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2007 GMC Sierra 2500 Classic 4x4
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Discussion Starter · #1 ·
I apologize in advance if this was already answered. I’m new to forums and couldn’t find a write up (if there is one)

Owner before me put in a mishimoto radiator and it is leaking in a few places. I’m more than likely going to go back with an OEM radiator and going to be doing it myself. Is there a how to write up on the radiator replacement for an LBZ?

Also is there any other maintenance/replacing that should be done while I have the radiator out?
 

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2008 Chevrolet 2500HD LTZ, Z71 4x4
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51 Posts
Mishimoto has a life time craftsmanship warranty. I’d give them a call just to see if they can help, they make great stuff. I’m not sure if they will help seeing as you didn’t purchase the radiator but hey it doesn’t hurt to ask.
 

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Mishimoto has a life time craftsmanship warranty. I’d give them a call just to see if they can help, they make great stuff. I’m not sure if they will help seeing as you didn’t purchase the radiator but hey it doesn’t hurt to ask.
I know they’ve got a good warranty but I’ve heard of nothing but failed parts from them, personally.
 

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2008 Chevrolet 2500HD LTZ, Z71 4x4
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I know they’ve got a good warranty but I’ve heard of nothing but failed parts from them, personally.
I hate to admit it but I listened to the hype and was sold an Ecoboost, they are loved over there and no complaints that I have heard. Maybe their stuff just last longer the Ford parts😂.
 

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2007 GMC Sierra 2500 Classic 4x4
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Discussion Starter · #5 ·
Mishimoto has a life time craftsmanship warranty. I’d give them a call just to see if they can help, they make great stuff. I’m not sure if they will help seeing as you didn’t purchase the radiator but hey it doesn’t hurt to ask.
Yea I called and they offered $100 off a new one. But I’ve heard so many people having issues with them leaking I don’t want to go through the trouble of replacing it again lol

So, any how to’s?
 

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2008 Chevrolet 2500HD LTZ, Z71 4x4
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Try youtube. GM service manual just says remove fan and shroud, remove upper and lower radiator hose, bleed hose at the top, radiator bolts, then remove radiator. Sorry no pictures. Mishimoto has a video on YouTube also. Watch them and the you should be good to go.
 

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2007 GMC Sierra 2500 Classic 4x4
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5 Posts
Discussion Starter · #7 ·
Try youtube. GM service manual just says remove fan and shroud, remove upper and lower radiator hose, bleed hose at the top, radiator bolts, then remove radiator. Sorry no pictures. Mishimoto has a video on YouTube also. Watch them and the you should be good to go.
Thanks! Just watched the mishimoto video and it was very in depth. Gonna give it a shot
 

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while you have it out, clean the rest of the cooling stack.
 
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