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TENNESSEE · MAIL-IN SERVICE

GPEC2 / 2A / 3 / 4 / 4LM PCM Unlocking in Tennessee

Ship your module from Nashville or anywhere in Tennessee — we complete the work in 24 hours and ship it back at the return speed you choose at checkout — standard to overnight.

$250 flat 24-Hour Turnaround ~2 day USPS from TN
Text Before You Buy

Why Tennessee customers mail in gpec2 / 2a / 3 / 4 / 4lm pcm unlocking

Tennessee has roughly 5.6 million registered vehicles, and trucks, SUVs & imports make up much of what Nashville-area shops and owners mail us. Domestic work like gpec2 / 2a / 3 / 4 / 4lm pcm unlocking runs high-volume across Tennessee — we see a steady stream out of Nashville, Memphis, Knoxville. Cross-region northeast — about 2 days each way.

Metros we serve in Tennessee

NashvilleMemphisKnoxvilleChattanooga

Tennessee at a glance

  • ~5.6M registered vehicles statewide
  • Most common: trucks, SUVs & imports
  • Tennessee discontinued its county emissions testing programs and has no statewide periodic safety inspection.

What you get

  • Module unlocked — tuner software (HP Tuners, EFILive, DiabloSport, Hemituner) can now read + write
  • Original locked-state data archived 90 days
  • No tuning performed — we leave the calibration stock (you tune as you wish after)
  • 24-hour bench turnaround
  • Return shipping your choice at checkout — standard, 2-day, or overnight
  • Photo of completed work

Shipping timeline — Tennessee ↔ Arlington TX

USPS Priority routes northeast through the Central network; typically 2 days. Typical round-trip from Nashville or anywhere in Tennessee:

  1. Day 0

    You ship

    USPS Priority from TN, ~$11

  2. Day 2

    We receive

    Workshop opens + inspects

  3. Day 3

    Work done

    24-hour bench turnaround

  4. ~Day 5

    Back to you

    Return speed you chose at checkout

Tennessee FAQ

Common questions from customers shipping from Tennessee.

How long does shipping take from Tennessee to your Arlington TX workshop?
USPS Priority Mail from Nashville, TN reaches our Arlington workshop in about 2 business days. USPS Priority routes northeast through the Central network; typically 2 days. We start work the same day your module arrives and ship back next business day at the return speed you chose at checkout.
How much does it cost to ship a module from Tennessee?
USPS Priority flat-rate from Tennessee to Arlington TX runs about $11. The customer pays shipping to us; return shipping back to Tennessee is selected at checkout — $14.95 standard (3-5 business days), $29.95 UPS 2-Day, or $74.95 UPS Next Day Air, flat nationwide. Cross-region northeast — about 2 days each way.
Do you accept gpec2 / 2a / 3 / 4 / 4lm pcm unlocking modules from Tennessee?
Yes — we receive modules from Nashville, Memphis, Knoxville, Chattanooga and the rest of Tennessee regularly. With about 5.6 million registered vehicles statewide, trucks, SUVs & imports are the bulk of what we see from Tennessee.
Is there a gpec2 / 2a / 3 / 4 / 4lm pcm unlocking shop in Nashville I should use instead?
Most Nashville shops don't keep the bench equipment for gpec2 / 2a / 3 / 4 / 4lm pcm unlocking — they'd forward the module to a specialist anyway, which adds a markup and a middleman. Going direct to us is usually faster and cheaper. Cross-region northeast — about 2 days each way.
Does Tennessee vehicle inspection or emissions testing affect this service?
Tennessee discontinued its county emissions testing programs and has no statewide periodic safety inspection. Our service is bench module programming only — you remain responsible for your vehicle's compliance with all Tennessee and federal requirements.
Will the unlock be detected by the dealer?
The unlock itself isn't outwardly visible — the module operates identically and reports normally to OBD-II. However, if you flash a non-stock tune AFTER unlocking, the dealer scan tool will see modified calibration values. To return to dealer-detectable-stock state, use our Stock OEM Re-Programming service.
What's the difference between this and your "Stock Re-Programming" service?
Unlock = removes the security so the module can be tuned. Stock Re-Programming = flashes the module back to factory OEM calibration. You'd use unlock BEFORE tuning, and stock re-programming AFTER (e.g., before selling, before warranty work, or after a failed tune).

Full details

See the complete GPEC2 / 2A / 3 / 4 / 4LM PCM Unlocking service page

Compatibility list, what it fixes / doesn't fix, shipping instructions, warranty.

Full Service Page

Same service from other states:

AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMaryland

Ship from Tennessee today

Pay now, get the Arlington TX shipping address by email, drop it in the mail. Full round-trip from Nashville: about a week.

(817) 678-3252