torque settings for the 2006 trailblazer intake manifold gaskets.

cbduffeck

Original poster
Member
Jan 6, 2013
12
In the endless repair of the Po171 code. I am now replacing the intake manifold gaskets. Anybody know the torque settings for the bolts? and should lock tight be used?
 

jimmyjam

Member
Nov 18, 2011
1,634
I only have an alldata sub for the V8... you should fill out your profile info so we know what engine you are asking about

Intake Manifold Bolts - First Pass in Sequence 5 Nm (44 inch lbs.)

Intake Manifold Bolts - Final Pass in Sequence 10 Nm (89 inch lbs.)
 

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cbduffeck

Original poster
Member
Jan 6, 2013
12
Thanks. But since the intake manifold is plastic. I just used a 1/4 drive with the 10mm socket and went 1/2 turn past snug. I am hoping that this will work. I had 5,6 cylinder bolts really loose. it was causing a P0171 error. It would also stahl out went the temp. was below 20 degrees. Started it last night and this morning and seems to be pretty good. No error codes and not stahling out. I found it really hard to belief that the manifold bolts were so loose. This must be a defect from the factory. I spoke to a Service manager at a chevy dealer and he immediately said a commen problem is loose bolts on cylinders 5 and 6.
I'm also thinking that a guy should put some locktight on these bolts.

We will see how long it lasts, It lasted 147,000 miles so far.
 

Wooluf1952

Member
Nov 20, 2011
2,663
Milwaukee, Wisconsin
The service manual for the 2003 I6 calls for 89 in. lbs.
Start in the middle and work out. No tread lock is listed.
 

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