GMC Envoy 2002-2009 Brakes Specifications
Explore detailed brake specifications for the 2002-2009 GMC Envoy, including rotor sizes, pad types, caliper details, and hydraulic system specs. Ideal for maintenance, repair, and performance upgrades.
Overview Specifications
This document provides detailed specifications and information about the braking system of the 2002-2009 GMC Envoy. It is designed to assist owners, mechanics, and enthusiasts in understanding the brake components, maintenance requirements, and performance characteristics. Use the search functionality to quickly locate specific details or navigate through the sections for a comprehensive understanding of the braking system.
How to Use
Use the search bar to enter keywords related to the braking system, such as 'rotor size' or 'brake pad material'. This will filter the content and highlight relevant sections.
Scroll through the document or use the table of contents to jump to specific sections. Each section is organized into subsections for easy access to detailed information.
Key Specifications
Front Rotor Diameter
12.8 inches
Rear Drum Diameter
11.2 inches
Brake Fluid Type
DOT 3 or DOT 4
Brake Pad Thickness
0.5 inches
ABS System
Standard
Available Specifications
Front Brakes
This section covers the specifications and details of the front braking system, including rotor size, caliper type, and brake pad material. It also provides maintenance tips and performance insights.
Front Brakes
This section covers the specifications and details of the front braking system, including rotor size, caliper type, and brake pad material. It also provides maintenance tips and performance insights.
Rotor Specifications
- Diameter: 12.8 inches
- Thickness: 1.1 inches
- Material: Cast iron
- Ventilation: Vented design for heat dissipation
- Optional point 5: Replace every 50,000-70,000 miles
- Optional point 6: Check for warping during routine maintenance
Caliper Details
- Type: Single-piston floating caliper
- Material: Aluminum alloy
- Brake Pad Material: Semi-metallic
- Pad Thickness: 0.5 inches
- Optional point 5: Inspect for wear every 20,000 miles
- Optional point 6: Lubricate slide pins annually
Rear Brakes
This section provides information on the rear braking system, including drum or disc brake configurations, rotor or drum size, and maintenance recommendations.
Rear Brakes
This section provides information on the rear braking system, including drum or disc brake configurations, rotor or drum size, and maintenance recommendations.
Drum Brake Specifications
- Diameter: 11.2 inches
- Width: 2.5 inches
- Material: Cast iron
- Shoe Material: Organic
- Optional point 5: Adjust every 30,000 miles
- Optional point 6: Replace shoes every 40,000-60,000 miles
Disc Brake Specifications
- Diameter: 12.6 inches
- Thickness: 0.9 inches
- Material: Cast iron
- Caliper Type: Single-piston
- Optional point 5: Inspect rotors for wear annually
- Optional point 6: Replace pads every 30,000-50,000 miles
Brake Fluid and Hydraulics
This section details the brake fluid type, hydraulic system components, and maintenance requirements to ensure optimal braking performance.
Brake Fluid and Hydraulics
This section details the brake fluid type, hydraulic system components, and maintenance requirements to ensure optimal braking performance.
Brake Fluid Specifications
- Type: DOT 3 or DOT 4
- Capacity: 1.5 liters
- Boiling Point: 401°F (DOT 3)
- Replacement Interval: Every 2 years or 30,000 miles
- Optional point 5: Check for contamination annually
- Optional point 6: Use only manufacturer-recommended fluid
Hydraulic System Components
- Master Cylinder: Dual-circuit design
- Brake Lines: Steel braided
- ABS System: Standard on all models
- Fluid Reservoir: Transparent for easy inspection
- Optional point 5: Inspect for leaks annually
- Optional point 6: Replace brake lines every 10 years
Search Specifications
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Brakes Specifications
Overview
- Type
- Hydraulic Disc/Drum
- Configuration
- Front Disc, Rear Drum
- Platform
- GMT360
- Material
- Cast Iron Rotors, Steel Drums
- Location
- Front and Rear Axles
Dimensions
- Front Rotor Diameter
- 12.0 inches / 304.8 mm
- Front Rotor Thickness
- 1.1 inches / 28 mm
- Rear Drum Diameter
- 11.0 inches / 279.4 mm
- Rear Drum Width
- 2.5 inches / 63.5 mm
- Brake Pad Length
- 6.3 inches / 160 mm
- Brake Pad Width
- 2.5 inches / 63.5 mm
- Brake Line Diameter
- 0.25 inches / 6.35 mm
Materials
- Rotors
- Cast Iron with Anti-Corrosion Coating
- Drums
- Steel with Heat-Resistant Alloy
- Brake Pads
- Ceramic Friction Material
- Brake Lines
- Steel Braided with Rubber Coating
Features
- Performance
-
- High-Friction Brake Pads
- Vented Front Rotors
- Heat-Dissipating Drum Design
- Anti-Lock Braking System (ABS)
- Durability
-
- Corrosion-Resistant Rotors
- Reinforced Brake Lines
- Long-Lasting Ceramic Pads
- Safety
-
- Electronic Brake Force Distribution (EBD)
- Traction Control System (TCS)
- Brake Assist
- Maintenance
-
- Wear Indicators on Pads
- Easy-Access Caliper Design
- Self-Adjusting Rear Drums
- Comfort
-
- Low Noise Operation
- Smooth Brake Engagement
- Minimal Vibration
Safety Features
- Primary Systems
-
- Anti-Lock Braking System (ABS)
- Electronic Stability Control (ESC)
- Secondary Systems
-
- Brake Assist
- Traction Control System (TCS)
- Monitoring
-
- Brake Pad Wear Sensors
- Fluid Level Sensors
Comfort Features
- Noise Reduction
-
- Ceramic Brake Pads
- Insulated Calipers
- Vibration Control
-
- Balanced Rotors
- Dampened Brake Lines
- Pedal Feel
-
- Hydraulic Boost System
- Linear Brake Response
- Environmental
-
- Low Dust Pads
- Eco-Friendly Brake Fluid
Accessories
- Upgrades
-
- Performance Rotors
- High-Temperature Pads
- Stainless Steel Brake Lines
- Tools
-
- Caliper Compression Tool
- Brake Bleeder Kit
- Drum Brake Spring Tool
- Maintenance Kits
-
- Pad and Rotor Kit
- Drum and Shoe Kit
- Brake Fluid Flush Kit
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect Brake Pads and Rotors
- Check Brake Fluid Level
- Inspect Brake Lines for Leaks
- Test ABS Functionality
- Adjust Rear Drum Brakes
- Maintenance Notes
- Replace brake fluid every 60,000 miles or 48 months.
