Positioning:
Comprehensive online service and repair solution for owners and independent repair facilities
Comparison To Print:
More convenient, accessible, and cost-effective than traditional printed manuals
Licensed Content:
Officially licensed and derived from OE (Original Equipment) materials
Access Duration:
One year of access with discounts for renewal
Device Compatibility:
Compatible with PC, laptop, smartphone, and tablet via internet browser
Engine:
Comprehensive engine diagnostics, overhaul, repair, and maintenance
Drivetrain:
Transfer case, drive shafts, axles, differentials, and hubs
Transmission:
Automatic transmission service, repair, and overhaul
Brakes:
Disc and drum brake systems, ABS diagnostics and repair
Suspension:
Independent front suspension, rear leaf spring suspension, components, and alignment
Steering:
Power steering system, steering column, and linkages
Electrical:
Wiring diagrams, component testing, charging system, starting system, lighting, and accessories
HVAC:
Heating, Ventilation, and Air Conditioning system service and repair
Body:
Exterior and interior body panels, doors, glass, and trim
Chassis:
Frame, body mounts, and underbody components
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication
Diagnostics:
Troubleshooting guides, symptom-based diagnostics, DTC interpretation
Repair:
Step-by-step repair instructions for all major systems
Rebuild:
Complete overhaul procedures for engine and transmission
Specifications:
Torque specifications, clearances, adjustments, and fluid capacities
Depth:
Factory-level technical information, suitable for DIY and professional mechanics
Engine Option 1:
5.7L V8 (350ci) Vortec (RPO L31)
Engine Option 2:
7.4L V8 (454ci) Vortec (RPO L29) - Optional
Horsepower L31:
255 hp @ 4600 rpm
Torque L31:
330 lb-ft @ 2800 rpm
Horsepower L29:
310 hp @ 4000 rpm
Torque L29:
455 lb-ft @ 3200 rpm
Fuel Delivery:
Multi-port Fuel Injection (MPFI)
Fuel Type:
Unleaded Gasoline
Ignition:
Distributorless Ignition System (DIS) with Coil-on-Plug (COP) for L31, Distributor Ignition for L29
Transmission Type L31:
4-speed automatic (4L60E)
Transmission Type L29:
4-speed automatic (4L80E)
Drive Modes:
Two-wheel drive (2WD) and Four-wheel drive (4WD) with Autotrac transfer case options
Fluid Type 4L60E:
Dexron-III (or equivalent)
Fluid Type 4L80E:
Dexron-III (or equivalent)
Overall Length:
219.3 inches
Overall Width:
77.5 inches
Overall Height:
77.0 inches
Curb Weight Approx:
5,300 - 5,800 lbs (depending on configuration)
Gross Vehicle Weight Rating Gvw:
7,200 - 7,400 lbs (depending on configuration)
Cargo Volume Behind 3Rd Row:
45.8 cu ft
Cargo Volume Behind 2Nd Row:
91.7 cu ft
Cargo Volume Behind 1St Row:
129.7 cu ft
NHTSA Frontal Driver Side Impact:
Not rated specifically for 1999, but previous models generally performed well.
IIHS Frontal Offset:
Acceptable for 1999 model year.
ABS:
Standard 4-wheel Anti-lock Braking System (ABS)
Airbags:
Driver and front passenger airbags
Seatbelts:
Front and rear seatbelts, driver's side seatbelt pretensioner
Oil Change Interval:
Every 3,000 to 7,500 miles or 6 months, depending on driving conditions and oil type.
Engine Coolant Flush:
Every 30,000 miles or 2 years
Transmission Fluid Change:
Every 30,000 to 60,000 miles, or as per manual recommendations.
Spark Plug Replacement:
Approximately 100,000 miles for the L31 Vortec ( iridium or platinum recommended)
Engine Oil Capacity L31:
5.5 quarts (5.2 L) with filter change (API Service SG, SH, or SJ, SAE 5W-30 recommended)
Engine Oil Capacity L29:
6.0 quarts (5.7 L) with filter change (API Service SG, SH, or SJ, SAE 10W-30 recommended)
Engine Coolant:
GM P/N 10529466 (Orange, 50/50 mix with distilled water)
Intake Manifold Gaskets:
Potential for coolant leaks due to gasket degradation
Rear Main Seal:
Possible oil leaks from the rear main crankshaft seal
Power Steering Pump:
Occasional leaks or whining from the power steering pump
Transmission Hard Shifting:
Can be related to valve body issues or solenoid problems in the 4L60E
Window Regulators:
Common failure point for power windows
Brand Focus:
GMC, a division of General Motors, focuses on trucks and utility vehicles.
Suburban Lineage:
The Suburban is one of the longest-running nameplates in automotive history, dating back to 1935.
Generation:
This 1999 model is part of the fourth generation (GMT400, 1992-2000) of the K-platform Suburban.
Manufacturing Location:
Janesville, Wisconsin, USA
