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SOUTH DAKOTA · MAIL-IN SERVICE

GPEC2 / 2A / 3 / 4 / 4LM PCM Unlocking in South Dakota

Ship your module from Sioux Falls or anywhere in South Dakota — 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 ~2-3 day USPS from SD
Text Before You Buy

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

South Dakota has roughly 1.1 million registered vehicles, and full-size pickups & 4x4 SUVs make up much of what Sioux Falls-area shops and owners mail us. Domestic work like gpec2 / 2a / 3 / 4 / 4lm pcm unlocking runs high-volume across South Dakota — we see a steady stream out of Sioux Falls, Rapid City, Aberdeen. Cross-region north — about 2-3 days each way.

Metros we serve in South Dakota

Sioux FallsRapid CityAberdeenBrookings

South Dakota at a glance

  • ~1.1M registered vehicles statewide
  • Most common: full-size pickups & 4x4 SUVs
  • South Dakota has no statewide periodic vehicle safety or emissions inspection program.

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 — South Dakota ↔ Arlington TX

USPS Priority routes north through the Central network; usually 2-3 days given the distance. Typical round-trip from Sioux Falls or anywhere in South Dakota:

  1. Day 0

    You ship

    USPS Priority from SD, ~$12

  2. Day 2-3

    We receive

    Workshop opens + inspects

  3. Day 3

    Work done

    24-hour bench turnaround

  4. ~Day 7

    Back to you

    Return speed you chose at checkout

South Dakota FAQ

Common questions from customers shipping from South Dakota.

How long does shipping take from South Dakota to your Arlington TX workshop?
USPS Priority Mail from Sioux Falls, SD reaches our Arlington workshop in about 2-3 business days. USPS Priority routes north through the Central network; usually 2-3 days given the distance. 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 South Dakota?
USPS Priority flat-rate from South Dakota to Arlington TX runs about $12. The customer pays shipping to us; return shipping back to South Dakota 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 north — about 2-3 days each way.
Do you accept gpec2 / 2a / 3 / 4 / 4lm pcm unlocking modules from South Dakota?
Yes — we receive modules from Sioux Falls, Rapid City, Aberdeen, Brookings and the rest of South Dakota regularly. With about 1.1 million registered vehicles statewide, full-size pickups & 4x4 SUVs are the bulk of what we see from South Dakota.
Is there a gpec2 / 2a / 3 / 4 / 4lm pcm unlocking shop in Sioux Falls I should use instead?
Most Sioux Falls 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 north — about 2-3 days each way.
Does South Dakota vehicle inspection or emissions testing affect this service?
South Dakota has no statewide periodic vehicle safety or emissions inspection program. Our service is bench module programming only — you remain responsible for your vehicle's compliance with all South Dakota and federal requirements.
My module isn't on the list — can you unlock it?
If it's a Chrysler / Dodge / Jeep / Ram GPEC2 or GPEC2A, almost certainly yes — text us the part number to confirm. We add new GPEC variants regularly as Stellantis ships security patches. If we can't unlock yours, we tell you upfront and refund.
Is this legal?
Yes for off-road / racing / non-emissions-vehicle use. Modifying the calibration of an emissions-regulated vehicle for street use violates EPA Clean Air Act regulations. We don't tune; that decision is on you.

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 South Dakota today

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

(817) 678-3252