Positioning:
Premium online service and repair manual software for DIY enthusiasts and professional mechanics alike, offering official, licensed data.
Comparison To Print:
Superior to traditional printed manuals due to instant access, searchability, interactive diagrams, and ease of updating.
Licensing:
Officially licensed and derived from OE (Original Equipment) materials.
Cost Savings:
Enables significant cost savings compared to professional repair shop labor rates.
Primary Coverage:
2004 GMC Sonoma
Additional Coverage Notes:
Covers multiple trim levels and engine configurations for the 2004 model year.
Estimated Page Count:
Extensive (Software-based, not a fixed page count; equivalent to hundreds of printed pages)
Type:
Official Service and Repair Manual (Software)
Format:
Online Software (Accessible via Web Browser)
Access Duration:
1 Year (with option for renewal/discounted extensions)
Powertrain:
Engine (all variants), Fuel System, Cooling System, Exhaust System, Drivetrain (2WD/4WD, Transmissions)
Chassis:
Suspension (Front & Rear), Steering, Brakes (Front & Rear, ABS), Wheels & Tires
Electrical:
Starting & Charging System, Ignition System, Lighting System, Instrumentation, Body Electrical, Powertrain Control Module (PCM), Chassis Control Modules, HVAC Controls, Audio System, Safety Systems (Airbags, Seatbelts)
Body:
Body Structure, Exterior Body Panels, Interior Trim, Doors, Windows, Seats, HVAC System (Components, Refrigerant)
Maintenance:
Oil Changes, Filter Replacements, Fluid Checks & Top-offs, Tire Rotations, Spark Plug Service, Belt Inspection/Replacement
Diagnostics:
Troubleshooting Guides, Diagnostic Trouble Codes (DTCs), Electrical Schematics, Symptom-Based Diagnosis
Repair:
Component Removal & Installation (Engine, Transmission, Brakes, Suspension, Steering, HVAC, etc.), Engine Rebuild Procedures, Drivetrain Service, Electrical Component Repair
Technical Data:
Specifications, Tolerances, Torque Values, Wiring Diagrams, Exploded Views, Diagnostic Flowcharts
Depth:
Comprehensive (OE-derived, covering diagnostics, repair, and maintenance from basic to advanced)
Engine Options:
2.2L L4 (4-cylinder), 3.5L L4 (inline 4-cylinder, VIN G), 4.3L V6 (VIN X)
2.2L Engine Details:
GM Ecotec 2.2L OHV 4-cylinder. Power: Approx. 125 hp @ 5200 rpm, Torque: Approx. 135 lb-ft @ 3800 rpm.
3.5L Engine Details:
GM 3.5L Vortec HO 3500 LH6 L4 (often marketed as inline-4 due to placement). Power: Approx. 200 hp @ 5600 rpm, Torque: Approx. 225 lb-ft @ 3200 rpm.
4.3L Engine Details:
GM 4.3L Vortec 4300 (LV3) OHV V6. Power: Approx. 180-190 hp @ 4400-4600 rpm, Torque: Approx. 245-260 lb-ft @ 2800-3000 rpm.
Compression Ratio 4.3L:
9.1:1
Injection Type:
Multi-port Fuel Injection (MPI)
Recommended Fuel:
87 Octane (Regular Unleaded)
Manual Transmission:
4-speed Manual (NV1500) on some 2.2L and 4.3L models.
Automatic Transmission:
4-speed Automatic (4L60-E) standard on 3.5L and optional on 4.3L models. 5-speed Automatic (4L80-E) on some heavy-duty applications (less common for Sonoma).
Drivetrain Options:
Rear-Wheel Drive (RWD) and Available Four-Wheel Drive (4WD).
Transmission Fluid Spec 4L60-E:
Dexron-III H or Dexron-VI
Body Styles:
Regular Cab, Extended Cab.
Bed Lengths:
Short Bed (approx. 74 inches), Long Bed (approx. 79 inches).
Curb Weight Range:
Approx. 3,500 lbs to 4,200 lbs depending on configuration.
Towing Capacity:
Up to approximately 6,300 lbs (with proper equipment and engine).
NHTSA Front Impact Driver:
4/5 Stars (for 2004 models with dual airbags)
NHTSA Front Impact Passenger:
4/5 Stars (for 2004 models with dual airbags)
IIHS Side Impact:
Acceptable (for models tested with side airbags, if equipped)
ABS:
Standard Anti-lock Braking System (ABS) on rear wheels; optional on front wheels for 2WD, standard on all wheels for 4WD.
Airbags:
Standard front driver and passenger airbags.
Seatbelts:
Three-point seat belts with pretensioners.
Audio System:
Factory AM/FM stereo with CD player, optional premium sound system, and cassette player availability.
Display:
Basic digital or analog displays for radio presets, clock, and basic vehicle information.
Cruise Control:
Available cruise control system.
Phone Integration:
No factory integrated Bluetooth or smartphone connectivity; aftermarket solutions are required.
Oil Change Interval:
Every 7,500 miles or 6 months, whichever comes first, under normal driving conditions. Severe conditions may require more frequent changes.
Tire Rotation Interval:
Every 7,500 miles.
Air Filter Replacement:
Every 30,000 miles or as needed based on inspection.
Spark Plug Replacement 4.3L:
Platinum tipped plugs typically rated for 100,000 miles.
Engine Oil Capacity 4.3L:
4.5 quarts (with filter) of SAE 5W-30 synthetic blend or full synthetic oil.
Coolant Type:
GM-approved Long-Life (Orange or Dex-Cool equivalent), ethylene glycol-based. Capacity: Approx. 10.5 quarts (4.3L).
Heater Core Leaks:
Common on many GM vehicles of this era due to placement behind the dashboard, requiring significant labor to replace.
Clutch Master Cylinder Leaks:
Can develop leaks, affecting clutch operation on manual transmission models.
Ignition Switch Failure:
Potential for ignition switch failure, leading to no-start conditions or accessory issues.
ABS Sensor Failure:
ABS wheel speed sensors can fail, illuminating the ABS warning light.
Gm Truck Division:
GMC, as GM's truck-focused brand, has a long history of light-duty trucks and SUVs dating back to the early 20th century.
Sonoma Lineage:
The Sonoma was GMC's compact pickup truck, replacing the Syclone and Typhoon in spirit and position, and was a rebadged version of the Chevrolet S-10 Pickup. The 2004 model is part of the second generation (1998-2004), which received a significant facelift for 2004.
Production Period:
The GMC Sonoma was produced from 1991 to 2004.
Manufacturing Location:
United States (various GM assembly plants, e.g., Shreveport, Louisiana; Moraine, Ohio).
