🏷️ Basic Information Identification Make: GMC Model: Sierra Year: 1994 Generation Generation Code: GMT400 Generation Years: 1988-1998 👋 Introduction Market Position Segment: Full-size pickup truck. Target Audience: Owners of 1994 GMC Sierra trucks, seeking operational and basic maintenance guidance. Competitive Analysis Competitors: Ford F-Series, Dodge Ram. Key Features Vehicle Identity: A durable and capable full-size pickup truck, part of GM's GMT400 platform, known for its body-on-frame construction and wide range of configurations. Manual Purpose Purpose: To inform the owner about the safe and proper operation, maintenance, and features of their 1994 GMC Sierra. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive owner's information for the 1994 GMC Sierra. Page Count Estimated Page Count: 150-250 (typical for the era and scope) Manual Type Type: Owner's Manual Language Language: English Format Format: Digital PDF (Instant Download) 📖 Manual Coverage Systems Covered Interior Systems: Instrument cluster, entertainment systems (radio/cassette), climate controls (HVAC), locks and security, seating and safety restraints. Exterior Systems: Lights (headlights, taillights, interior lighting), driver controls. Powertrain Systems: Engine compartment overview, engine oil, fuel information, air filter(s), battery. Procedures Included Driving Procedures: General driving operation, understanding vehicle controls. Maintenance Procedures: Checking engine oil, battery maintenance, air filter replacement (basic). Safety Procedures: Understanding safety restraints, reporting safety defects (U.S. specific). Cleaning Procedures: Vehicle cleaning recommendations. Technical Depth Depth: Owner-level operation, basic maintenance, and safety information. Not a service or repair manual. 📊 Manual Specifications File Format File Type: PDF Readability: Requires PDF reader software (e.g., Adobe Acrobat Reader). Print Quality Quality: Digital reproduction of original factory manual, quality dependent on scan accuracy. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Options: 4.3L (262 cid) V6, 5.0L (305 cid) V8, 5.7L (350 cid) V8. Base Engine Displacement: 4.3 Liters Base Engine Configuration: Vortec V6 Optional Engine Displacement 1: 5.0 Liters Optional Engine Displacement 2: 5.7 Liters Performance Base Engine Horsepower Est: 160 hp @ 4000 rpm Base Engine Torque Est: 235 lb-ft @ 2800 rpm Fuel System Fuel Delivery: Throttle Body Injection (TBI) or Multi-Port Fuel Injection (MPFI) depending on engine. Fuel Information Fuel Type: Unleaded Gasoline Engine Compartment Layout: Front engine, rear-wheel drive or four-wheel drive. 🔧 Transmission Standard Transmission Type: 4-speed automatic (e.g., 4L60E for V8, 4L60 for V6) Optional Transmission Options: 5-speed manual (e.g., NV3500 for lighter duty applications). Features Drivetrain: Rear-Wheel Drive (RWD) or Four-Wheel Drive (4WD) available. 📐 Dimensions Exterior Body Styles: Regular Cab, Extended Cab, Crew Cab (less common in '94). Wheelbase Options: Multiple wheelbases available depending on cab and bed configuration (e.g., 118.2" for standard cab, 131.6" for long bed). Cargo Bed Lengths: Short bed (6.5 ft), Long bed (8 ft). Weights Gross Vehicle Weight Rating Gvwr: Varies by configuration, typically from 5,600 lbs to 8,600 lbs. 🛡️ Safety Features Ratings NHTSA Ratings: Not readily available in a comparable format to modern vehicles. Focus on passive safety features. Active Features Braking System: Front disc, rear drum brakes. Optional rear ABS on some models. Passive Features Restraint Systems: Lap and shoulder belts for front occupants, lap belts for rear occupants (if equipped). Driver and passenger airbags not standard until later in the generation or model year updates, but potentially available as an option on some 1994 models. Structural Features: Body-on-frame construction, reinforced safety cage. 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM stereo with cassette player. Optional CD player or premium sound systems may have been available. Display: Analog gauges for speedometer, tachometer, fuel, temperature, oil pressure. Warning lights for various systems. Driver Assistance ABS: Anti-lock Braking System (ABS) was an option, typically for the rear wheels. Cruise Control: Available as an option on most trims. Connectivity Connectivity Options: No integrated smartphone connectivity or Bluetooth. Aftermarket head units were common upgrades. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles or 3-6 months, depending on driving conditions (as per manual recommendations). Tune Up Interval Est: Spark plugs, filters, and other tune-up components generally recommended around 30,000-60,000 miles, though specific recommendations vary by engine. Transmission Fluid Change: Recommended every 30,000-50,000 miles for automatic transmissions, or as per severe service schedule. Fluid Specifications Engine Oil Viscosity: Commonly SAE 5W-30 or 10W-30, depending on ambient temperature (refer to manual for specific engine). Engine Oil Type: API Certified, SG or SH service category for gasoline engines. Coolant Type: Ethylene Glycol based, typically a green coolant (long-life variations may differ). Transmission Fluid Type: Dexron-III (or equivalent) for automatic transmissions. Brake Fluid Type: DOT 3 brake fluid. Refill Capacities Engine Oil Capacity: Approximately 4.5-5.5 quarts (4.3-5.2 liters) with filter, depending on engine. Coolant Capacity: Approximately 14-17 quarts (13.2-16.1 liters), depending on engine and cooling system configuration. Fuel Tank Capacity: Typically 25-32 gallons (95-121 liters), depending on configuration. Part Numbers Air Filter Example Part Number: AC Delco A242C (for 4.3L V6) -...