Pontiac Pontiac Grand Prix 2004-2008 Suspension Specifications
Explore detailed suspension specifications for the 2004-2008 Pontiac Grand Prix, including struts, shocks, springs, and alignment settings. Ideal for maintenance, repair, and performance upgrades.
Overview Specifications
This document provides detailed suspension specifications and technical information for the 2004-2008 Pontiac Grand Prix. It is designed to assist enthusiasts, mechanics, and owners in understanding the vehicle's suspension system. The content is organized into sections covering front and rear suspension components, alignment specifications, and key features. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search function to locate specific terms or components. Enter keywords like 'front suspension' or 'alignment' to jump directly to relevant sections.
Scroll through the sections or use the table of contents to navigate. Each section is clearly labeled for easy access to front suspension, rear suspension, and alignment details.
Key Specifications
Front Suspension Type
MacPherson Strut
Rear Suspension Type
Trailing Arm
Front Stabilizer Bar Diameter
28 mm
Rear Stabilizer Bar Diameter
18 mm
Shock Absorber Type
Gas-Charged
Available Specifications
Front Suspension
The front suspension of the 2004-2008 Pontiac Grand Prix is designed for stability and responsive handling. This section covers the key components, including the strut assembly, control arms, and steering linkage.
Front Suspension
The front suspension of the 2004-2008 Pontiac Grand Prix is designed for stability and responsive handling. This section covers the key components, including the strut assembly, control arms, and steering linkage.
Strut Assembly
- MacPherson strut design for compactness and efficiency
- Coil spring integrated with the strut for improved ride quality
- Gas-charged shock absorbers for enhanced damping
- Upper strut mounts with rubber bushings for noise reduction
Control Arms
- Lower control arms made of stamped steel for durability
- Ball joints integrated into the control arms for easy replacement
- Rubber bushings at the control arm pivots for vibration isolation
- Stabilizer bar connected to the lower control arms for reduced body roll
Rear Suspension
The rear suspension system of the Pontiac Grand Prix ensures a smooth and controlled ride. This section details the components, including the trailing arms, shocks, and springs.
Rear Suspension
The rear suspension system of the Pontiac Grand Prix ensures a smooth and controlled ride. This section details the components, including the trailing arms, shocks, and springs.
Trailing Arms
- Steel trailing arms for strength and reliability
- Rubber bushings at the pivot points for noise reduction
- Adjustable camber settings for alignment customization
- Integrated mounting points for the rear stabilizer bar
Shock Absorbers and Springs
- Twin-tube gas-charged shock absorbers for consistent performance
- Coil springs with progressive rates for improved load handling
- Lower spring mounts with rubber isolators for reduced vibration
- Upper shock mounts designed for easy replacement
Alignment Specifications
Proper alignment is crucial for optimal handling and tire wear. This section provides the factory-recommended alignment settings for the Pontiac Grand Prix.
Alignment Specifications
Proper alignment is crucial for optimal handling and tire wear. This section provides the factory-recommended alignment settings for the Pontiac Grand Prix.
Front Alignment
- Camber angle: -0.5° to +0.5°
- Caster angle: +3.5° to +4.5°
- Toe-in: 0.10° to 0.30°
- Steering axis inclination: 12.5° to 13.5°
Rear Alignment
- Camber angle: -1.0° to +0.5°
- Toe-in: 0.10° to 0.30°
- Thrust angle: 0° for symmetrical alignment
- Adjustable camber bolts for fine-tuning
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Component Specifications
Overview
- Type
- Independent MacPherson strut front, semi-independent torsion beam rear
- Configuration
- Front and rear suspension system
- Platform
- GM W-body
- Material
- Steel and aluminum components
- Location
- Underbody, front and rear axles
Dimensions
- Front Strut Length
- 22.5 inches (571.5 mm)
- Rear Spring Length
- 15.7 inches (398.8 mm)
- Front Track Width
- 61.4 inches (1560 mm)
- Rear Track Width
- 60.9 inches (1547 mm)
- Front Strut Diameter
- 2.1 inches (53.3 mm)
- Rear Shock Diameter
- 1.8 inches (45.7 mm)
- Spring Wire Diameter
- 0.6 inches (15.2 mm)
Materials
- Strut Body
- High-strength steel
- Spring
- Chromium-silicon alloy steel
- Control Arms
- Forged aluminum
- Bushings
- Polyurethane and rubber compounds
- Shock ABSorber
- Stainless steel and hydraulic fluid
Features
- Damping
-
- Hydraulic shock absorbers
- Gas-pressurized struts
- Adjustable rebound damping
- Springs
-
- Progressive rate coil springs
- Anti-sag design
- Corrosion-resistant coating
- Stabilizer Bars
-
- Hollow front stabilizer bar
- Solid rear stabilizer bar
- Isolated mounting points
- Bushings
-
- High-durability rubber bushings
- Polyurethane upgrade available
- Grease fittings for lubrication
- Alignment
-
- Adjustable camber and caster
- Toe adjustment capability
- Precision alignment points
Safety Features
- Structural
-
- Reinforced strut towers
- High-strength control arms
- Stability
-
- Electronic Stability Control integration
- Anti-roll bar system
- Durability
-
- Corrosion-resistant coatings
- Heavy-duty components
Comfort Features
- Ride Quality
-
- Progressive spring rates
- Hydraulic damping
- Isolated suspension mounts
- Noise Reduction
-
- Insulated bushings
- Rubber isolators
- Quiet damping system
- Handling
-
