Swap Chevy 1500 over to gmc 2500

Asked by First Jul 11, 2021 at 04:28 PM

Question type: Maintenance & Repair

I have a 1999 Chevy 1500 4x4 ext cab that was hit
in the rear by an SUV the frame is beyond repair I
am about to buy a 2003 gmc 2500 4x4 4 door and
put my motor trans front end and rear end will it fit
easy and work

2 Answers

F_O_R answered 3 years ago

The engine and trans might fit but the rear axle will not. In my state that engine swap would be illegal but check your states laws.

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GuruXLNBJ answered 3 years ago

You may need to use drive shaft from a 1500 crew cab the GMC 4 door is longer than the Chevy ext cab also you will need the ecu from the 99 to control the engine and trans in the 03 2500. 3/4 ton trucks come with LQ4 6.0 liter and 4L80 transmission. If it was me get a LQ9 and transmission with ecu from a wrecked Escalade The 2500 weighs a bit more than 1500. Good luck

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