GMC Sonoma 1994-2004 Brakes Specifications
Explore the detailed brake system specifications for the 1994-2004 GMC Sonoma, including brake pads, rotors, calipers, and fluid requirements. Ideal for maintenance, repair, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the braking system of the 1994-2004 GMC Sonoma. It is designed to help users understand the components, functionality, and maintenance of the brakes. Use this guide to locate specific details, navigate through sections, and find quick reference information. Whether you're a mechanic or a vehicle owner, this resource will assist you in ensuring optimal brake performance and safety.
How to Use
Use the search functionality to quickly locate specific brake components or specifications. Enter keywords like 'brake pads' or 'rotor diameter' to find relevant information. The search feature is case-insensitive and supports partial matches.
Navigate through the document using the section titles and subsections. Each section is organized by major brake components, with detailed subsections for specific parts. Use the table of contents or scroll to find the information you need.
Key Specifications
Front Rotor Diameter
11.0 inches
Rear Rotor Diameter
9.5 inches
Brake Fluid Type
DOT 3 or DOT 4
Brake Pad Thickness (New)
10-12 mm
Master Cylinder Bore Size
1.0 inches
Available Specifications
Brake System Components
This section covers the primary components of the GMC Sonoma's braking system, including the brake pads, rotors, calipers, and brake lines. Understanding these parts is essential for maintenance and troubleshooting.
Brake System Components
This section covers the primary components of the GMC Sonoma's braking system, including the brake pads, rotors, calipers, and brake lines. Understanding these parts is essential for maintenance and troubleshooting.
Brake Pads
- Material: Semi-metallic or ceramic
- Thickness: 10-12 mm (new)
- Replacement interval: 30,000-70,000 miles
- Compatibility: Front and rear options vary
Rotors
- Diameter: 11.0 inches (front), 9.5 inches (rear)
- Thickness: 22 mm (front), 10 mm (rear)
- Material: Cast iron
- Replacement interval: 50,000-70,000 miles
Brake Fluid and Hydraulics
This section focuses on the brake fluid specifications and hydraulic system components, including the master cylinder and brake lines. Proper fluid maintenance is crucial for brake performance.
Brake Fluid and Hydraulics
This section focuses on the brake fluid specifications and hydraulic system components, including the master cylinder and brake lines. Proper fluid maintenance is crucial for brake performance.
Brake Fluid
- Type: DOT 3 or DOT 4
- Capacity: 0.5 liters (system)
- Replacement interval: Every 2 years or 30,000 miles
- Boiling point: 401°F (DOT 3)
Master Cylinder
- Bore size: 1.0 inches
- Material: Aluminum
- Function: Converts pedal force to hydraulic pressure
- Replacement interval: As needed
Brake System Maintenance
This section provides guidelines for maintaining the GMC Sonoma's braking system, including inspection, pad replacement, and rotor resurfacing. Regular maintenance ensures safety and longevity.
Brake System Maintenance
This section provides guidelines for maintaining the GMC Sonoma's braking system, including inspection, pad replacement, and rotor resurfacing. Regular maintenance ensures safety and longevity.
Inspection
- Check brake pads every 10,000 miles
- Inspect rotors for wear and warping
- Monitor brake fluid level monthly
- Look for leaks in brake lines
Pad Replacement
- Tools required: Jack, lug wrench, C-clamp
- Steps: Remove wheel, compress caliper, replace pads
- Torque specs: 80-100 ft-lbs (caliper bolts)
- Test drive after replacement
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Brakes Specifications
Overview
- Type
- Hydraulic disc/drum
- Configuration
- Front disc, rear drum
- Platform
- Light truck
- Material
- Cast iron rotors, steel drums
- Location
- Wheel-mounted
Dimensions
- Front Rotor Diameter
- 11.0 inches (279.4 mm)
- Rear Drum Diameter
- 9.5 inches (241.3 mm)
- Front Rotor Thickness
- 1.02 inches (25.9 mm)
- Rear Drum Width
- 2.0 inches (50.8 mm)
- Pad Length
- 5.5 inches (139.7 mm)
- Shoe Length
- 7.8 inches (198.1 mm)
- Caliper Piston Diameter
- 2.56 inches (65 mm)
- Master Cylinder Diameter
- 1.0 inch (25.4 mm)
Materials
- Rotors
- Cast iron with anti-corrosion coating
- Drums
- Carbon steel
- Pads
- Ceramic composite
- Shoes
- Organic friction material
- Calipers
- Aluminum alloy
Features
- Braking System
-
- Dual-circuit hydraulic system
- Proportioning valve
- Anti-lock braking system (ABS) optional
- Parking brake integrated with rear drums
- Performance
-
- Progressive pedal feel
- Enhanced heat dissipation
- Low noise operation
- Consistent stopping power
- Durability
-
- Corrosion-resistant components
- High-temperature resistant pads
- Sealed wheel cylinder design
- Long-lasting friction materials
- Maintenance
-
- Easy pad replacement
- Adjustable rear shoes
- Accessible bleeder valves
- Visual wear indicators
- Safety
-
- Redundant hydraulic circuits
- Emergency brake assist
- ABS wheel speed sensors
- Parking brake warning light
Safety Features
- System Reliability
-
- Dual hydraulic circuits
- Separate front/rear systems
- Redundant parking brake
- Crash Prevention
-
- ABS available on later models
- Short stopping distances
- Predictable brake response
- Driver Assistance
-
- Brake warning light
- ABS warning light
- Pedal travel warning
Comfort Features
- Operation
-
- Smooth pedal feel
- Low noise levels
- Minimal vibration
- Maintenance
-
- Easy pad inspection
- Simple shoe adjustment
- Accessible fluid reservoir
- Environmental
-
- Low dust pads
- Corrosion-resistant components
- Eco-friendly materials
Accessories
- Upgrades
-
- Performance brake pads
- Slotted rotors
- Stainless steel brake lines
- ABS retrofit kits
- Tools
-
- Brake bleeder kit
- Caliper compressor
- Drum brake tool set
- Torque wrench
- Maintenance
-
- Brake fluid tester
- Pad wear gauge
- Brake cleaner spray
- Anti-seize compound
Maintenance
- Service interval
- Every 12,000 miles or 12 months
- Service Items
-
- Inspect pad thickness
- Check rotor condition
- Adjust rear brakes
- Inspect fluid level
- Test parking brake
- Bleed brake system
- Maintenance Notes
- Use only DOT 3 or DOT 4 brake fluid. Avoid mixing fluid types.
