Model Years Covered:
1999, 2000, 2001, 2002, 2003, 2004, 2005
Platform Code:
GMX100 (GMT270 for sedan variants)
Segment:
Compact/Mid-size Sport Sedan
Target Audience:
Younger demographics, budget-conscious consumers seeking sporty styling and performance.
Key Competitors:
Honda Civic Si, Acura RSX, Toyota Corolla (performance variants), Mitsubishi Eclipse, Ford Focus SVT.
Design Philosophy:
Sporty styling, affordable performance, and a focus on everyday usability.
Value Proposition:
Offers a sporty driving experience and aggressive styling at a more accessible price point compared to premium performance sedans.
Manual Type:
Complete Workshop Service Repair Manual
Coverage Scope:
All Models, Engines, Trim Levels, and Transmission Types
Estimated Page Count:
Varies significantly by specific model year and engine, but typically exceeding 1500 pages for a comprehensive workshop manual.
Digital Format:
Downloadable PDF
Accessibility:
Viewable on PC, MAC, Tablets, Smartphones
Software Requirement:
Adobe Reader (Free)
Powertrain:
Engine, Fuel System, Exhaust System, Transmission (Automatic and Manual), Drivetrain (FWD)
Chassis:
Suspension (Front & Rear), Steering, Brakes (Front & Rear Disc/Drum), Wheels & Tires
Electrical:
Battery, Charging System, Ignition System, Lighting, Instrumentation, Body Controls, Powertrain Control Module (PCM), Anti-lock Braking System (ABS), Supplemental Restraint System (SRS/Airbags)
Body And Interior:
Exterior Body Panels, Doors, Windows, Seats, Upholstery, HVAC System, Audio System
Maintenance:
Oil Changes, Fluid Replacements, Filter Replacements, Tune-ups, Inspections
Repair:
Engine Overhaul, Transmission Rebuild, Brake System Repair, Suspension Component Replacement, Electrical Component Diagnosis and Repair, Body Panel Repair
Diagnostics:
Troubleshooting Guides, Symptom-Based Diagnostics, Diagnostic Trouble Codes (DTCs), Electrical Schematics
Installation:
Component Installation and Removal Procedures
Depth:
Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and wiring diagrams.
Engine Code Ecotec:
2.2L Ecotec L61 (Naturally Aspirated)
Displacement Ecotec:
2198 cc (134 cu. in.)
Horsepower Ecotec:
140 hp @ 5800 rpm (approx.)
Torque Ecotec:
145 lb-ft @ 4400 rpm (approx.)
Engine Code 24 Gp:
2.4L LD9 Twin Cam (Naturally Aspirated)
Displacement 24 Gp:
2384 cc (145 cu. in.)
Horsepower 24 Gp:
150 hp @ 5600 rpm (approx.)
Torque 24 Gp:
155 lb-ft @ 4000 rpm (approx.)
Engine Code Supercharged:
2.0L L67 Supercharged V6 (Ecotec)
Displacement Supercharged:
1998 cc (122 cu. in.)
Horsepower Supercharged:
190 hp @ 4800 rpm (approx.)
Torque Supercharged:
205 lb-ft @ 3600 rpm (approx.)
Fuel Delivery:
Multi-Point Fuel Injection (MPFI)
Fuel Type:
Unleaded Gasoline (87 Octane Recommended, higher for Supercharged models for optimal performance)
Valve Train:
DOHC (Dual Overhead Camshafts), 16 Valves (4 cylinders); DOHC, 24 Valves (3.4L V6); DOHC, 24 Valves (2.0L Supercharged V6)
Ignition System:
Distributorless Ignition System (DIS) with Coil-on-Plug (COP) or Coil Pack arrangement.
