Buick LaCrosse 2005-2009 Electrical Specifications
Explore detailed electrical specifications for the 2005-2009 Buick LaCrosse, including wiring diagrams, fuse box layouts, and alternator output. Ideal for repairs, maintenance, and upgrades.
Overview Specifications
This document provides detailed electrical specifications for the 2005-2009 Buick LaCrosse. It includes information on the vehicle's battery, charging system, lighting, and electronics. Use this guide to understand the electrical components, troubleshoot issues, and perform maintenance. The 'HowTo' section explains how to search and navigate the document efficiently. Sections are organized to help you find specific information quickly, and the 'Quick Reference' section highlights key specifications.
How to Use
Use the search function by entering keywords related to the electrical component or system you are looking for. This will help you locate specific sections or details within the document.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is clearly labeled to help you find the information you need.
Key Specifications
Battery Voltage
12V
Alternator Output
120-140A
Headlight Type
H11/Low Beam
Radio Type
AM/FM/CD
Power Window Motor
12V DC
Available Specifications
Battery
This section covers the specifications and details related to the battery system of the 2005-2009 Buick LaCrosse. It includes information on battery type, capacity, and maintenance.
Battery
This section covers the specifications and details related to the battery system of the 2005-2009 Buick LaCrosse. It includes information on battery type, capacity, and maintenance.
Battery Type and Capacity
- 12V lead-acid battery
- Cold Cranking Amps (CCA): 650
- Reserve Capacity (RC): 120 minutes
- Group size: 75
- Maintenance-free design
- Terminal type: SAE post
Battery Maintenance
- Regularly check battery terminals for corrosion
- Ensure proper battery mounting and hold-down
- Test battery voltage periodically
- Replace battery every 3-5 years
- Inspect battery case for cracks or damage
Charging System
This section provides details on the alternator and charging system of the 2005-2009 Buick LaCrosse. It includes specifications and maintenance tips for the alternator and related components.
Charging System
This section provides details on the alternator and charging system of the 2005-2009 Buick LaCrosse. It includes specifications and maintenance tips for the alternator and related components.
Alternator Specifications
- Output: 120-140 amps
- Voltage regulator: Internal
- Pulley type: Serpentine
- Belt size: 6PK2320
- Alternator type: Denso
Charging System Maintenance
- Inspect alternator belt for wear and tension
- Check alternator output voltage
- Ensure proper wiring connections
- Test for voltage drops in charging circuit
- Replace alternator if output is below specification
Lighting System
This section covers the lighting system of the 2005-2009 Buick LaCrosse, including headlights, taillights, and interior lighting. It provides details on bulb types and replacement procedures.
Lighting System
This section covers the lighting system of the 2005-2009 Buick LaCrosse, including headlights, taillights, and interior lighting. It provides details on bulb types and replacement procedures.
Exterior Lighting
- Headlights: H11 (low beam), 9005 (high beam)
- Taillights: 3157 (brake/turn signal)
- Fog lights: H3
- License plate light: 168
- Side marker lights: 194
Interior Lighting
- Dome light: 578
- Map lights: 168
- Trunk light: 211-2
- Glove box light: 74
- Vanity mirror lights: 29mm festoon
Electronics
This section details the electronic systems in the 2005-2009 Buick LaCrosse, including the infotainment system, power accessories, and diagnostic tools.
Electronics
This section details the electronic systems in the 2005-2009 Buick LaCrosse, including the infotainment system, power accessories, and diagnostic tools.
Infotainment System
- AM/FM radio with CD player
- Optional navigation system
- Bluetooth connectivity
- Auxiliary input jack
- Steering wheel audio controls
Power Accessories
- Power windows with one-touch down
- Power door locks with remote keyless entry
- Power adjustable driver seat
- Power sunroof (optional)
- Power mirrors with heating
Search Specifications
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Component Specifications
Overview
- Type
- 12V DC Electrical System
- Configuration
- Negative Ground
- Battery Type
- Lead-Acid, Maintenance-Free
- Alternator Output
- 140 Amps
- Wiring Harness
- Color-Coded
Dimensions
- Battery Length
- 10.24 in (260 mm)
- Battery Width
- 7.01 in (178 mm)
- Battery Height
- 7.68 in (195 mm)
- Alternator Diameter
- 5.12 in (130 mm)
- Alternator Length
- 7.09 in (180 mm)
- Fuse Box Dimensions
- 6.3 x 4.7 x 2.0 in (160 x 120 x 50 mm)
- Wiring Harness Length
- 15.75 ft (4.8 m)
Materials
- Battery Case
- Polypropylene
- Alternator Housing
- Aluminum Alloy
- Wiring Harness
- Copper with PVC Insulation
- Fuse Box
- Thermoplastic
- Connectors
- Nylon with Brass Contacts
Features
- Lighting
-
- Halogen Headlights
- LED Taillights
- Automatic Headlight Control
- Daytime Running Lights
- Power Distribution
-
- Central Fuse Box
- Relay-Controlled Circuits
- Smart Charging System
- Battery Saver Mode
- instrumentation
-
- Digital Instrument Cluster
- Trip Computer
- Low Fuel Warning Light
- Battery Voltage Display
- Convenience
-
- Power Windows
- Power Door Locks
- Remote Keyless Entry
- Electrically Adjustable Seats
- Safety
-
- ABS Warning Light
- Airbag System Indicator
- Tire Pressure Monitoring System
- Security System LED
Safety Features
- Circuit Protection
-
- Fuse Protection
- Circuit Breakers
- Overload Protection
- Grounding
-
- Multiple Ground Points
- Insulated Ground Straps
- Wiring
-
- Flame-Retardant Insulation
- Weatherproof Connectors
Comfort Features
- Climate Control
-
- Automatic Temperature Control
- Rear Defogger
- Heated Seats
- Entertainment
-
- AM/FM Radio
- CD Player
- Auxiliary Input
- Lighting
-
- Interior Dome Light
- Map Lights
- Ambient Lighting
Accessories
- Exterior
-
- Fog Lights
- Chrome Door Handles
- Rear Spoiler
- interior
-
- Floor Mats
- Cargo Organizer
- Seat Covers
- Audio
-
- Subwoofer
- Amplifier
- Satellite Radio
Maintenance
- Service interval
- Every 12 months or 12,000 miles
- Service Items
-
- Battery Terminal Cleaning
- Alternator Belt Inspection
- Fuse Box Check
- Wiring Harness Inspection
- Ground Connections Check
- Maintenance Notes
- Ensure all electrical connections are secure and free of corrosion.
