The links lead me to believe there are interchangeable. In fact this page confirms the compatible models
https://shiftritetransmissions.com/shop/4l60e_98-05_4x4/
1998-1999 Chevrolet Silverado K1500 4.3L 4X4
1998-1999 Chevrolet Silverado K1500 5.0L 4X4
1998-1999 Chevrolet Silverado K1500 5.7L 4X4
1998-1999 GMC Sierra K1500 4.3L 4X4
1998-1999 GMC Sierra K1500 5.0L 4X4
1998-1999 GMC Sierra K1500 5.7L 4X4
1998-2000 Chevrolet Tahoe 1500 5.7L 4X4
1998-2000 GMC Yukon K1500 5.7L 4X4
1998-1999 Chevrolet Suburban K1500 5.7L 4X4
1998-1999 GMC Suburban K1500 5.7L 4X4
1999-2000 Cadillac Escalade 5.7L 4X4
1999-2000 GMC Yukon Denali 5.7L 4X4
1998-2005 GMC Safari 4.3L 4X4
1996-2005 Chevrolet Astro 4.3L 4X4
1996-2005 Chevrolet Blazer 4.3L 4X4
1996-2001 GMC Jimmy 4.3L 4X4
1996-2001 Oldsmobile Bravada 4.3L 4X4
1998-2001 GMC Envoy 4.3L 4X4
1996-2004 Chevrolet S10 4.3L 4X4
1996-2005 GMC Sonoma 4.3L 4X4
https://www.google.com/search?q=1999+K1500+push+button+transmission+4WD
https://www.google.com/search?q=1999+Chevy+Tahoe+push+button+4WD+transmission+4L60E
1999 - 2006
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