Target Audience:
Professional automotive technicians, dealership service departments, and experienced DIY enthusiasts.
Differentiation:
Vehicle-specific and factory-sourced, offering superior detail and accuracy compared to generic repair guides.
Uniqueness:
Provides the identical information used by authorized GMC service centers.
Convenience:
Single, easy-to-use PDF format, eliminating the need for multiple physical manuals.
Primary Coverage:
Complete Service and Repair
Model Variants Covered:
All models and configurations of the 2008 GMC Yukon XL
Estimated Page Count:
Varies by specific engine and drivetrain, but comprehensive for all configurations
Manual Classification:
Factory Service Manual (FSM) / Repair Manual
Powertrain:
Engine mechanical, control systems, fuel service, emission control, intake/exhaust, cooling, lubrication, ignition, starting, charging, automatic transmission, manual transmission, transfer case, drive shafts, differentials, axles.
Chassis:
Suspension, steering column, power steering, brakes (hydraulic, parking), tire and wheel.
Electrical And Body:
Air conditioning, supplemental restraint system (SRS), seat belts, engine immobilizer, cruise control, wipers and washers, door locks, meters, audio/visual systems, horn, windshield/glass/mirrors, instrument panel, seats, engine hood, doors, exterior/interior trim, general electrical, multiplex/CAN communication.
Diagnostic Procedures:
Troubleshooting guides, diagnostic trouble codes (DTCs), system analysis, electrical circuit tracing.
Repair Procedures:
Step-by-step repair instructions for all major vehicle systems, including component removal, installation, adjustment, and overhaul.
Maintenance Procedures:
Scheduled maintenance tasks, fluid changes, filter replacements, inspection procedures.
Depth Of Information:
Factory-level, comprehensive, A-Z coverage for technicians and advanced DIYers.
Searchability:
Searchable text content within the PDF
Printability:
Fully printable, allows for selective page printing
Image Resolution:
High-resolution for clear viewing and enlarged printing of diagrams and illustrations
Binding Style:
Digital (no physical binding, user prints as needed)
Paper Recommendation:
N/A (Digital format, user chooses paper type for printing)
Engine Options 2008 Yukon Xl:
Typically included the 5.3L V8 (RPO code LH6 or LY5) and optionally the 6.0L V8 (RPO code LQ4 or L76) for Denali models. The 6.2L V8 (RPO code L92) was also available on some Denali trims.
5.3L V8 Horsepower Approx:
Approximately 320-355 hp (depending on specific engine variant)
5.3L V8 Torque Approx:
Approximately 335-385 lb-ft (depending on specific engine variant)
Fuel Injection Type:
Sequential Fuel Injection (SFI)
Fuel Type:
Regular Unleaded Gasoline (minimum 87 octane recommended for 5.3L, 91 octane for 6.0L/6.2L)
Standard Transmission Type:
6-speed automatic transmission (RPO code MYD - 6L80E or MYC - 6L90E for heavy-duty models)
Optional Transmission Type:
None offered for 2008 Yukon XL in terms of manual transmission; all were automatic.
Transmission Features:
Electronically controlled, with manual mode (Driver Shift Control), tow/haul mode.
Overall Length Inches:
Approximately 222.4 inches
Overall Width Inches:
Approximately 79.1 inches
Overall Height Inches:
Approximately 77.0 inches
Curb Weight Lbs Approx:
Approximately 5,400 - 5,800 lbs (depending on configuration)
Gross Vehicle Weight Rating Gvwr Lbs Approx:
Approximately 7,000 - 7,200 lbs
Cargo Volume Behind 3Rd Row Cu Ft:
Approximately 45.8 cu ft
Cargo Volume Behind 2Nd Row Cu Ft:
Approximately 97.1 cu ft
Cargo Volume Behind 1St Row Cu Ft:
Approximately 137.4 cu ft
NHTSA Rollover Resistance Rating:
4 out of 5 stars (check specific model year for exact ratings)
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Standard Traction Control System (TCS)
Stabili Trak:
Standard StabiliTrak (Electronic Stability Control) with Pro-Trak
Airbags:
Frontal airbags for driver and front passenger, side-impact curtain airbags for all rows.
Seat Belts:
3-point seat belts in all seating positions, front seat pretensioners, load limiters.
Child Seat Anchors:
LATCH (Lower Anchors and Tethers for CHildren) system.
Infotainment System:
Optional navigation system, Bose premium audio system, rear-seat entertainment system were available.
Connectivity:
XM Satellite Radio, OnStar telematics system.
Parking Assistance:
Optional rear parking assist sensors.
Climate Control:
Dual-zone or tri-zone automatic climate control was available.
Remote Start:
Optional remote vehicle start system.
Power Features:
Power-adjustable pedals, power liftgate, power-folding third-row seats (on some trims).
Oil Change Interval:
Typically every 7,500 miles or 6 months, whichever comes first, with regular oil filter changes. Consult manual for specific recommendations based on driving conditions.
Tire Rotation Interval:
Every 7,500 miles.
Transmission Fluid Change Interval:
Refer to manual; typically at higher mileage intervals (e.g., 60,000-100,000 miles) or under severe service conditions.
Engine Oil Spec:
SAE 5W-30, meeting GM dexos1™ or API SM/SN specifications. (Confirm exact spec in manual).
Transmission Fluid Spec:
Dexron VI Automatic Transmission Fluid (ATF).
Coolant Spec:
GM-specified orange silicate-free extended-life coolant (50/50 mix with distilled water).
Brake Fluid Spec:
DOT 3 or DOT 4.
Common Wear Items:
Brake pads and rotors, front struts/shocks, sway bar links, fuel pumps, and liftgate actuators can be common wear items.
Potential Electrical Issues:
Occasional issues with climate control modules, power window motors, or infotainment system glitches are reported.
Engine Specific Notes:
Consider Active Fuel Management (AFM) system issues (lifter noise) on certain 5.3L engines, though often preventable with proper maintenance and oil.
Gmc Heritage:
GMC (General Motors Company) has a long history of producing trucks and utility vehicles, known for their professional-grade quality and capability.
Yukon Xl Lineage:
The Yukon XL is the extended-length version of the GMC Yukon, effectively a rebadged Chevrolet Suburban. The 2008 model represents the second generation of the Yukon XL (GMT900 platform), introduced in 2007, which brought significant updates in styling, interior, and technology.
Manufacturing Location:
Arlington, Texas, USA (GM's primary SUV assembly plant)
