HELP with Hummer H3 ECU
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Junior Member
Joined: Jan 2025
Posts: 1
HELP with Hummer H3 ECU
Greetings all, from Australia and thanks for having me.
I am in serious need of some assistance here. I require a new ECU for my Hummer H3 2007 with the 3.7 Vortec. Unfortunately, as this model is scarce in Australia I am having serious difficulty finding the right ECU.
I have sourced one that is also stating it is suitable for a Cadillac -- I presume this must be for the Alpha -- which we didn't get here. Did all Hummers have the same computer or is the 3.7L different?
12620192 Yrhn 86yrhnm071942jtb Delphi electronics and safety. Servno 12607096 is the part I have sourced but I don't want to get the wrong one.
Can anybody point me in the right direction and/ or the right part number to end my pain and anguish? Thanks in advance.
I am in serious need of some assistance here. I require a new ECU for my Hummer H3 2007 with the 3.7 Vortec. Unfortunately, as this model is scarce in Australia I am having serious difficulty finding the right ECU.
I have sourced one that is also stating it is suitable for a Cadillac -- I presume this must be for the Alpha -- which we didn't get here. Did all Hummers have the same computer or is the 3.7L different?
12620192 Yrhn 86yrhnm071942jtb Delphi electronics and safety. Servno 12607096 is the part I have sourced but I don't want to get the wrong one.
Can anybody point me in the right direction and/ or the right part number to end my pain and anguish? Thanks in advance.
Super Moderator
Joined: Jul 2007
Posts: 13,101
From: Boat Town USA MI
Welcome to HF.
The 2007 PCM (your lingo ECM) is a one only PCM. 2006s and 2008+ all used different PCMs in the US. If getting one from the US you might get one from a 2007 Colorado or Canyon that would work. Yeah, you are going to pay some heavy duty shipping, but you need one. If you buy a used one, you likely will have to program it to your truck.
Go to PCMofNC.com and contact them with questions then buy one once you supply them your vin# etc. so they can program it to your truck. While you are at it, have them performance tune it.
The 2007 PCM (your lingo ECM) is a one only PCM. 2006s and 2008+ all used different PCMs in the US. If getting one from the US you might get one from a 2007 Colorado or Canyon that would work. Yeah, you are going to pay some heavy duty shipping, but you need one. If you buy a used one, you likely will have to program it to your truck.
Go to PCMofNC.com and contact them with questions then buy one once you supply them your vin# etc. so they can program it to your truck. While you are at it, have them performance tune it.
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