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Replacing Shocks - Question

darleyhavidson
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darleyhavidson Enthusiast

darleyhavidson

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Replacing factory Rancho shocks with 5100 series Bilsteins on a 2022 GMC Sierra 2500HD.  Looking at the mounting hardware, can someone tell me what size the large mounting bolts are (bolt head and nut)?  They look over an 1" but I have not crawled underneath the truck to investigage.  I want to ensure I have the proper tools before starting the swap.

 

 

asilverblazer Senior Enthusiast

asilverblazer

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On 3/9/2026 at 10:00 AM, darleyhavidson said:

Replacing factory Rancho shocks with 5100 series Bilsteins on a 2022 GMC Sierra 2500HD.  Looking at the mounting hardware, can someone tell me what size the large mounting bolts are (bolt head and nut)?  They look over an 1" but I have not crawled underneath the truck to investigage.  I want to ensure I have the proper tools before starting the swap.

They are metric - should be a 19mm.

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