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Old 10-22-2021, 10:26 PM   #1
Bonestock3ott
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Join Date: Nov 2017
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Transmission swap 2003 sierra from a 2005 blazer

Question for those that know these GM transmissions. Transmission in 03 sierra lost reverse. Was given a tranny from a 05 s10 blazer. If the blazer tranny will mount to the XCase,
Will this tranny work in the sierra? Sierra has 5.3 liter engine so I would at least need to swap the bell housing . Thanks
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Old 10-23-2021, 11:40 AM   #2
Greg58
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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?
Hatzie??
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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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