KIFER88

iTrader: (2)

ive got my 02 tahoe tore down so i can replace my knock sensors. i am wondering if ther is a torque sequence when tighting the bolts ex( start in the middle and work my way to each end alternating sides) or what ? next is what coolant would you guys run? is ther such a thing as a relearn for the knock sensors? any thoughts would be great thanks..

BlackGMC

iTrader: (31)

That is what i do when i tq down my intake

I run dex cool coolant.

No relearn on kr sensors. You adaptive spark make take a little time to come back thou.

Preston129

iTrader: (3)

This is how I've done them before, remember the torque setting is in in-lbs:



For coolant I just use dexcool.

BlackGMC

iTrader: (31)

Also when i tq anything down i always make 3 passes.

First pass at 1/2 the final tq amount
Second pass at full tq amount
Wait about 5-10min
Third pass recheck at final tq amount

KIFER88

iTrader: (2)

thanks guys. my parts should be comming this afternoon hope to have her back up and running tomorro nite with any luck.. just a thought a person may want to add the pic of the bolt sequence to the 6.0torque spec thread..
thanks again guys

TXSZ66AVLANCHE

iTrader: (7)

I'm not knockin' ya but this like a 1 hour job, also the intake is dry so why did you drain the coolant?

GMCtrk

iTrader: (27)

The correct way (per GM) is 2 passes, with a sequence similar or equivalent to the drawing above. I can't remember the torque specs or sequence off hand, but if you work on your vehicle a lot it's worth it to subscribe to ALLDATA, it has all this info. Also, you will need an inch-pound torque wrench to properly torque everything,

Suburbazine

Intake Manifold Bolt
First Pass in Sequence 5 Nm (44 inch lbs.)
Final Pass in Sequence 10 Nm (89 inch lbs.)
Intake Manifold Sight Shield Bolt (RPO LQ9 - 6.0L Engine) 9 Nm (80 inch lbs.)
Intake Manifold Sight Shield Bolt (4.8L, 5.3L, and RPO LQ4) 10 Nm (89 inch lbs.)
Intake Manifold Sight Shield Retainer Bolt 5 Nm (44 inch lbs.)

I personally tighten to 120in/lbs because I've encountered seal issues on machined heads.

KIFER88

iTrader: (2)

yah it didnt take a long as i thought it would to get it tore down esp after i got the damn lock clips off the injector plug ins.. just habit for draining the coolant ive changed them on my older 90s pkups. some reason i had it in my head they were threaded into a water passage... guess a person learns sumthing every day
torque wrench isnt a prob for me most of the newer tractors i work on require inch lb torque setting for something on them..

KIFER88

iTrader: (2)

you talkn like after they have been milled .020 or .030 in?