OEM 2004 GMC Envoy Timing Cover

2004 GMC Envoy Parts Questions & Experts Answers

• Q: How to replace the engine front timing cover on 2004 GMC Envoy?

  A: The replacement process for engine front covers demands specific tools which include cover alignment pins (J 44219). Cover alignment pins (J 44219). The process starts with Water Pump removal while also taking off crankshaft balancer components alongside drive belt tensioner and Power Steering Pump and Oil Pump pipe and screen assembly. Once these items are off you should lower the vehicle. Begin this procedure by replacing first the 7 mm center bolt then the rest of the engine front cover bolts. Use two bolts as jack screws which should be installed into threaded holes and tightened equally until the engine front cover detaches from the engine block. After detachment remove the cover along with the jack screw bolts. Apply sealer gm p/n 12378521 (Canadian P/N 88901 148) into a 3 mm (0.12 inch) bead on the engine front cover before continuing with installation. You must reinstall the Oil Pump if it was removed during installation. The engine block alignment process benefits from passing the cover alignment pins (Part # J 44219) through its channels. Application of sealer should end 10 minutes before engineers install the engine front cover. Place a 3 mm (0.12 inch) bead of sealer gm p/n 12378521 (Canadian P/N 88901 148) on the front cover before fitting the Oil Pump to crankshaft sprocket splines while putting the engine cover over the j 44219 block fixtures. After installing the engine front cover bolts place j 44219 on the engine block and remove it. Secure the two larger engine front cover bolts to 10 nm (89 inch lbs.) while the small central bolt requires 8 nm (71 inch lbs.). Complete the installation sequence by putting back the Water Pump followed by drive belt tensioner then crankshaft balancer then Power Steering Pump and lastly Oil Pump pipe and screen assembly.