Workshop Repair and Service Manuals GMC SIERRA
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Engine

Crankshaft and Bearing Installation Engine Block Cylinder Block Crankshaft      Special Tools J 45059 Angle Meter For equivalent regional tools, refer toSpecial Tools. Install the upper crankshaft bearings into the cylinder block. The bearing halvesto be inserted into the crankshaft main bearing...
Crankshaft Balancer Cleaning and Inspection Engine Block Cylinder Block Crankshaft      Clean the crankshaft balancer in solvent.Clean the belt grooves of all dirt or debris with a wirebrush.Dry the crankshaft balancer with compressed air.Inspect the crankshaft balancer for the followingconditions:Worn,...
Crankshaft Balancer Cleaning and Inspection Engine Block Cylinder Block Crankshaft      Clean the crankshaft balancer.Inspect the crankshaft balancer for damage to belt drivesurface and to crankshaft balancer hub.Inspect the balancer hub groove for damage or wear.Replace the crankshaft balancer if any concerns...
Crankshaft Balancer Cleaning and Inspection Engine Block Cylinder Block Crankshaft      Warning:Refer toSafety Glasses Warning. Clean the crankshaft balancer in cleaning solvent.Dry the crankshaft balancer with compressed air.Inspect the crankshaft balancer for the following:Loose or improperly installed...
Crankshaft Balancer Installation Engine Block Cylinder Block Crankshaft      Special ToolsJ 41478Crankshaft Front Oil Seal InstallerJ 41665Crankshaft Balancer and SprocketInstallerJ 42386-AFlywheel Holding ToolJ 45059Angle Meter For equivalent regional tools, refer toSpecial Tools Caution:Refer...
Crankshaft Balancer Installation Engine Block Cylinder Block Crankshaft      Special Tools J 44643 Flywheel Hold Tool For equivalent regional tools, refer toSpecial Tools. Install the J 44643 tool-(1, 2) to lock the flywheel. Lightly lubricate the crankshaft balancer internal hub with engine...
Crankshaft Balancer Installation Engine Block Cylinder Block Crankshaft      Special Tools J 23523-FBalancer Remover and Installer For equivalent regional tools, refer toSpecial Tools. Look to ensure that the crankshaft balancer front groove pinis installed in the proper location, if applicable....
Crankshaft Balancer Removal Engine Block Cylinder Block Crankshaft      Special Tools J 44643Flywheel Hold Tool For equivalent regional tools, refer toSpecial Tools. InstallJ 44643tool-(1, 2) to lock the flywheel. Remove and discard the crankshaft balancerbolt-(1).Remove the crankshaft...
Crankshaft Balancer Removal Engine Block Cylinder Block Crankshaft      Special Tools J 23523-FBalancer Remover and Installer For equivalent regional tools, refer toSpecial Tools. Remove the crankshaft balancer bolt and washer. Remove the bolts and the crankshaft pulley. 23523...
Crankshaft Balancer Removal Engine Block Cylinder Block Crankshaft      Special ToolsJ 41816-ACrankshaft Balancer RemoverJ 41816-2Crankshaft End ProtectorJ 42386-AFlywheel Holding Tool For equivalent regional tools, refer toSpecial Tools. Caution:Refer toFastener Caution. Note:Do not use the...
Crankshaft Balancer Replacement Engine Block Cylinder Block Crankshaft      Special Tools J 23523-FCrankshaft Balancer Remover and Installer Removal Procedure Remove the drive belt. Refer toDrive Belt Replacement.Remove the cooling fan. Refer toFan Replacement. Caution:To prevent damage to the end...
Crankshaft Balancer Replacement Engine Block Cylinder Block Crankshaft - part 2      Install the USED crankshaft balancer bolt-(139) . Tighten the USED bolt to 330-Y (240-lb-ft).Remove the USED crankshaft balancer bolt. Note:The nose of the crankshaft should be recessed 2.4–4.48-mm (0.094–0.176-in) into...
