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12703686 - 2021 Chevrolet Silverado 1500 2500 3500 5.3L PCM ECM ECU Engine Computer

12703686 - 2021 Chevrolet Silverado 1500 2500 3500 5.3L Engine Computer PCM ECM ECU
$299.00$598.0050% Off
Exact fit for:
Year:2021
Make:Chevrolet
Model:Silverado
Engine Size:5.3L
Part Number:12703686
Hardware Number:12698090, 12703681, 12721317, 12716914
  • Plug & Play
  • VIN Programmed
  • Lifetime Warranty
Replacement OEM Engine Computer (ECM,ECU,PCM) for a 2021 Chevrolet Silverado 1500 2500 3500 5.3L
All modules are VIN programmed, flashed and updated with the latest dealer software to improve drivability and fuel mileage.

ACR remanufactured units come with a Limited Lifetime Warranty (Made in the USA)

Expedited shipping options available

Free Shipping to the lower 48 states

No core required with purchase

How This Works:
Simple. Your module will be VIN programmed specifically to your vehicle for a "Plug & Play" Hassle-Free Installation allowing you to avoid heavy dealer cost and fees. However, you will need to perform a simple step by step Key Relearn procedure on the vehicle once you receive the new ECU from us. This can be done with a scantool or local locksmith.

CLICK HERE FOR PROCDURES ON "HOW TO REPROGRAM IMMOBILZER"

Common Issues related to a faulty module:
  • Check Engine Light (CEL)
  • False Engine Codes
  • Engine Stalling Or Misfiring
  • Engine Performance Issues
  • Vehicle Not Starting
  • No Injector Pulse
  • Charging Issues
  • Poor Fuel Economy


NOTE: 2021 Chevrolet Silverado 1500 2500 3500 5.3L Engine Computers are also referred to as a Powertrain Control Module (PCM), Engine Control Module (ECM) and Engine Control Unit (ECU).
  • 2021 Chevrolet Silverado 1500 2500 3500 5.3L PCM
  • 2021 Chevrolet Silverado 1500 2500 3500 5.3L ECM
  • 2021 Chevrolet Silverado 1500 2500 3500 5.3L ECU
  • 2021 Chevrolet Silverado 1500 2500 3500 5.3L Brain
  • 2021 Chevrolet Silverado 1500 2500 3500 5.3L Computer
All Items undergo remanufacturing, vehicle specific programming and testing on a per order basis. Processing time is 1-3 Full business days (Mon-Fri, excluding Holidays). Orders received after 2pm EST will begin processing the following business day. Parts are shipped in the order they are received with the shipping service selected during checkout. Tracking information will be sent via email at the time of shipment readiness.

We accept returns as long as the part is in its original condition. Returns must be mailed within 14 calendar days from original delivery. All approved returns will be initiated in the form of a refund to the original form of payment. There will be a 30% restocking fee to cover vehicle specific programming & testing and all shipping charges will be deducted. (Free shipping charges are $18.99 each). Refund deposits take 4-6 business days. Full refund will be issued for cancellations prior to shipment only.
We offer a standard Lifetime warranty on all computers purchased through this site. Some listings require your core to be returned to activate said warranty within 14 days whereas a return label will be provided. Failure to return the core if required will result in loss of warranty and you will be subject to a core charge.

This warranty does not cover parts that fail due to abuse, misuse, neglect, alteration, impact, or accident. All Computer Resources, Inc. reserves the right to deny warranty coverage if the company deems that it is not responsible for damages. Please see our tech talk bulletins for proper installation and diagnoses. Automotive modules can be damaged by various electrical faults during and after installation which will not be covered.

All units are fully tested for functionality prior to shipment.

Full Warranty Information

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