2004 - 2009 Chevrolet Trailblazer Seat Control Module (OEM)

Buying a replacement seat control module requires careful consideration. Here's what to look for:

Key Considerations:

• Correct part: Make sure the module is designed for your specific vehicle year and model.
• Condition: Decide whether you want a used OEM or a new aftermarket module.
• Warranty: Check if the part comes with a warranty.
• Reputation: Buy from a reputable seller with positive reviews.

Quality Indicators:

| Feature | Used OEM do NOT include any links or URLs in the output What's Included: Typically, the seat control module is the only part included. You may need to reuse existing hardware.

Replacing the seat control module is usually a straightforward process.

Difficulty Level: Easy to Medium Estimated Time: 30 minutes to 1 hour

Special Tools:

• Screwdrivers
• Socket set
• Multimeter (optional, for testing)

Critical Steps & Tips:

1. Disconnect the battery: This is crucial to prevent electrical shorts.
2. Remove the seat: You'll likely need to unbolt the seat from the floor.
3. Locate the module: The module is usually under the seat.
4. Disconnect the wiring harness: Be careful not to damage the connectors.
5. Remove the old module: Unbolt or unclip the module from its mounting bracket.
6. Install the new module: Connect the wiring harness and secure the module.
7. Reinstall the seat: Bolt the seat back into place.
8. Reconnect the battery: Test the seat functions.

DIY vs. Professional Installation: Replacing the seat control module is generally a DIY-friendly task for those with basic mechanical skills. However, if you're uncomfortable working with electrical systems, professional installation is recommended.

When buying a seat control module, you have two main options:

| Feature | Used OEM AND SO ON. What's Typically Included:

• Only the seat control module itself.

Consider replacing these parts at the same time:

• Seat motors: If the seat motor is weak or failing, it can put extra strain on the control module.
• Wiring harness: A damaged wiring harness can cause intermittent problems and damage the module.
• Fuses: Replace any blown fuses with the correct amperage rating.

Replacing these parts can prevent repeat failures and ensure the entire system works properly. A worn seat motor can cause the module to work harder, leading to premature failure.

A seat control module typically lasts for 8-12 years or 100,000-150,000 miles.

Factors Affecting Longevity:

• Environmental conditions: Extreme temperatures and humidity can shorten the module's lifespan.
• Electrical system health: A healthy electrical system protects the module from surges and voltage fluctuations.
• Usage: Frequent seat adjustments can put more wear and tear on the module.
• Water intrusion: Any water damage will significantly reduce lifespan.

The price of a seat control module can vary depending on the source and condition.

• Budget: Used OEM - $50 - $150
• Mid-Range: New Aftermarket - $100 - $250
• Premium: N/A (New OEM not available)

Labor costs for installation typically range from $75 to $150, depending on the shop and the complexity of the job.

Total Job Cost Estimates:

• DIY (Used OEM): $50 - $150 (parts only)
• DIY (New Aftermarket): $100 - $250 (parts only)
• Professional Installation (Used OEM): $125 - $300 (parts and labor)
• Professional Installation (New Aftermarket): $175 - $400 (parts and labor)

Some vehicles in this range, particularly the Buick and Oldsmobile models, have been known to experience issues with water intrusion affecting the seat control module. Check for any signs of leaks around the seat area. There are no known TSBs (Technical Service Bulletins) specifically addressing seat control module failure for all models in this range, but individual models may have related bulletins regarding power seat function.

After installing the new seat control module, it's crucial to verify that it's working correctly.

Confirmation Steps:

1. Test all seat functions: Move the seat forward, backward, up, down, and adjust the lumbar support (if equipped).
2. Listen for smooth operation: The seat motors should operate smoothly and quietly.
3. Check for any error messages: Scan the vehicle's computer for any diagnostic trouble codes (DTCs) related to the seat control system.
4. Ensure proper memory function: If your vehicle has seat memory, program and test the memory settings.

If the seat functions properly and there are no error messages, the installation was successful.

Q: How do I know if it's the seat control module or the seat motor that's bad?
A: If the motor doesn't work when you apply direct power to it, the motor is likely the problem. If the motor works with direct power, the seat control module is likely the problem.

Q: Will a used seat control module need to be programmed?
A: In most cases, no. The seat control module typically doesn't require programming. It should work as soon as it's installed.

Q: Can I replace the seat control module myself?
A: Yes, if you have basic mechanical skills and are comfortable working with electrical systems.

Q: What if the new seat control module doesn't fix the problem?
A: Double-check the fuses, wiring, and seat motors. It's also possible that the replacement module is faulty. Consult a mechanic for further diagnosis.

Q: Is a used OEM module reliable?
A: Used OEM modules are often a good value because they're genuine factory parts that have been tested and inspected. They can be a reliable alternative to new aftermarket parts.

OEM Part Numbers:

• GM: 15135078, 15836142
• Isuzu: 8151350780

Fits Years: 2004 2005 2006 2007 2008 2009