GDE ECU R&R Instructions - Jeep Garage - Jeep Forum

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Old 09-28-2016, 11:09 PM
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GDE ECU R&R Instructions

I have the instructions from their website but still don't quite understand. I can see the top two bolts for removal but it appears the coolant fluid tank restricts access to the lower bolt? How to gain access?

I guess the best question is...Is there a video or enhanced instructions on how to R&R it? Thanks in advance.

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Old 09-29-2016, 07:42 AM
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Re: GDE ECU R&R Instructions

Sorry, I don't have an answer but I'd like to expand the question a little. Hopefully i'll be going to DC to pick my new ED up in a few weeks and might be bringing the tune with me to install for the trip home. So, could someone also tell us exactly what tools, for example size and type of wrenches or sockets are needed to make the swap? I'm not bringing a toolbox and won't have access to my home tools so need to bring everything needed. Thanks.
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Old 09-29-2016, 08:09 AM
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GDE ECU R&R Instructions

Quote:
Originally Posted by SCMomentum View Post
I have the instructions from their website but still don't quite understand. I can see the top two bolts for removal but it appears the coolant fluid tank restricts access to the lower bolt? How to gain access?



I guess the best question is...Is there a video or enhanced instructions on how to R&R it? Thanks in advance.

Just remove the two bolts that hold the coolant tank in place, move the coolant tank over to the side and take out the bottom ECU bolt first. Then remove the other two bolts. With the correct tools you can R&R the ECU in less than 7 mins. It takes just two sockets, a 1/4" drive ratchet & extension and a small straight-blade screw driver. Can post/share a video if there's interest.
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Old 09-29-2016, 10:53 AM
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Re: GDE ECU R&R Instructions

There's interest:-)
I'm surprised it hasn't already been done.


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Old 09-29-2016, 03:23 PM
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Re: GDE ECU R&R Instructions

Quote:
Originally Posted by SCMomentum View Post
I have the instructions from their website but still don't quite understand. I can see the top two bolts for removal but it appears the coolant fluid tank restricts access to the lower bolt? How to gain access?

I guess the best question is...Is there a video or enhanced instructions on how to R&R it? Thanks in advance.
You can get the bottom bolt without removing the coolant tank, but it's tight. Reach down along side the ECU and come in from under the bottom bolt and up to remove. 8mm I believe. I've removed mine(ECU) (2) times and sent it off to GDE.
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Old 09-29-2016, 05:59 PM
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Re: GDE ECU R&R Instructions

Quote:
Originally Posted by Nordic1 View Post
Just remove the two bolts that hold the coolant tank in place, move the coolant tank over to the side and take out the bottom ECU bolt first. Then remove the other two bolts. With the correct tools you can R&R the ECU in less than 7 mins. It takes just two sockets, a 1/4" drive ratchet & extension and a small straight-blade screw driver. Can post/share a video if there's interest.
What two size sockets? I think I'd rather just move the coolant tank out of the way to get good access.
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Old 09-29-2016, 08:40 PM
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Re: GDE ECU R&R Instructions

ImageUploadedByJeepGarage1475195676.316660.jpg The coolant tank is held in place with two 10mm cap head bolts.

ImageUploadedByJeepGarage1475195908.059831.jpg The ECU is held in place with three 8mm cap head bolts. On the 2014, there are two on the top and one on the bottom. Recommend that you remove the bottom one first.
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Old 09-30-2016, 06:25 PM
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Re: GDE ECU R&R Instructions

My ECU was mounted to a plate that was easily removed from its cradle, for lack of a better term, by depressing the catch and pulling up after the connectors are disconnected of course...the ECU and plate slide out and the bolts are easily accessed without removing anything else. I'll see if I can get some photos. The catch on mine is directly below the outboard catch on the fuse panel cover.
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Old 09-30-2016, 06:31 PM
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Re: GDE ECU R&R Instructions

Actually if you look in the above photo you can see the catch on the far left side of the photo midway down the frame
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