Transmission Type 1:
4-Speed Automatic (4T40-E or 4T45-E depending on engine)
Transmission Type 2:
5-Speed Manual (M86 or Getrag F23)
Transmission Fluid Spec Auto:
Dexron III (or equivalent, refer to manual for exact specification and part number, e.g., GM P/N 12377045 or equivalent)
Transmission Fluid Spec Manual:
GL-4 Gear Oil (e.g., SAE 75W-85 or 75W-90, refer to manual for exact specification and part number)
Length:
Approx. 185.5 inches (4712 mm)
Width:
Approx. 69.5 inches (1765 mm)
Height:
Approx. 55.5 inches (1410 mm)
Wheelbase:
Approx. 104.5 inches (2654 mm)
Curb Weight:
Approx. 2900 - 3200 lbs (1315 - 1451 kg), varies by engine and equipment.
Trunk Volume:
Approx. 13.0 cu. ft. (368 liters)
NHTSA Frontal Driver 5 Star:
Yes (for specific model years and configurations, check NHTSA data)
NHTSA Frontal Passenger 5 Star:
Yes (for specific model years and configurations, check NHTSA data)
IIHS Side Impact Rating:
Varies by year, some models may have good ratings, others acceptable. Check IIHS archives.
ABS:
Standard on most models, optional on base trims for earlier years.
Traction Control:
Available on higher trims or as an option, especially with Supercharged models.
Airbags:
Driver and Passenger Frontal Airbags standard. Side airbags available on select trims.
Seatbelts:
Three-point front and rear seat belts, pretensioners for front seats.
Oil Change Interval:
Every 7,500 miles or 6 months, whichever comes first, using synthetic blend oil. Refer to manual for specific engine requirements.
Air Filter Replacement:
Every 15,000-30,000 miles, or as needed based on driving conditions.
Spark Plug Replacement:
Approx. 60,000 - 100,000 miles depending on plug type (e.g., platinum or iridium plugs used in later models).
Coolant Type:
GM-specific orange coolant (Dex-Cool) or equivalent. Check manual for correct specification and part number, e.g., GM P/N 1052764 or equivalent.
Brake Fluid Type:
DOT 3 or DOT 4, refer to manual for exact specification and part number.
Power Steering Fluid:
GM Power Steering Fluid or Dexron III ATF. Refer to manual for correct specification and part number.
Common Problems Engine:
Oil leaks (valve cover gasket, oil pan gasket), intake manifold gasket leaks, timing chain stretch (on some Ecotec engines), piston slap (early Ecotec).
Common Problems Transmission:
Transmission fluid leaks, solenoid issues in automatic transmissions, clutch wear in manual transmissions.
Common Problems Suspension Steering:
Worn ball joints, tie rod ends, strut mounts, control arm bushings. Power steering pump leaks.
Common Problems Electrical:
Window regulator failures, power lock actuator failures, instrument cluster issues (pixelation or failure), alternator issues, crank sensor failures.
Common Problems HVAC:
Blend door actuator failures, blower motor resistor failure, AC compressor clutch issues.
Pontiac Legacy:
Pontiac was known for performance-oriented vehicles and sporty styling, often positioned as the 'excitement' brand within GM.
Grand Am Lineage:
The Grand Am nameplate has a long history within Pontiac, evolving from a personal luxury coupe to a sportier, front-wheel-drive platform in its later generations.
Third Gen Transition:
The 1999-2005 models represent the third generation of the modern FWD Grand Am, based on GM's GMX100 platform (shared with other GM W-body cars of the era, though Grand Am was on a variant).
Manufacturing Plant:
Lansing Craft Centre, Lansing, Michigan, USA
Production End Date:
Pontiac brand discontinued by General Motors in 2010, with the Grand Am production ending in 2005.
Segment Popularity:
The Grand Am was a popular model within its segment during its production run, appealing to buyers looking for sporty styling and a good value.
Consumer Reports Reliability:
Reliability ratings varied by model year and engine. Early Ecotec engines had some initial issues. Later models generally saw improvements. The manual recommends consulting specific year reviews for detailed reliability data.
