Restore your Duramax performance with a professional FICM Repair Service designed specifically for 2001–2005 Chevy and GMC 6.6L Duramax trucks. If your truck is showing symptoms like long crank, rough idle, injector voltage issues, or the notorious FICM trouble codes, this service brings your original module back to full working condition without the cost of dealership replacement. Our repair process replaces failed high-load components inside the Fuel Injection Control Module, restoring proper injector drive voltage and improving cold-start behavior, throttle response, and overall drivability.
The FICM on a 6.6 Duramax is responsible for delivering precise voltage to the injectors. When the internal circuitry starts to fail, the truck becomes increasingly difficult to start, idles poorly when cold, loses power under load, or may not start at all. Many owners notice the first signs during cold weather, after a weak battery incident, or following long-term heat exposure. Instead of replacing the entire module, our Duramax FICM repair service provides a cost-effective, long-lasting solution that restores reliability and prevents further injector strain.
Common Symptoms of a Failing Duramax FICM
- Hard starting when the engine is cold
- Long crank or complete no-start condition
- Rough idle that smooths out as the engine warms
- Loss of power, hesitation, or stumbling under acceleration
- Check Engine Light / DTCs such as P0611 (FICM Performance)
- Random misfires or intermittent injector circuit codes
These symptoms are extremely common on early Duramax trucks due to factory FICM design limitations. Our repair replaces the components that typically fail, ensuring a more durable and heat-resistant module that maintains consistent voltage output.
What This FICM Repair Service Includes
- Comprehensive inspection of the FICM board and injector driver circuits
- Replacement of failed or weak internal components using upgraded parts
- Reflow and reinforcement of high-stress solder points
- Final testing under operating load to verify proper voltage output
- No programming required — reinstall and start your truck
- Fast turnaround (2–3 business days)
- 4-month warranty on the repair
Once repaired, your FICM can deliver stable injector voltage again, improving consistency in fuel delivery and ignition timing. Many customers report easier cold starts, smoother idle, and better throttle response immediately after reinstalling their module.
Compatible Duramax Models
This service is compatible with all 2001–2005 6.6L Duramax engines, including:
- 2001 Chevrolet Silverado 2500HD / 3500
- 2002 Chevrolet Silverado 2500HD / 3500
- 2003 Chevrolet Silverado 2500HD / 3500
- 2004 Chevrolet Silverado 2500HD / 3500
- 2005 Chevrolet Silverado 2500HD / 3500
- 2001–2005 GMC Sierra 2500HD / 3500
Supported Part Numbers
- 97303751
- 8973037510
- 12210729
- 810-1051
- Other compatible Duramax FICM part numbers may apply
Why Repair Instead of Replace?
Dealership pricing for a replacement Duramax FICM is extremely high, often requiring reprogramming, additional labor, and downtime. Our repair service keeps your truck’s original module and avoids unnecessary coding. Reusing the original FICM helps preserve compatibility with the ECM and injector trim values while saving hundreds of dollars. For most truck owners, a professional repair is all that’s needed to restore full performance.
Recommended Additional Maintenance
If your truck still has the original batteries or alternator, weak voltage supply can accelerate FICM wear. We recommend testing your charging system and replacing any weak components. Keeping clean electrical grounds on the engine and frame also helps ensure long-term module stability.
Turnaround & Shipping
Once your module arrives, we complete the repair within 2–3 business days. We return the module ready to install — no reprogramming, reflashing, or injector relearn required. Simply plug in your restored FICM and start the engine.
Service Guarantee
Your repair is protected by a 4-month warranty covering components replaced during the service. If a problem reappears within the warranty period, we’ll reservice the module at no additional cost.
Restore your Duramax the right way — with a proven FICM repair service designed to save money, reduce downtime, and keep your 6.6 Powerstroke performing at its best.
Please ship your module to the following address:
Module Repair Lab
8698 Elk Grove Blvd Ste 1, Elk Grove, CA 95624
Make sure to include your contact information and order number inside the package to help us process your repair quickly.
We recommend using a trackable and insured shipping method to ensure safe delivery. Once your repair is complete, we will ship it back to the return address you provide.
If you have any questions, feel free to contact us.
How it Works
We offer a cost-effective solution to pricey dealership part replacements, saving you a significant amount of money. Our approach goes beyond simply repairing the faulty part – we address the underlying issue and use top-quality upgraded parts to ensure a long-lasting fix. We stand behind our service with a 100% satisfaction guarantee or your money back.
- To get started, carefully remove the part from your vehicle. If you’re unsure how to do this, you can take it to your local body shop for assistance.
- Once the part is removed, pack it securely in a suitable box to prevent any damage during transit.
- Don’t forget to print out your order confirmation page and include it in the package, along with your name, return address, and phone number
FAQs
8698 Elk Grove Blvd #1, Elk Grove, CA 95624
info@modulerepairlab.com
Turnaround time is fast—typically 2 to 3 business days once we receive your module.
You can pay on the website with PayPal or a credit card or you can send the module in with your information and we will contact you for a credit card after the repairs have been performed.
Yes, warranty depends on the module being repaired.