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Old 10-23-2021, 11:40 AM   #2
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Join Date: Jan 2017
Location: Valley, NE.
Posts: 833
Re: Transmission swap 2003 sierra from a 2005 blazer

I believe they both used 4l60e, and a Chevy bell is a Chevy bell, so that should work.
I wonder if the computer stuff is compatible 05 to 03?

1970 GMC Sierra Grande, 2500 Custom Camper 133" wb, 402, 4spd.
2007 GMC Sierra Classic, 3500 SRW 4x4, Crew cab longbox, LBZ Duramax/Allison.
1987 Chevy Suburban 2500, Silverado, 2wd, 454, t-400 with US Gear Under/Over drive.
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