Market Segment:
Full-size SUV market, aimed at families and individuals requiring substantial passenger and cargo capacity.
Competitors:
Ford Bronco, Chevrolet K1500 Blazer (in its then-SUV form), Dodge Ramcharger.
Key Selling Points:
Body-on-frame construction for durability, robust V8 engine options, substantial towing and hauling capability, spacious interior.
Manual Advantage:
Offers licensed, OE-derived information, providing accuracy and depth superior to generic repair guides. Convenient digital access replaces cumbersome printed manuals.
Manual Type:
Service and Repair Manual
Format:
Online Software / Digital Access
Access Duration:
1 Year (with option for extension)
Device Compatibility:
PC, Laptop, Smartphone, Tablet (via web browser)
Powertrain:
Engine mechanical, fuel system, cooling system, lubrication system, exhaust system, ignition system, emissions control
Drivetrain:
Automatic transmission, transfer case (4WD), drive shafts, axles, differentials
Suspension Steering:
Front suspension, rear suspension, steering system, power steering
Brakes:
Front disc brakes, rear drum brakes, anti-lock braking system (ABS) if equipped, hydraulic system, parking brake
Electrical:
Battery, charging system, starting system, lighting, instrumentation, interior/exterior electrical components, wiring diagrams
HVAC:
Heating, ventilation, and air conditioning (HVAC) system components and service
Body:
Body panels, doors, windows, interior trim, exterior trim, chassis components
Maintenance:
Scheduled maintenance tasks, fluid checks and changes, filter replacements, lubrication, tune-ups
Troubleshooting:
Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides
Repair:
Step-by-step repair instructions for all major systems, component removal and installation
Diagnostics:
Diagnostic trouble codes (DTCs) and their meanings, diagnostic strategies, use of diagnostic tools
Depth:
Comprehensive; covers routine maintenance to complete engine and transmission overhauls. Includes detailed torque specifications, clearances, and assembly procedures.
File Format Details:
Proprietary web-based software, licensed content derived from OE (Original Equipment) materials.
Print Quality Notes:
Digital format, optimized for screen viewing. Printable pages are available.
Binding Type Notes:
Not applicable (digital format).
Paper Type Notes:
Not applicable (digital format).
Engine Description:
5.7L (350 ci) V8 OHV Tuned Port Injection (TPI)
Horsepower L05:
210 HP @ 4000 RPM
Torque L05:
300 lb-ft @ 2400 RPM
Fuel Delivery:
Tuned Port Injection (TPI)
Fuel Type:
Unleaded gasoline
Optional Engine Code:
L03
Optional Engine Description:
5.0L (305 ci) V8 Throttle Body Injection (TBI)
Optional Engine Horsepower:
178 HP @ 4000 RPM
Optional Engine Torque:
245 lb-ft @ 2400 RPM
Wheelbase:
131.5 inches (3338 mm)
Length:
211.9 inches (5382 mm)
Width:
79.5 inches (2019 mm)
Height:
73.7 inches (1872 mm)
Curb Weight Approx:
4,800 - 5,100 lbs (2177 - 2313 kg)
Gross Vehicle Weight Rating Gvw:
6,400 - 7,000 lbs (2903 - 3175 kg)
Cargo Volume Behind 3Rd Seat:
Approx. 46.1 cu ft
Cargo Volume Behind 2Nd Seat:
Approx. 89.7 cu ft
Cargo Volume Behind 1St Seat:
Approx. 131.4 cu ft
NHTSA Ratings:
Information for this specific year and model is not readily available in a standardized format comparable to modern crash test ratings. Likely received ratings consistent with other large SUVs of the era.
ABS:
Optional Anti-lock Braking System (ABS) on rear wheels, later models offered 4-wheel ABS.
Seat Belts:
Three-point seat belts for front occupants, lap belts for rear occupants.
Rollover Protection:
Body-on-frame construction provides inherent structural integrity in rollovers compared to unibody vehicles.
Oil Change Interval:
Every 3,000 miles or 3 months, whichever comes first (typical for the era).
Transmission Fluid Change:
Every 30,000 miles or 24 months (typical).
Spark Plug Replacement:
TBI: 30,000 miles; TPI: 60,000 miles (typical).
Engine Oil Specification:
API Service SG or SH, SAE 5W-30 or 10W-30 (depending on climate)
Engine Oil Capacity:
5.0 quarts (4.7 liters) with filter for 5.0L/5.7L V8 (L03/L05)
Transmission Fluid Specification:
Dexron-III (or equivalent)
Transmission Fluid Capacity:
Approx. 4.0 quarts (3.8 liters) dry fill, 12.0 quarts (11.4 liters) total capacity for 4L60E.
Coolant Specification:
Ethylene glycol-based coolant, 50/50 mix with distilled water.
Power Steering Fluid:
GM Power Steering Fluid (or Dexron-III equivalent)
Common Wear Items:
Ball joints, tie rod ends, wheel bearings, exhaust system components, radiator, water pump. Electrical gremlins can occur with age.
Tpi System:
Tuned Port Injection systems can be sensitive to fuel pressure issues and sensor failures, impacting performance and fuel economy.
Automatic Transmission:
The 4L60E transmission, while generally robust, can develop issues related to solenoid packs and torque converter clutch operation if not properly maintained.
Gm Truck Division:
GMC has a long-standing history in the truck and commercial vehicle market, known for robust and durable vehicles.
Suburban Lineage:
The Suburban is one of the longest-running nameplates in automotive history, dating back to 1935. The 1991 model is part of the GMT400 platform introduction, which represented a significant modernization for GM's trucks and SUVs.
Manufacturing Location:
Likely produced in Janesville, Wisconsin, USA.