Warranty
- Parts Warranty
- Miles: 36,000Years: 3Coverage: Brake pads, shoes, rotors, drums
- Labor Warranty
- Miles: 12,000Years: 1Coverage: Brake system installation
- Corrosion Warranty
- Miles: 100,000Years: 10Coverage: Rotor and drum corrosion
- Performance Warranty
- Miles: 50,000Years: 5Coverage: Brake system performance
Production Details
- Manufacturer
- Delphi Automotive
- Manufacturing Process
-
- Casting for rotors and drums
- Machining for precision surfaces
- Heat treatment for durability
- Assembly with quality control checks
- Quality Control
- Dimensional Checks: 100% inspectionMaterial Testing: Batch samplingPerformance Testing: Dynamic brake testing
- Sustainability Practices
-
- Recycled materials in friction components
- Eco-friendly production processes
- Minimized waste in manufacturing
- Production Metrics
- Units Per Day: 500Defect Rate: 0.2%Energy Consumption: 15 kWh per set
Service Information for brakes Service
Maintenance and service requirements specific to this component
- Inspect brake pad thickness
- Check rotor condition
- Inspect brake fluid level
- Test parking brake operation
- Adjust rear brake shoes
Use only DOT 3 or DOT 4 brake fluid
- Replace brake pads if needed
- Resurface or replace rotors
- Inspect brake lines and hoses
- Check ABS system function
- Bleed brake system
Replace rotors if below minimum thickness
- Replace rear brake shoes
- Inspect wheel cylinders
- Replace brake fluid
- Check master cylinder function
- Perform full brake system test
Complete system inspection recommended
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are these brakes compatible with all 1994-2004 GMC Sonoma models?
Are these brakes compatible with all 1994-2004 GMC Sonoma models?
The brakes are compatible with all 1994-2004 GMC Sonoma models, including both 2WD and 4WD configurations. They are designed to meet OEM specifications, ensuring proper fit and performance. However, it's recommended to verify the specific trim and engine size, as certain performance packages may require unique brake components. Always cross-check part numbers with your vehicle's manual or consult a professional for confirmation.
Q2 What is the recommended maintenance schedule for these brakes?
What is the recommended maintenance schedule for these brakes?
Brake maintenance for the 1994-2004 GMC Sonoma involves inspecting brake pads every 12,000 miles and replacing them if worn below 3mm. Rotors should be checked for warping or scoring every 25,000 miles. Brake fluid should be flushed every 30,000 miles or as per your driving conditions. Regular inspections of brake lines and calipers are also advised to ensure optimal performance and safety.
Q3 How do I replace the brakes on my 1994-2004 GMC Sonoma?
How do I replace the brakes on my 1994-2004 GMC Sonoma?
To replace the brakes, first, safely lift the vehicle and remove the wheels. Unbolt the caliper and carefully hang it to avoid damaging the brake line. Remove the old brake pads and inspect the rotor. If necessary, replace or resurface the rotor. Install the new brake pads, reassemble the caliper, and secure it with bolts. Reinstall the wheels and lower the vehicle. Test the brakes before driving to ensure proper operation.
Q4 What should I do if my brakes are making noise or vibrating?
What should I do if my brakes are making noise or vibrating?
Brake noise or vibration can indicate worn pads, warped rotors, or debris in the braking system. First, inspect the brake pads for wear and replace if necessary. Check the rotors for uneven surfaces or warping, and resurface or replace them as needed. Ensure the calipers are functioning properly and that all components are securely fastened. If issues persist, consult a professional mechanic for a thorough diagnosis.
Q5 How can I optimize the performance of my brakes?
How can I optimize the performance of my brakes?
To optimize brake performance, use high-quality brake pads and rotors designed for your vehicle. Regularly inspect and maintain the braking system, including fluid levels and caliper function. Avoid aggressive driving, which can lead to overheating and premature wear. Consider upgrading to performance brake components if you frequently tow or drive in challenging conditions. Always follow the manufacturer's recommendations for maintenance and replacement intervals.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1994-2004 GMC Sonoma Service Manual
Coming SoonComprehensive guide covering all aspects of vehicle maintenance, including brake systems, for the 1994-2004 GMC Sonoma.
Brake System Technical Bulletin
Coming SoonTechnical service bulletin addressing common brake system issues and updates for the 1994-2004 GMC Sonoma.
GMC Sonoma Brake Parts Catalog
Coming SoonDetailed catalog of brake parts and accessories specifically designed for the 1994-2004 GMC Sonoma.
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Technical Information
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