Silverado Body Mount bolt torque - need confirmation

[Mossyoakglock]

Does anybody have access to either AllData or the 2008 Silverado FSM that can confirm the body mount bolt torque?

That number is nowhere in my Haynes manual and the only number I've been able to find in a service manual is 70 ft lbs. Searching online shows a value much lower and that is around 55 ft lbs so I'm hesitant to torque to 70 lbs if that's too much.

The truck is a 2008 Silverado 1500 Crew cab 4wd. Not sure if the radiator mount bushings are more/less that the 6 main body mount bolts either.

[dsr611]

This info is from MS3DALE (works for a GM dealer) and is found in the Vehicle Appearance, Care, and Maintenance subforum...About the 10th post down

 

Quote

Body Mounting Bolt

60 N·m Plus 170 Degrees

44 lb ft Plus 170 Degrees

 

Edited February 8, 2022 by dsr611

[Mossyoakglock]

That's even less than what I had already found online. 44 ft lbs seems really loose for body mount bolts.

Edited February 8, 2022 by Mossyoakglock

[tbarn]

+170 degrees!

[Mossyoakglock]

How much more torque will 170 degrees really provide?

 

That doesn't seem like much more force past 44 ft lbs.

[newdude]

14 hours ago, Mossyoakglock said:

Does anybody have access to either AllData or the 2008 Silverado FSM that can confirm the body mount bolt torque?

That number is nowhere in my Haynes manual and the only number I've been able to find in a service manual is 70 ft lbs. Searching online shows a value much lower and that is around 55 ft lbs so I'm hesitant to torque to 70 lbs if that's too much.

The truck is a 2008 Silverado 1500 Crew cab 4wd. Not sure if the radiator mount bushings are more/less that the 6 main body mount bolts either.

 

11 hours ago, dsr611 said:

This info is from MS3DALE (works for a GM dealer) and is found in the Vehicle Appearance, Care, and Maintenance subforum...About the 10th post down

 

 

 

 

 

GM service manual shows currenty as follows:

 

Body mount bolts - Remove any thread sealants on bolts, apply high strength thread sealant (red loctite), torque to 70 ft.lbs/95Nm.  

 

Radiator support nuts - 52 ft.lbs/70Nm.

 

Radiator support bolts - 52 ft.lbs/70Nm. 

Edited February 8, 2022 by newdude

[dna9656]

There web sites that offer maximum torque specs based on grade and size of the fasteners. These are all the sites I have used and saved.

https://manuals.gogenielift.com/Parts And Service Manuals/data/Service/Stick Booms/SAE and Metric Fastener Torque Specifications.pdf

http://www.torkspec.com/index.aspx

Wrench Conversion Chart  Convert inch-pound to foot pounds - Conversion of Measurement Units

Engineering ToolBox

[Mossyoakglock]

5 hours ago, newdude said:

 

 

 

 

GM service manual shows currenty as follows:

 

Body mount bolts - Remove any thread sealants on bolts, apply high strength thread sealant (red loctite), torque to 70 ft.lbs/95Nm.  

 

Radiator support nuts - 52 ft.lbs/70Nm.

 

Radiator support bolts - 52 ft.lbs/70Nm. 

 

That's awesome. Thanks!

[Brenden Burnham]

4 hours ago, dna9656 said:

There web sites that offer maximum torque specs based on grade and size of the fasteners. These are all the sites I have used and saved.

https://manuals.gogenielift.com/Parts And Service Manuals/data/Service/Stick Booms/SAE and Metric Fastener Torque Specifications.pdf

http://www.torkspec.com/index.aspx

Wrench Conversion Chart  Convert inch-pound to foot pounds - Conversion of Measurement Units

Engineering ToolBox

Great links.  Thanks for sharing.