Note:This procedure is not used in Europe.
Special Tools
EN-43650 Balance Shaft Bushing Remover/Installer
For equivalent regional tools, refer toSpecial Tools.

Install the balance shaft bushing using the EN-43650 installer-(1).

Seat the balance shaft bushing into the bore using the EN-43650 installer-(1) and a wrench.When the EN-43650 installeris fully seated in the engine block, remove it with a wrench.

Note:If the balance shafts are not properly timed to the engine, the engine may vibrateor make noise.
Place the number one piston at top dead center (TDC).Lubricate the balance shaft lobes with engine oil.Install the balance shafts-(1) into their bores.Caution:Refer toFastener Caution.
Install the balance shaft retaining bolts and tighten to 10-Y -(89-lb-in).
Balance Shaft Removal Engine Block Cylinder Block Balance Shaft
Piston, Connecting Rod, and Bearing Installation (LAF, LAT, LE5, LE9, LEA, or LUK) Engine Block Cylinder Block Piston Assembly#PIT5236: Diagnostic Tip: OnStar Module Does Not Support All B101D Symptom Codes - (Oct 3, 2013)
Subject:Diagnostic Tip: OnStar Module Does Not Support All B101D Symptom CodesModels: 2011 - 2014 All GM Passenger Car and Light Duty Trucks with RPO UE1(Except 2011-2013 Chevrolet Corvette, 2011-2012 Chevrolet Colorado, 2011-2012 GMCCanyon)The following diagnosis might be helpful if the vehicle ex ...