GM 93445880
Timing Cover

To remove the engine cover, disassemble the pump (water), crankshaft balancer, and Oil Pan, and slide the bolts and shield out of the way. The crankshaf position (CKP) sensor has to be disconnected first through its electrical connector, then remove the ckp sensor bolt and sensor then dispose of the ckp sensor o-ring seal. Secondly, take off the front cover bolts, then discard the composite front cover, while making sure to clean all surfaces used for seals. Install a new front cover and then install the front cover bolt tighten to 12 nm (106 inch lbs.) do not return to the original ckp sensor o-ring seal,; rather, lubricate a new ckp sensor o-ring seal with clean engine oil and attach it on the ckp sensor. During the installation of the ckp sensor, make sure that it is inserted completely prior to threading the bolt to a torque of 8 nm (71 inch lbs). Reconnect the ckp sensor electrical connector, and reinstall the engine shield and bolts with 20 nm (15 ft. Lbs.) of torque. Lastly, re-install the Oil Pan, crankshaft balancer, and Water Pump.

The engine front cover replacement process starts by taking out the engine Oil Pan followed by removing the crankshaft balancer and Water Pump and crankshaft position (CKP) sensor. Do not reuse the engine front cover because doing so may cause oil leaks so throw away the old unit while cleaning all surfaces that seal. Install both the new engine front cover and the engine Oil Pan as the next step. Avoid using the original sealing device (O-ring) during ckp sensor installation to stop irregular engine behavior. You should install the ckp sensor as your last step together with the Water Pump and crankshaft balancer.

To remove the engine cover, disassemble the pump (water), crankshaft balancer, and Oil Pan, and slide the bolts and shield out of the way. The crankshaf position (CKP) sensor has to be disconnected first through its electrical connector, then remove the ckp sensor bolt and sensor then dispose of the ckp sensor o-ring seal. Secondly, take off the front cover bolts, then discard the composite front cover, while making sure to clean all surfaces used for seals. Install a new front cover and then install the front cover bolt tighten to 12 nm (106 inch lbs.) do not return to the original ckp sensor o-ring seal,; rather, lubricate a new ckp sensor o-ring seal with clean engine oil and attach it on the ckp sensor. During the installation of the ckp sensor, make sure that it is inserted completely prior to threading the bolt to a torque of 8 nm (71 inch lbs). Reconnect the ckp sensor electrical connector, and reinstall the engine shield and bolts with 20 nm (15 ft. Lbs.) of torque. Lastly, re-install the Oil Pan, crankshaft balancer, and Water Pump.

First, remove the Water Pump, the crankshaft balancer, remove Oil Pan to front cover bolts and front cover bolts in order to remove the engine front cover. Next, you should remove the front cover, and gasket, throwing the old gasket away. In case it is necessary, clean and check the engine front cover. It is essential not to do reuse crankshaft and oil seal found cover gasket and to not use any sealant on the found cover gasket except if specified. Make sure that all gasket surfaces are clean of oil or foreign material when assembling and align the crankshaft front oil seal relative to the crankshaft to avoid premature wear and oil leaks. Pre-apply a 5 mm (0.20 inch) bead of sealant gm p/n 12378190, or equivalent, 20 mm (0.80 inch) long on the Oil Pan to engine block junction, then apply the front cover gasket and cover. Tighten the front cover bolts and Oil Pan- to front cover bolts until snug and make sure there is no overtightening. Using the j41476 front and rear cover alignment tool j41476 , align the front cover correctly in such a way that the tapered legs that face the machined surfaces. Tighten the Oil Pan to front cover and bolts to 25 nm (18 ft. Lbs.) and the engine front cover bolts to 25 nm (18 ft. Lbs.). Take out the j41476, then install a new crankshaft front oil seal and last but not least install a new Water Pump.

Install the engine front cover bolts, tightening them to 12 Nm (106 inch lbs.).

Follow the Fastener Notice in Service Precautions and tighten the engine front cover bolts to 12 Nm (106 inch lbs.).

First, remove the water pump, crankshaft balancer, and oil pan.

Do not reuse the crankshaft oil seal or front cover gasket and avoid applying sealant to the gasket unless specified.

Gather the necessary tools, specifically the Front and Rear Cover Alignment (J 41476).

First, remove the water pump, crankshaft balancer, and oil pan.