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So I’ve been looking at the diesel suburban option for about 6 months. Reading forums, looking at burbs for sale, and of course watching videos from Eric (who is 30 minutes down the road from me). I have a few questions about building it yourself.

One thing i have learned from Eric is that GM builds on the same frame across the truck/SUV line.

My question is, instead of doing an engine swap, could you not just put the body of a 2016-2018 suburban onto a 2016-2018 2500 connect the connections (Simplistic terms I know) and be ready to go vs pulling the engine ect and putting it on the 1500 frame.
 

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LHN...We ARE the Joneses
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IIRC, the HD frame with the Dmax differs from the 1500/tahoe/suburban frame.
 

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LHN...We ARE the Joneses
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Bigger brakes and beefed up axles....makes the 2500 SUBURBAN frame into the 3500 'Burb frame. While he mentions a 1500 body is the same, they're talking about the 1500 burb.

It's not the HD frame. Body mounts are different, IIRC.
 

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LHN...We ARE the Joneses
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While you may be able to move some body mounts, I think the main hindrance is where the frame bends/steps up in height being different, with the Burb more aft than the pickup.
 
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