Transmission swap 2003 sierra from a 2005 blazer - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bonestock3ott · 10-22-2021, 10:26 PM

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

Greg58 · 10-23-2021, 11:40 AM

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??

10-22-2021, 10:26 PM	#1
Bonestock3ott Registered User Join Date: Nov 2017 Location: BYRON, NY Posts: 60	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

10-23-2021, 11:40 AM	#2
Greg58 Registered User Join Date: Jan 2017 Location: Valley, NE. Posts: 995	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?? __________________ ________________ 1970 GMC Sierra Grande, 2500 133" wb, 402, 4spd. 2007 GMC 3500 SRW 4x4, Crew cab, Duramax/Allison. (Sold} 1987 Chevy Suburban 2500, Silverado, 2wd, 454, t-400 2023 Chevy Silverado LT 3500, crew cab, longbox, 4x4 Z-71 Duramax.

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