service history (check manual for specific recommendations).
Engine Oil Type:
API Certified, SAE 5W-30 recommended for most engines. Consult manual for specific viscosity based on temperature.
Engine Oil Capacity:
Approx. 4.5 quarts (4.3L V6) to 5.0 quarts (2.2L I4) with filter change.
Coolant Type:
GM Dex-Cool (Orange) or equivalent silicate-free engine coolant for aluminum engines. Check manual for correct type.
Transmission Fluid Type:
Dexron III (or Dexron VI for later models) Automatic Transmission Fluid (ATF). Manual transmission fluid varies by gearbox type.
Intake Manifold Gaskets V6:
Leaking intake manifold gaskets are a common issue on the 4.3L Vortec V6, especially on earlier models.
Heater Core:
Heater core leaks can occur, often indicated by a sweet smell inside the cabin or a foggy windshield.
Rear Main Seal Leaks:
Oil leaks from the rear main seal are not uncommon, particularly with higher mileage vehicles.
ABS Sensors:
ABS wheel speed sensors can fail, leading to ABS warning lights and system malfunction.