- Precision steering response
- Stable cornering
- Minimized body roll
Accessories
- Performance Upgrades
-
- Lowering springs
- Adjustable coilovers
- Polyurethane bushings
- Maintenance Kits
-
- Strut mount replacement kit
- Complete bushing set
- Alignment kit
- Tools
-
- Spring compressor
- Strut removal tool
- Bushing press
Maintenance
- Service interval
- Every 50,000 miles or 5 years
- Service Items
-
- Inspect struts and shocks
- Check bushings for wear
- Lubricate suspension points
- Verify alignment
- Inspect spring condition
- Maintenance Notes
- Regular inspection recommended for harsh driving conditions
Warranty
- Basic
- Miles: 36000Years: 3Coverage: Manufacturer defects
- Powertrain
- Miles: 60000Years: 5Coverage: Suspension components
- Corrosion
- Miles: 100000Years: 10Coverage: Rust-through protection
- Emissions
- Miles: 80000Years: 8Coverage: Emissions-related suspension parts
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision forging
- Heat treatment
- Robotic assembly
- Quality Control
- Testing: Durability testing, Alignment verification, Vibration analysisStandards: ISO 9001 certified
- Sustainability Practices
-
- Recyclable materials
- Low-emission manufacturing
- Waste reduction programs
- Production Metrics
- Annual Output: 250,000 unitsDefect Rate: 0.05%Lead Time: 3 days
Service Information for suspension Service
Maintenance and service requirements specific to this component
- Inspect suspension components for wear
- Check for leaks in shock absorbers
- Lubricate suspension joints
- Verify wheel alignment
- Tighten all suspension bolts
Visual inspection is critical for early wear detection
- Replace worn bushings
- Inspect strut mounts
- Check spring condition
- Test shock absorber performance
- Verify stabilizer bar integrity
Professional alignment recommended after suspension work
- Replace all suspension bushings
- Inspect and replace struts if needed
- Replace shock absorbers
- Check and replace springs if sagging
- Complete suspension overhaul
Consider upgrading to performance components during major service
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What suspension components are compatible with the 2004-2008 Pontiac Grand Prix?
What suspension components are compatible with the 2004-2008 Pontiac Grand Prix?
The 2004-2008 Pontiac Grand Prix is compatible with a range of suspension components, including struts, shocks, springs, and control arms. OEM parts are designed for exact fitment, while aftermarket options offer enhanced performance or durability. Ensure compatibility by checking part numbers against your vehicle's specifications, particularly for models with the GT or GTP trims, as they may have unique requirements.
Q2 What maintenance is required for the suspension system of a 2004-2008 Pontiac Grand Prix?
What maintenance is required for the suspension system of a 2004-2008 Pontiac Grand Prix?
Regular suspension maintenance for the 2004-2008 Pontiac Grand Prix includes inspecting struts, shocks, and springs for wear or damage, checking for loose or worn bushings, and ensuring proper alignment. Lubricate moving parts as needed and replace components showing signs of failure. A professional inspection every 50,000 miles is recommended to maintain optimal performance and safety.
Q3 How do I replace the front struts on a 2004-2008 Pontiac Grand Prix?
How do I replace the front struts on a 2004-2008 Pontiac Grand Prix?
To replace the front struts, first, safely lift and secure the vehicle. Remove the wheel and disconnect the sway bar link and brake line bracket. Unbolt the strut from the steering knuckle and remove the upper strut mount bolts under the hood. Install the new strut in reverse order, ensuring all bolts are torqued to factory specifications. A spring compressor tool is required for safe handling.
Q4 Why is my 2004-2008 Pontiac Grand Prix experiencing uneven tire wear?
Why is my 2004-2008 Pontiac Grand Prix experiencing uneven tire wear?
Uneven tire wear on a 2004-2008 Pontiac Grand Prix is often caused by misalignment, worn suspension components, or improper tire inflation. Inspect the suspension for damaged parts, such as control arms or struts, and check tire pressure. If the issue persists, a professional alignment and suspension inspection are recommended to diagnose and correct the problem.
Q5 How can I improve the handling of my 2004-2008 Pontiac Grand Prix?
How can I improve the handling of my 2004-2008 Pontiac Grand Prix?
To enhance handling, consider upgrading to performance struts, shocks, and springs designed for the 2004-2008 Pontiac Grand Prix. Install a stiffer sway bar to reduce body roll and ensure tires are properly inflated and aligned. Regularly inspect and maintain suspension components to ensure optimal performance. These modifications can significantly improve cornering stability and ride quality.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2004-2008 Pontiac Grand Prix Service Manual
Coming SoonThis comprehensive service manual provides detailed instructions for maintenance, repair, and troubleshooting of the 2004-2008 Pontiac Grand Prix, including suspension systems.
Technical Service Bulletin: Suspension Noise
Coming SoonThis bulletin addresses common issues with suspension noise in the 2004-2008 Pontiac Grand Prix and provides recommended solutions for diagnosis and repair.
Pontiac Grand Prix Suspension Parts Catalog
Coming SoonThis catalog lists all available suspension components for the 2004-2008 Pontiac Grand Prix, including OEM and aftermarket options, with detailed specifications and part numbers.
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