This comprehensive 1991 Pontiac Grand Prix Service and Repair Manual provides detailed instructions and illustrations for maintaining, servicing, diagnosing, and repairing your vehicle. It covers all models and all repairs from A to Z, offering the same information used by technicians at dealerships.

Experience the convenience of having all the information you need at your fingertips with this manual. Benefit from complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications to tackle any repair with ease. Print only the pages and diagrams you require, eliminating the need to flip through bulky books.

The manual covers a wide range of topics, including:

* **Maintenance:** Regular upkeep and preventative measures for optimal vehicle performance.
* **Engine:** Detailed explanations of engine components, operation, and repair procedures.
* **Control System:** Understanding and troubleshooting the intricate electronic systems that govern your vehicle.
* **Mechanical:** In-depth guides for repairing various mechanical systems, from the transmission to the suspension.
* **Fuel Service Specifications:** Precise information on fuel systems, including specifications and troubleshooting.
* **Emission Control:** Guidance on maintaining and repairing emission control systems to ensure environmental compliance.
* **Intake Exhaust Cooling:** Comprehensive information on cooling systems and their components.
* **Lube:** Proper lubrication techniques and specifications for various engine components.
* **Ignition Starting Charging:** Understanding and repairing the ignition, starting, and charging systems.
* **Auto Transmission Clutch:** Detailed repair procedures for automatic transmissions and clutches.
* **Manual Transmission:** Comprehensive information on manual transmission systems and troubleshooting.
* **Transfer Propeller Shaft:** Repair and maintenance of the transfer case and propeller shaft.
* **Drive Shaft:** Information on drive shaft components and repair procedures.
* **Differential:** Understanding and repairing the differential systems in your vehicle.
* **Axle Suspension:** Detailed guides for maintaining and repairing axles and suspension systems.
* **Tire & Wheel:** Information on tire and wheel care, including repair and replacement.
* **Brake Control:** Understanding the brake control system and troubleshooting procedures.
* **Brake:** Comprehensive guidance on brake system components, maintenance, and repair.
* **Parking Brake:** Information on parking brake operation and repair.
* **Steering Column:** Detailed instructions for repairing and adjusting the steering column.
* **Power Steering:** Understanding and troubleshooting the power steering system.
* **Air Condition:** Comprehensive information on air conditioning systems, including troubleshooting and repair.
* **Suppl Restraint System:** Understanding and maintaining the supplemental restraint system (airbags).
* **Seat Belt:** Detailed information on seat belt components and repair procedures.
* **Engine Immobilizer:** Guidance on the engine immobilizer system and troubleshooting.
* **Cruise Control:** Information on cruise control operation and repair.
* **Wiper & Washer:** Understanding and repairing the wiper and washer systems.
* **Door Lock:** Comprehensive instructions for repairing and adjusting door locks.
* **Meter Audio/Visual:** Information on the instrument cluster and audio/visual systems.
* **Horn:** Understanding and troubleshooting the horn system.
* **Windshield/Glass Mirror:** Information on windshield, glass, and mirror repair.
* **Instrument Panel:** Detailed instructions for repairing and adjusting the instrument panel.
* **Seat:** Comprehensive information on seat components and repair procedures.
* **Engine Hood/ Door:** Guidance on repairing and adjusting engine hood and doors.
* **Exterior & Interior:** Information on repairing and maintaining the exterior and interior of your vehicle.
* **Electrical:** Understanding and troubleshooting the electrical systems in your vehicle.
* **Multiplex/ Can Communication:** Information on multiplex and CAN communication systems.

This comprehensive manual empowers you to handle repairs with confidence, saving you time and money.

The 1991 Pontiac Grand Prix was a mid-size two-door coupe that exemplified the muscle car styling and performance that Pontiac was known for. It was the seventh generation of the Grand Prix line, and it boasted a more aerodynamic and modern design compared to its predecessors. The Grand Prix was offered with a range of engine options, including a 3.1L V6 and a 3.8L V6, with the available 5.7L V8 producing a spirited 200 horsepower. This strong powertrain was paired with a smooth-shifting automatic transmission, resulting in a driving experience that was both exhilarating and comfortable. Interior features included cloth or leather seating, a stereo system, power windows and locks, and air conditioning. While not known for its fuel efficiency, the Grand Prix was a popular choice for drivers who valued performance and style.

The 1991 Pontiac Grand Prix was also a notable example of automotive engineering that embraced advanced technology. For instance, the car featured a sophisticated Electronic Control Module (ECM) that managed various aspects of engine performance, including fuel injection and ignition timing. The ECM was designed to optimize fuel economy and emissions while maximizing power output. Moreover, the Grand Prix was equipped with a comprehensive safety system that included anti-lock brakes, a driver's side airbag, and a robust steel frame. These safety features were designed to protect occupants in the event of an accident, enhancing peace of mind for drivers and passengers alike. The 1991 Pontiac Grand Prix stands as a testament to the enduring appeal of classic American muscle cars, offering a blend of style, performance, and technology that continues to resonate with enthusiasts today.