Warning:Refer toHot Exhaust System Warning. Preliminary ProcedureDisconnect the oxygen sensor electrical connectors.Remove the catalytic converter heat shield.Refer toCatalytic Converter Heat Shield ReplacementRemove the exhaust flexible pipe. Refer toExhaust Flexible Pipe Replacement. | |
1 | Catalytic Converter Nut (Qty:-4) Caution:Refer toFastener Caution. Caution:To prevent damage to the exhaust manifold flange or stud,make sure the flange is fully seated before tightening. ProcedureReplace nuts and gasket with new ones.Clean and inspect the studs on the engine cylinder head,replace as necessary.Verify that the studs are fully seated. Stud collar shouldtouch the surface of the engine cylinder head.Tighten nuts in a criss-cross pattern.TightenFirst Pass: 20-Y(15-lb-ft)Final Pass: 46-Y(34-lb-ft) |
2 | Gasket Tip:Improperly installed and/or leaking exhaust manifold gasketsmay affect vehicle emissions and/or On-Board Diagnostics (OBD) IIsystem performance. |
3 | Catalytic Converter Tip:If replacing catalytic converter,transfer both oxygensensors. |
#06-08-51-005C: Information on Hem Flange Sealer for Corrosion Protection - (Oct 30, 2013)
Subject:Information on Hem Flange Sealer for Corrosion ProtectionModels: 2014 and Prior GM Cars and TrucksAttention: Please direct this bulletin to the Body Shop or any areas of your dealership wheresheet metal replacement or corrosion repairs take place.This bulletin has been revised to add the 2 ...