Crankshaft Balancer Replacement Engine Block Cylinder Block Crankshaft      Special ToolsJ 41478 Crankshaft Front Oil Seal InstallerJ 41665 Crankshaft Balancer and Sprocket InstallerJ 41816 Crankshaft Balancer RemoverJ 41816-2 Crankshaft End ProtectorJ 41816-A Crankshaft Balancer RemoverJ 42386-A...
Crankshaft Balancer Replacement Engine Block Cylinder Block Crankshaft      Special Tools J-44643 Flywheel Holding Tool For equivalent regional tools, refer toSpecial Tools. Removal Procedure Disconnect the negative battery cable. Refer toBattery Negative Cable Disconnection and...
Crankshaft Balancer Replacement Engine Block Cylinder Block Crankshaft - part 2      Install the USED crankshaft balancer bolt-(139). Tighten Tighten the USED bolt to 330-Y (240-lb-ft).Remove the USED crankshaft balancer bolt. Note:The nose of the crankshaft should be recessed 2.4–4.48-mm (0.094–0.176-in)...
Crankshaft Balancer Replacement Engine Block Cylinder Block Crankshaft      Special ToolsJ 41478 Crankshaft Front Oil Seal InstallerJ 41665 Crankshaft Balancer and Sprocket InstallerJ 41816-2 Crankshaft End ProtectorJ 41816-A Crankshaft Balancer RemoverJ 42386-A Flywheel Holding ToolJ 45059 Angle...
Crankshaft Front Oil Seal Installation Engine Block Seals and Gaskets      Tools Required J 44645Crankshaft Front Oil Seal Installer Lubricate the crankshaft sealing surface with engine oil.Place the crankshaft front oil seal onto the crankshaft.Install theJ 44645crankshaft front oil seal...
Crankshaft Front Oil Seal Installation Engine Block Seals and Gaskets      Special Tools J-41478-A Crankshaft Front Oil Seal Installer Note: Do not lubricate the oil seal sealing surface.Do not use the crankshaft front oil seal again.Lubricate the outer edge of the oil seal-(140) with clean...
Crankshaft Front Oil Seal Installation Engine Block Seals and Gaskets      Special Tools J-41478Crankshaft Front Oil Seal Installer For equivalent regional tools, refer toSpecial Tools. Important: Do not lubricate the oil seal sealing surface.Do not use the crankshaft front oil seal...
Crankshaft Front Oil Seal Removal Engine Block Seals and Gaskets      Tools Required J 44644Crankshaft Front Oil Seal Remover Install the button ofJ 44644Crankshaft Front Oil Seal Removerinto the crankshaft.Press the jaws ofJ 44644Crankshaft Front Oil Seal Removerinto the felt portion of...
Crankshaft Front Oil Seal Replacement Engine Block Seals and Gaskets      Special ToolsJ-44644 Crankshaft Front Oil Seal RemoverJ-44645 Crankshaft Front Oil Seal InstallerRemoval Procedure Remove the crankshaft balancer. Refer toCrankshaft Balancer Replacement.Install the button of J-44644 oil...
Crankshaft Front Oil Seal Replacement Engine Block Seals and Gaskets      Special Tools J 35468Cover Aligner and Seal Installer Removal Procedure Remove the crankshaft balancer. Refer toCrankshaft Balancer Replacement.Inspect the engine front cover seal bore area for damage.Use a suitable seal...
Crankshaft Front Oil Seal Replacement (LY6 L76 and L9H) Engine Block Seals and Gaskets      Special Tools J-41478 Crankshaft Front Oil Seal Installer Removal Procedure Remove the crankshaft balancer. Refer toCrankshaft Balancer Replacement.Remove the crankshaft front oil seal (140) from the front...
Crankshaft Rear Oil Seal Housing Cleaning and Inspection Engine Block Seals and Gaskets      Note: Do not use the crankshaft rear oil seal again. Install a NEWcrankshaft oil seal during assembly.Do not use the rear housing-to-engineblock gasket again. Install a NEW gasket during assembly.Remove the crankshaft oil...