LLY FICM Mail-In Evaluation

2004–2005 GM Duramax

What This Is

This is a mail-in evaluation for your 2004–2005 Duramax LLY Fuel Injection Control Module.

There is no upfront repair charge.

You send us your module.
We inspect it, test it, and tell you exactly what it needs — if anything.

We do not pre-price repairs based on descriptions, assumptions, or guesses. We evaluate the actual module in front of us.

Repair Pricing

Most LLY FICM repairs fall between $516 and $750, depending on internal condition.

Final pricing is determined after inspection and testing.

You’ll receive a clear quote before any repair work proceeds.

Same-Day Evaluation & Repair

In most cases, evaluation and repair are completed the same day your module arrives.

If the module is approved for repair and no unusual complications are found, we work through inspection, repair, and verification without unnecessary delay.

If something outside the ordinary is discovered, we’ll contact you before proceeding.

We don’t let modules sit on a shelf.

We Don’t Just Repair Boards — We Understand the System

Many companies can repair a circuit board.

Far fewer understand how that board behaves inside an LLY Duramax under real operating conditions.

We work with these systems regularly. We understand how FICM failures present, how codes relate to internal damage, and when the module is actually the issue — and when it isn’t.

We don’t stop at bench testing.

We verify repairs in dedicated Duramax test trucks using live scan-tool data, voltage verification, and real-world operating conditions — not just a powered board on a workbench.

If it leaves here, it has been tested in a running truck.

Not Sure If It’s the FICM?

Call us before you ship it.

If your symptoms or codes don’t point toward the module, we’ll tell you.

If sending it in makes sense, we’ll tell you that too.

You don’t need to bounce between shops guessing. We can help you think it through before you spend time and money shipping parts around.

How We Evaluate Modules

When your module arrives, we:

• Document condition on arrival
• Perform internal inspection and failure analysis
• Run structured bench diagnostics
• Complete approved repairs
• Verify operation in a dedicated Duramax test truck
• Confirm proper function using scan-tool data

When appropriate, we may document testing with photos or video.

We eliminate uncertainty before the module goes back in your truck.

Repair Pricing

Every module is different.

Preventative service and failure-level repairs are not the same thing, and pricing reflects that.

Most work falls within a predictable range, but final pricing is determined only after physical inspection and testing.

You will receive a clear quote before any repair work is completed.

No approval, no repair.

What You’re Paying For Today

At checkout, you are paying for:

• The shipping label to send your module to us

There is no repair charge until we evaluate the module.

Return shipping is invoiced separately once repair decisions are made.

What To Include In The Box

Please include a printed note with:

• Full name
• Phone number
• Email
• Vehicle year
• Make & model
• Trouble codes (if available)
• Symptoms you’re experiencing

This allows us to immediately understand context when the module arrives.

A Few Important Notes

• This is not a flat-rate repair
• This is not an exchange program
• Some modules are repairable, some are not — inspection determines that

If you want a properly verified repair process backed by real-world testing in an actual Duramax truck, you’re in the right place.