Warranty
- Battery Warranty
- 36 months / 36,000 miles
- Alternator Warranty
- 60 months / 60,000 miles
- Electrical System Warranty
- 36 months / 36,000 miles
- Accessory Warranty
- 12 months / 12,000 miles
- Warranty Terms
- Coverage includes defects in materials and workmanship.
Production Details
- Manufacturer
- Delphi Automotive
- Manufacturing Process
-
- Automated Assembly
- Quality Testing
- Environmental Sealing
- Quality Control
- Testing: 100% Electrical Load Testinginspection: Visual and Functional Checks
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Production
- Production Metrics
- Annual Output: 500,000 UnitsDefect Rate: 0.1%
Service Information for Electrical System Service
Maintenance and service requirements specific to the electrical system
- Inspect battery terminals for corrosion
- Check alternator belt tension
- Test battery voltage
- Inspect wiring harness for damage
Ensure all electrical connections are clean and tight.
- Replace battery if necessary
- Inspect alternator output
- Check fuse box for blown fuses
- Test ground connections
Use a multimeter to verify proper voltage levels.
- Replace alternator belt
- Inspect all electrical connectors
- Test charging system performance
- Check lighting system functionality
Major service may require specialized diagnostic tools.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the technical specification for the electrical system in the 2005-2009 Buick LaCrosse?
What is the technical specification for the electrical system in the 2005-2009 Buick LaCrosse?
The 2005-2009 Buick LaCrosse features a body control module (BCM) that manages various electrical systems, including lighting, wipers, and power windows. The battery is a 12V maintenance-free type, and the alternator is rated at 150 amps. The electrical system operates on a CAN (Controller Area Network) bus communication protocol for efficient data transmission between modules.
Q2 What are the recommended maintenance requirements for the electrical system?
What are the recommended maintenance requirements for the electrical system?
Regular maintenance includes checking the battery terminals for corrosion, ensuring all electrical connections are secure, and replacing the air filter every 15,000 miles. Additionally, inspect the alternator belt every 30,000 miles and replace it every 50,000 miles. Always use OEM or equivalent parts to maintain system performance.
Q3 How do I replace the battery in my 2005-2009 Buick LaCrosse?
How do I replace the battery in my 2005-2009 Buick LaCrosse?
1. Open the hood and locate the battery on the driver's side. 2. Disconnect the negative (black) cable first, followed by the positive (red) cable. 3. Remove the battery hold-down clamp and lift the battery out. 4. Install the new battery, ensuring it is securely held by the clamp. 5. Reconnect the positive cable first, then the negative cable. 6. Close the hood and start the engine to test the electrical system.
Q4 What are common electrical issues and how do I troubleshoot them?
What are common electrical issues and how do I troubleshoot them?
Common issues include dimming lights (possible alternator failure) or non-functional power windows (fuses or switches). Use a multimeter to check voltage at the battery (should be 12.4V-12.7V when off). For window issues, inspect fuses 13 and 24 in the instrument panel fuse box. Consult the owner's manual or a professional if problems persist.
Q5 How can I optimize the performance of my vehicle's electrical system?
How can I optimize the performance of my vehicle's electrical system?
Optimize performance by minimizing accessory load (e.g., turning off unused lights or electronics). Regularly clean ground wires and connections to ensure proper current flow. Consider upgrading to a high-capacity alternator if you frequently use power-hungry accessories like amplifiers or lighting upgrades.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2005-2009 Buick LaCrosse Service Manual
Coming SoonComprehensive guide covering diagnostics, repairs, and maintenance for all systems, including electrical.
GM Technical Bulletin - Electrical System Updates
Coming SoonContains updates and repairs for known electrical issues in the 2005-2009 Buick LaCrosse.
Buick LaCrosse Parts Catalog
Coming SoonDetailed listing of OEM parts for electrical and other systems, including diagrams and part numbers.
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Technical Information
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