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REBUILT ECM for 1999 Cadillac Escalade 5.7L 16263494, 16263494

Mak’s ECM Rebuilders is a premium supplier of new and rebuilt Cadillac PCM. We provide only the best new and rebuilt Powertrain Control Modules for your 1999 Cadillac Escalade, that are available on the internet. Our PCM technicians have years of experience building, repairing, and rebuilding automotive computers. Combine this with our state-of-the-art PCM testing and rebuilding equipment and you have a final product that is second to none.

This REBUILT OEM PCM fits the following vehicles:

  • 1999 Cadillac Escalade – 5.7L

Supported Trims: Base


SKU 16263494-191-REBUILT Category Tags , , , ,



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Availability: Only 2 left in stock

  • Enter Your 17-digit VIN

    VIN is required for programming, if you do not provide your VIN, the part cannot be programmed and may not be suitable for your vehicle.

Convert your purchase to a rental within 30 days if the part is not the real problem. Check our Warranty Information & Returns Policy for details.

REBUILT 16263494 / P16263494 OEM ECM PCM ECU for 1999 Cadillac Escalade with 5.7L Engine. The Engine Computer, also known as the Engine Control Module (ECM), Engine Control Unit (ECU), and Powertrain Control Module (PCM), all refer to the same component with the same functionality.

  • Rebuilt OEM Powertrain Control Module (PCM)Warranty Badge
  • 1-Year Replace or Repair Warranty
  • Optionally extend your warranty at checkout to up to 3 years
  • Free Shipping via Fedex Ground (4-5 Days) or USPS Priority Mail (2-3 Days)
  • Unlimited Free Telephone Support

Interchangeable Part Numbers:

This PCM is 100% compatible with and supersedes PCMs bearing any of the following Part Numbers:

Firmware Revisions: 16263494

Hardware Codes: 16263494

Hollander Part Number: 590-05454

The Hardware Code is a number assigned to an PCM during initial manufacturing. It is the “platform” onto which firmware specific to your vehicle / powertrain is then loaded. Always seek to purchase the latest Firmware Revision of your original PCM. 

Part Number Notes: 

  1. The last two alpha characters in PCM Part Numbers refer to the firmware revision. We will ship you the latest revision which is backward-compatible with all prior revisions.
  2. The presence or absence of a leading zero as the first character in the part number is not significant. It may appear on your old PCM with or without a leading zero.
  3. Your old PCM may show a “P”, or “P/N” in front of the part number. This is merely a field heading on the sticker that means “Part Number” and is not significant.

MAK’s stands behind everything we sell and you are always just a free phone call away from a live expert who knows PCMs!

+1 (818) 798-5558