Replace your failed engine computer with an OEM 2010-2011 GMC Terrain 2.4L / 3.0L ECM (also called a PCM or ECU), programmed to your vehicle before it ships.

This module is a direct replacement for units carrying service number 12651993. Every unit is refurbished, bench-tested against OEM specification, and flashed with the latest manufacturer software.

Also fits vehicles whose original module carries any of these interchange numbers: 12616889, 12635821, 12637106, 12637157, 12637489, 12642569, 12642665, 12642843, 12651993

Fitment note: The Terrain shares this module with the Chevrolet Equinox of the same years.

Anti-theft relearn after installation

GM vehicles use a factory anti-theft system. Once the module is fitted the vehicle may not start immediately, and a password relearn procedure has to be completed first. It needs no special tools and we include the procedure with your order. This is normal on these vehicles and does not mean the module is faulty.

No core charge, and no core to send back

There is no core charge on this module and nothing to return. Keep your old unit. Where other suppliers offer only a one year replacement warranty on these, yours is covered for as long as you own the vehicle.

Why these modules must be programmed

GM engine computers require programming and setup before they will operate in the vehicle. Several sellers ship these units blank, leaving you to arrange dealer programming. We flash yours to your VIN before dispatch so it arrives ready to fit.

What you receive

• Programmed to your VIN before dispatch, so it installs plug and play
• Bench-tested by our technicians before it leaves us
• Lifetime warranty for as long as you own the vehicle
• Free US shipping, typically delivered in 2-4 business days
• No core charge, no core return required

Common symptoms of a failed Terrain ECM

• Stalling or running rough
• Persistent check engine light that will not clear
• Hard shifting, since the module manages transmission behaviour
• Engine cranks but will not start
• No communication with a scan tool

Before you order

Enter your 17-character VIN at checkout, and read the service number from the label on your existing module if you can. If unsure, call 516-494-7838 and a technician will confirm fitment.