GM

2002 GMC Envoy Chevy Trailblazer Bravada 4.2L Engine Computer ECM OEM 12571178

Only 1 left
SKU: 78594
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• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price $71.99
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Product details

  • Condition Used – See Description
  • SKU 78594
  • Barcode 407329378198
Koskowski Automotive, LLC
Family-Owned Since 1972  •  Fulton, NY  •  Light Trucks & SUV Specialists
BBB A+ Rated 50+ Years Experience Truck & SUV Specialists
Used – OEM Pull Inspected & Tested Before Listing  •  Fast Shipping  •  30-Day Returns

Here we are offering an Engine Brain Box that was removed from the following donor vehicle:

  • Stock Number: NOF
  • Model: ENVOY 2002
  • VIN:
  • Odometer: 99999 Miles
  • Tag: 0000054960
  • Part Comments: 02 ENVOY 16255240 SERV 12571178

Condition Description:

Pulled from a running vehicle and working when removed, unless noted otherwise in this listing. This is a used OEM GM/Delphi engine control module (ECM) from a 2002 GMC Envoy 4.2L. Label: 16255240, SERV NO 12571178, code YBRY. Connector pins look straight and clean; light oxidation on the aluminum case and rust staining in two mounting bolt bosses. Match the part number on your original module. The ECM must be programmed to your VIN (and may need the theft/security relearn) by a dealer or shop with a scan tool. The part shown in the images is the exact item we will ship you. Please review all images and ask questions before buying.


What this is: The engine control module (engine computer) from a 2002 GMC Envoy 4.2L inline-six; Hollander lists it for 2002 Envoy, Envoy XL, TrailBlazer, TrailBlazer EXT and Bravada.

Part numbers:

  • 12571178 - GM service number (SERV NO) on the label (discontinued by the manufacturer)
  • 16255240 - GM part number on the label (discontinued by the manufacturer)
  • YBRY - Broadcast code on the label
  • 590-6336 - Hollander interchange number

How to match your original: Match 16255240 / SERV NO 12571178 on the label on the edge of your original module and the three connector headers. Must be VIN programmed.

Condition:

  • Label legible (photo 11)
  • Connector pins straight (photos 5-9)
  • Rust staining in two bolt bosses (photos 1, 2)
  • Light oxidation on case

Interchange:

Also fits the following models:

CHEVROLET TRAILBLAZER 2002 - 2002 Engine Control Module ECM; Electronic Control Module; (LH engine)
GMC ENVOY 2002 - 2002 Engine Control Module ECM; Electronic Control Module; (LH engine)
GMC ENVOY XL 2002 - 2002 Engine Control Module ECM; Electronic Control Module; (LH engine)
OLDSMOBILE BRAVADA 2002 - 2002 Engine Control Module ECM; Electronic Control Module; (LH engine)


Hollander interchange 590-6336 fits:

  • Chevrolet Trailblazer 2002: Electronic Control Module; (LH engine)
  • Chevrolet Trailblazer EXT 2002: Electronic Control Module; (LH engine)
  • GMC Envoy 2002: Electronic Control Module; (LH engine)
  • GMC Envoy XL 2002: Electronic Control Module; (LH engine)
  • Oldsmobile Bravada 2002: Electronic Control Module; (LH engine)

Pulled from a running vehicle and working when removed, unless noted otherwise in this listing.

Match the part number on your original module: 12571178

Interchange Notes:

Please verify the interchange of this part using the pictures and part numbers (when possible) that have been provided before purchasing this item. You may also want to contact your local dealer to verify the fitment of this part. We are sorry, we have no written interchange for this part and have offered the above interchange as a suggestion and we urge you to verify before buying. If you have any questions, need more pictures, or have any doubt this is like your part, please don't buy it. We want to sell you the right part, so feel free to contact us! This may fit other years and models as well!

Why Buy From Koskowski Automotive
Inspected Before Listing
Every used part is cleaned and inspected. What you see in the photos is what you get.
Fast Shipping
Ships within 1–2 business days. Carefully packaged to prevent damage in transit.
30-Day Returns
Returns accepted within 30 days. Message us first — we’ll make it right.
Family-Owned Since 1972
50+ years serving vehicle owners, DIY mechanics, and repair shops.
Real Support
Have a question? Message us before or after buying — we respond fast.
BBB A+ Rated
Trusted seller with thousands of transactions and a proven track record.
Shipping & Returns
Handling Time
1–2 Business Days
Return Window
30 Days
Return Shipping
Buyer Pays
Restocking Fee
None
Compatibility returns: If a part does not fit your vehicle, please message us before opening a return. We may be able to help identify the correct part or resolve the issue quickly.
Koskowski Automotive, LLC  •  Fulton, NY  •  Family-Owned Since 1972
Light Truck & SUV Specialists  •  BBB A+ Rated  •  4-Acre Salvage Yard  •  200–500 Vehicles in Stock
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