This comprehensive 2008 Pontiac G8 & G8 GT Service and Repair Manual provides you with the exact same information used by technicians at dealerships to maintain, service, diagnose, and repair your vehicle. It covers all models and all repairs from A to Z.

This manual features complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications to help you confidently perform repairs on your vehicle. You'll find detailed information on a wide range of topics, including:

* **Maintenance:** Routine maintenance schedules, fluid capacities, and replacement intervals.
* **Engine:** Detailed information on engine components, operation, troubleshooting, and repair procedures.
* **Control System:** Comprehensive coverage of engine control systems, including electronic control modules (ECMs), sensors, and actuators.
* **Mechanical:** In-depth coverage of mechanical systems, such as the transmission, suspension, braking, and steering systems.
* **Fuel Service Specifications:** Detailed specifications for fuel systems, including fuel lines, injectors, and pumps.
* **Emission Control:** Information on emission control systems, including catalytic converters, oxygen sensors, and evaporative emission systems.
* **Intake Exhaust Cooling:** Detailed descriptions and repair procedures for intake and exhaust systems.
* **Lube:** Specifications for lubricants and fluids used in the vehicle.
* **Ignition Starting Charging:** Information on ignition, starting, and charging systems.
* **Auto Transmission Clutch:** Detailed information on automatic transmission operation, troubleshooting, and repair.
* **Manual Transmission:** Information on manual transmission operation, troubleshooting, and repair.
* **Transfer Propeller Shaft:** Detailed coverage of transfer case and propeller shaft systems.
* **Drive Shaft:** Information on drive shaft components and repair procedures.
* **Differential:** Comprehensive coverage of differential systems, including operation, maintenance, and repair.
* **Axle Suspension:** Detailed descriptions of axle and suspension components and repair procedures.
* **Tire & Wheel:** Information on tire specifications, wheel types, and maintenance.
* **Brake Control:** Comprehensive coverage of brake control systems, including ABS and traction control.
* **Brake:** Detailed information on brake system components, adjustment, and repair procedures.
* **Parking Brake:** Information on parking brake operation, adjustment, and repair.
* **Steering Column:** Detailed coverage of steering column components and repair procedures.
* **Power Steering:** Information on power steering system operation, troubleshooting, and repair.
* **Air Condition:** Comprehensive coverage of air conditioning systems, including refrigerant specifications, system diagnostics, and repair.
* **Suppl Restraint System:** Detailed information on supplemental restraint systems, including airbags and seatbelts.
* **Seat Belt:** Information on seat belt operation, adjustment, and repair.
* **Engine Immobilizer:** Detailed descriptions of engine immobilizer systems.
* **Cruise Control:** Information on cruise control operation, troubleshooting, and repair.
* **Wiper & Washer:** Detailed descriptions of wiper and washer systems.
* **Door Lock:** Information on door lock operation and repair procedures.
* **Meter Audio/Visual:** Detailed coverage of instrument cluster and audio/visual systems.
* **Horn:** Information on horn operation and repair procedures.
* **Windshield/Glass Mirror:** Detailed descriptions of windshield, glass, and mirror systems.
* **Instrument Panel:** Information on instrument panel components and repair procedures.
* **Seat:** Detailed coverage of seat components, adjustment, and repair.
* **Engine Hood/Door:** Information on engine hood and door operation and repair procedures.
* **Exterior & Interior:** Detailed descriptions of exterior and interior features, including trim, lighting, and accessories.
* **Electrical:** Comprehensive coverage of electrical systems, including wiring diagrams, fuses, and relays.
* **Multiplex/Can Communication:** Information on multiplex and CAN communication systems.

This manual provides you with the tools and knowledge to confidently maintain and repair your 2008 Pontiac G8 & G8 GT.

The 2008 Pontiac G8 and G8 GT were powerful and stylish rear-wheel-drive sedans that marked a return to performance for the American brand. These vehicles were based on the Australian Holden Commodore platform, leveraging the expertise of General Motors' subsidiary in building powerful and engaging driving experiences. The G8 was available in two trims: the standard G8, powered by a 3.6-liter V6 engine generating 256 horsepower, and the performance-focused G8 GT, equipped with a 6.0-liter LS2 V8 engine producing 400 horsepower. Both models were offered with a six-speed automatic transmission, though the G8 GT also offered a six-speed manual transmission option. These powerful engines, coupled with the G8's responsive handling and well-balanced suspension, made it a formidable competitor in the mid-size sedan market.

The 2008 Pontiac G8 and G8 GT offered a comfortable and well-appointed interior, with standard features including leather seating, a premium sound system, and a comprehensive array of safety technologies. The G8 GT, in particular, offered a sportier interior with aggressive styling cues and performance-oriented features such as sport bucket seats and a performance-tuned steering wheel. While the G8 enjoyed a brief but enthusiastic reception from performance-minded enthusiasts, the Pontiac brand was discontinued in 2010, leaving the G8 as a short-lived but highly regarded model. The G8's distinctive design, powerful engine options, and engaging driving dynamics cemented its status as a memorable and sought-after performance sedan, making it a sought-after classic among enthusiasts.