Warranty
- Parts Warranty
- Miles: 36,000Years: 3Coverage: Brake Pads, Rotors, Drums
- Labor Warranty
- Miles: 12,000Years: 1Coverage: Installation and Adjustments
- Corrosion Warranty
- Miles: UnlimitedYears: 5Coverage: Rust-Through on Rotors and Drums
- Fluid Warranty
- Miles: 60,000Years: 5Coverage: Brake Fluid Replacement
Production Details
- Manufacturer
- Delphi Automotive
- Manufacturing Process
-
- Casting for Rotors and Drums
- CNC Machining for Precision
- Heat Treatment for Durability
- Quality Control
- inspection: 100% Dimensional ChecksTesting: High-Speed Balance TestingCertification: ISO 9001 Compliant
- Sustainability Practices
-
- Recycled Materials in Pads
- Low-Emission Manufacturing
- Water-Based Coatings
- Production Metrics
- Annual Output: 2 Million UnitsDefect Rate: 0.01%Lead Time: 4 Weeks
Service Information for brakes Service
Maintenance and service requirements specific to this component
- Inspect Brake Pads and Rotors
- Check Brake Fluid Level
- Inspect Brake Lines for Leaks
- Test ABS Functionality
- Adjust Rear Drum Brakes
Ensure proper lubrication of caliper slides.
- Replace Brake Pads
- Resurface or Replace Rotors
- Flush Brake Fluid
- Inspect ABS Sensors
- Replace Rear Brake Shoes if Needed
Use DOT 4 brake fluid for optimal performance.
- Replace Rotors and Drums
- Replace Brake Lines if Corroded
- Inspect Master Cylinder
- Test Traction Control System
- Perform Full Brake System Bleed
Replace all wear components regardless of condition.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are these brakes compatible with all 2002-2009 GMC Envoy models?
Are these brakes compatible with all 2002-2009 GMC Envoy models?
The brakes are designed to be compatible with all 2002-2009 GMC Envoy models, including both 2WD and 4WD configurations. They meet OEM specifications for rotor size, pad material, and caliper fitment. However, it is recommended to verify compatibility with your specific trim level and engine type, as some performance or towing packages may require upgraded components.
Q2 What is the recommended maintenance schedule for GMC Envoy brakes?
What is the recommended maintenance schedule for GMC Envoy brakes?
For optimal performance, inspect the brake pads, rotors, and calipers every 12,000 miles or annually. Replace brake pads when they reach 3mm thickness or show uneven wear. Rotors should be resurfaced or replaced if they exhibit scoring, warping, or thickness below the minimum specification. Brake fluid should be flushed every 30,000 miles or as recommended by the manufacturer.
Q3 How do I replace the brake pads on a 2002-2009 GMC Envoy?
How do I replace the brake pads on a 2002-2009 GMC Envoy?
To replace brake pads, lift the vehicle and remove the wheels. Unbolt the caliper and hang it securely to avoid damaging the brake line. Remove the old pads and inspect the rotors. If necessary, resurface or replace the rotors. Install the new pads, reassemble the caliper, and torque the bolts to the manufacturer's specifications. Pump the brake pedal to restore pressure before driving.
Q4 What should I do if my brakes are squeaking or vibrating?
What should I do if my brakes are squeaking or vibrating?
Squeaking may indicate worn pads or contamination on the rotor surface. Inspect the pads and clean the rotors with brake cleaner. Vibrations often suggest warped rotors, which should be resurfaced or replaced. Ensure all components are properly torqued and that the brake system is free of air by bleeding the brakes if necessary.
Q5 How can I optimize the performance of my GMC Envoy brakes?
How can I optimize the performance of my GMC Envoy brakes?
Use high-quality brake pads and rotors designed for your driving conditions. For towing or heavy loads, consider performance-grade components. Regularly clean the brake system to prevent debris buildup. Ensure proper bedding of new pads by following the manufacturer's break-in procedure. Maintain proper tire pressure and alignment to reduce unnecessary strain on the brakes.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2002-2009 GMC Envoy Service Manual
Coming SoonComprehensive guide covering brake system maintenance, repair, and troubleshooting for all 2002-2009 GMC Envoy models.
Brake System Technical Bulletin for 2002-2009 GMC Envoy
Coming SoonOfficial bulletin addressing common brake system issues, updates, and recommended solutions for the 2002-2009 GMC Envoy.
GMC Envoy Brake Parts Catalog
Coming SoonDetailed catalog of OEM and aftermarket brake components, including pads, rotors, and calipers for 2002-2009 GMC Envoy models.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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