Jump to content

5.3 lifter replacement torque spec

Swervin Erv

By Swervin Erv
in Engines & Drivetrain

 Share

Recommended Posts

Swervin Erv New Member

Swervin Erv

Posted
Posted (edited)

I have a 2015 GMC Sierra 5.3 C engine; replacing some lifters and need to know the head bolt touque specifications.  Can anyone help?

Edited by 99silveradoz71
M1ck3y Senior Enthusiast

M1ck3y

Posted
Posted
On 7/26/2020 at 2:14 PM, Swervin Erv said:

I have a 2015 GMC Sierra 5.3 C engine; replacing some lifters and need to know the head bolt touque specifications.  Can anyone help?

Its not that simple. do you have it apart already.

Swervin Erv New Member

Swervin Erv

Posted
  • Author
Posted

Oh yeah, and ready to go back up with it.  Had a stuck lifter on #7 cylinder , I guess this AFM systm is hard on them.  I almost started o do a complete DOD delete on it.  It is my grandson's truck he  JUST bought  and had this running problem and a tune didn't fix it.  He  is in a rush for it,  I got a hold of the dealer he bought it at and they were helpful and gave me the head bolt torgue specs.  They were

1.  59 ft lb  then 90degree  and 60degree final torque.     It has been an experience not like the older cars .

flyingfool Senior Enthusiast

flyingfool

Posted
Posted (edited)

call up your chevy dealer they'll tell you.   I like to do a stage torque pass in 3rds, before hitting the final torque spec. then do the final degree torque  pass

 

i would suggest switching to 5w-30  or 5w-40 oil , stop using the watered down 0w-20 stuff,  

Edited by flyingfool
hollywoodsle Enthusiast

hollywoodsle

Posted
Posted (edited)

 

Sorry it's grabbing both of my screens ignore the top portion

 

 

image.png

Edited by hollywoodsle
amxguy1970 Senior Enthusiast

amxguy1970

Posted
Posted
1 hour ago, flyingfool said:

call up your chevy dealer they'll tell you.   I like to do a 3 stage torque pass before hitting the final torque spec. then do the final degree torque  pass

 

i would suggest switching to 5w-30  or 5w-40 oil , stop using the watered down 0w-20 stuff,  

So with how tiny the passages are and how the oil is vital to access and control you suggest going thicker versus the hundreds of thousands of hours of testing with engineers who have degrees specifically in the field and have been working and testing specific failures and results? ?  It isn't like tolerances have gotten much tighter over the years since 5-30 was the norm ? Kind of wondering about your name now...

 

Tyler

flyingfool Senior Enthusiast

flyingfool

Posted
Posted (edited)

gm engineers built a great product, GM analyst come up with ways to limit the lifespan of the trucks, so you go buy another one in 5-8 years, instead of keeping the truck for 30 years

 

one example is the trans t-stat that is wreaking havock on these trucks and thier reliability  to function over 80,000 miles

Edited by flyingfool

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • KARNUT
      OCI, not when but why?

      By KARNUT · Posted

      So any kind of deviation is not permitted. Even if it manages to touch on Oils Chain intervals only if, it addresses your latest threat. Boring.😴 
    • Jus Cruisin
      Tonneau cover that does not leak water

      By Jus Cruisin · Posted

      The tailgate of pickups is not designed to be water tight. There are seal kits for them but I doubt they work effectively. But, I've not tried them. I always have hard folding tonneau covers and the BakFlip brand has been my favorite. And, for the most part, the bed stays dry. I would invest in some bins that can be closed to better protect sensitive stuff. 
    • parthery
      Tonneau cover that does not leak water

      By parthery · Posted

      A properly installed tonneau will keep out 95% of the water.  As others have said, the only way to be completely dry is to either get a topper or an SUV.   I've run virtually all the trifolds and hard rolling that are out there.  My thoughts:   1.)  The leak points of any cover will be the front corners, and around the tailgate.   They will also leak if the rails are not installed properly.  If you take a electric/cordless ratchet and snug down the clamps, you run the risk of overtightening which causes the rails to sag.  When the rails sag it creates a gap between the rail and the bed cap and this lets water in.   2.)  Different manufacturers use different methods to try and seal the front.  The "driest" setup is probably the Leer HF650M, which uses double seals all the way around and doesn't require a foam seal across the front edge of the bed.  The Realtruck trifold covers (Bak, Undercover, Gator, etc...) all use a foam seal across the front, and drain tubes.   3.)  Realtruck has standardized the way that the cover attaches to the rail.  With the exception of the Extang Endure ALX, all other Realtruck covers use a plastic clamp which slides into a channel, hooks onto the edge of the rail, and tightens down. The "Realtruck Advantage" covers sold by GM dealers as an OEM accessory still use the "bolt through the panel" installation method.  Problem with these is over time, water gets past the rubber seal, into the panel, and once they become waterlogged they begin to delaminate (and weigh a ton.)   4.)  Unless you are using GM Rewards points, buy your cover separately.  Realtruck offers a 5 year warranty on BAK, Undercover and Extang covers.  Gators get either a 2 or 3 year warranty.  If you have an issue, they are much easier to deal with.  If you have an issue with an OEM GM cover, you have to go through the service department and GM Warranty processes to get it taken care of.   Recommendations based on my experience:   Hard folding:   1.)  Undercover Ultra/Armor Flex (identical except Ultra has carpet on the underside and a smooth finish.  Armor has no carpet but has a Line-X coating on the outside.) 2.)  Leer HF650M.  Has 4 panels instead of 3.  Double seals to keep the water out.  Downside is only a 3 year warranty and warranty only honored if you purchase from a Leer dealer.  If you have your dealer install it or buy off Amazon they won't warranty it. 3.)  Bak MX4.  They sell a ton of them.  A good cover for the money when you can find one on sale.  About to be redesigned to include a spring to ease opening and closing. (Supposed to be released 7/26.  Bak MX4 EZ-Lift)   Hard rolling:   Bak Revolver X4S or X4TS (has t-slot rails.)  Personal favorite and the one I use on my truck.  Easy to roll up one handed.  Doesn't block the rear window.  Only costs you about 6" of the bed when open as opposed to a retractable canister which eats up about a foot of bedspace.  Downside is it's either all the way open or all the way closed.   Good luck with you search.    
    • cherryred21duramax
      Can anyone decode a VIN to determine if this truck has had emissions issues or a recall?

      By cherryred21duramax · Posted

      Does any of this change if the seller dropped the price to $22.5k?  Mechanic is supposed to verify the transmission concern but they have not got back to me yet.  Even if a transmission needed to be purchased, I'm looking at <$30k which puts me right back to where I started.   In the meantime, I test drove 2 trucks locally back-to-back, one Denali and one SLE, the SLE was noisy, jerky, and did not inspire confidence, while the Denali was over $30k but just sold the other day.  If $32k buys you a Denali with 100k miles and this truck can be had for $32k with a brand new transmission, with GM parts warranty, does that skew things?   FWIW, all the trucks I drove locally had a much worse service history - emissions work, valve body work, one even had the whole transmission replaced with lower mileage than the one in TX.  I'm guessing those were "short trip" vehicles, as they only racked up around 100k miles in 6 years - a lot less than 164k miles in just under 6 years.
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      Morality and Profit are two dogs fighting over the same bone. The bone looses.    Profit isn't always monetary. Position, power, leverage, prestige, celebrity, notoriety, fame; all forms of profit and those wanting whatever their currency is, don't care about who that pursuit hurts.       

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...