Question 1

How to replace the engine front timing cover on GMC Yukon?

Accepted Answer

If you are to change the engine front cover, remove the Water Pump and crankshaft balancer first. Unplug the cmp sensor wire harness from cmp actuator magnet and the engine harness from cmp sensorarness. The next step is to remove Oil Pan to front cover bolts and front cover bolts (501), after which the front cover (502) should be removed along with its gasket (503) which should be discarded. Strip the crankshaft front oil seal off it and in case of changing the engine front cover take off the cmp sensor wire harness and bolts and disconnecting it from the cmp sensor off and besides taking off the cmp sensor wire harness and the cmp sensor (703) and cmp actuator magnet bolts (751) and magnet (752) but discarding cmp actuator magnet gasket (753). For installation, do not use the reused crankshaft oil seal or the front cover gasket and do not apply the sealant to the front cover gasket in the absence of instructions. Use the en-48853 front cover alignment tool which will adjust the crankshaft front oil seal properly. Install a new cmp actuator magnet gasket (753), put the cmp actuator magnet (752) and bolts (751) on and tighten them to 12 nm (106 lb in) check the cmp sensor o-ring seal (704) for damage, lubricate its o-ring with clean engine oil and install the cmp sensor (703). Mount the cmp sensor wire harness to the front cover, attach it to the compressor pressure sensor, tighten the cmp sensor wire harness bolts to 12 nm (106 lb in), and apply gasket between the wire harness and the front cover. Put a 5 mm, 20 mm 0.20in,0.80in length bead of sealant on the Oil Pan, the Oil Pan to engine block junction ,and then to position the new engine front cover gasket (503) and front cover (502) on the engine. Putting in front cover bolts (501) until snug in sequence avoiding overtightening, oil pan to front cover bolts in finger-tight sequence. Install the crank shaft balancer bolt partially tight then tighten the Oil Pan to front cover at 25 nm (18 lb ft) then tighten the engine front cover bolts at 25 nm (18 lb ft). Unplug the tools, place the cmp sensor, and connect the engine harness electrical connector to the cmp sensor wire harness electrical connector and the Camshaft Position Sensor wire harness electrical connector to the cmp actuator magnet. Finally, seal a new crankshaft front oil seal and also the Water Pump.

Question 2

How to replace the engine front timing cover on GMC Acadia?

Accepted Answer

To replace engine front cover, remove frame from body along with engine and transmission, as on engine replacement remove. Then, remove the Intake Manifold, camshaft covers and water outlet housing assembly, the drive belt tensioner, the Water Pump Pulley, power steering pump, the crankshaft balancer, and the camshaft position sensors. Also, take off the actuator solenoid valves for the camshaft position from the front cover and generator. It should be noted that 22 m8 bolts and 3 optional m12 bolts need to be removed before the front cover can be disassembled from the engine block. After displacing the appliance of the engine front cover install the fresh front covers then the originator, camshaft position actuator solenoid valves, camshaft position sensors, crankshaft balancer, power steering pump, water pump pulley, water outlet housing assembly, drive belt tensioner, camshaft covers, intake manifold, and finally reinstate the frame with the engine and the transmission, keeping a complacency for engine loading steps. Use the following special tools: en 46109 (Guide Pin Set), en-48383 (Camshaft Retaining Tools), and en-48589 (Crankshaft Rotational Socket).

Question 3

How to replace the engine front timing cover on GMC Sierra 1500?

Accepted Answer

You should start your repair of the engine front cover (all versions except RPOs LC9, LH6, LMG, LY2, LY5) by removing the Water Pump after which you should take out the crankshaft balancer. The engine harness electrical connector needs removal from the camshaft position (CMP) sensor wire harness before you take out the Oil Pan-to-front cover bolts then the front cover bolts. First remove the front cover along with its gasket while discarding the gasket, then take off the crankshaft front oil seal. To replace the engine front cover you must remove bolts holding the cmp sensor wire harness after disconnecting the wire harness from the cmp sensor before extracting the cmp sensor and actuator magnet with their gaskets and bolts. Replace the crankshaft oil seal and avoid using new front cover gasket during installation unless otherwise directed. Also do not apply sealant in any case. Properly position the front crankshaft oil seal to stop premature wear and leakage. After applying the cmp actuator magnet gasket to the magnet you should install the magnet along with its bolts while torqueing them to 12 nm (106 lb in). Before sensor installation inspect and apply lubrication to the cmp sensor o-ring seal while securing both cmp sensor and its wire harness with torque bolts set to 12 nm (106 lb in). Before installation put a 5 mm (0.20 in) sealant bead at the Oil Pan to engine block junction point. Position the new engine front cover gasket and front cover and tighten bolts on the front cover and Oil Pan-to-front cover connection but avoid over-torquing. After front cover alignment with tool j 41476 apply crankshaft balance bolt hexagonal nut. Reconnect the engine harness electrical connector before installing a new crankshaft front oil seal but perform the following tasks first: snug the crankshaft balancer bolt with the j 41476 tool then tighten the Oil Pan to front cover bolts and engine front cover bolts to 25 nm (18 lb ft).

OEM GMC Timing Cover

72 Timing Covers found

GMC Timing Cover, Front

GMC Timing Cover

GMC Timing Cover, Front

GMC Timing Cover

GMC Front Cover

GMC Front Cover, Upper

GMC Timing Cover, Front

GMC Rear Cover, Lower

GMC Timing Cover

GMC Timing Cover, Front

GMC Rear Cover

GMC Front Cover

GMC Front Cover

GMC Timing Cover, Front

GMC Front Cover

GMC Timing Cover, Front

GMC Timing Cover, Front

GMC Timing Cover, Front

GMC Water Pump, Front

GMC Rear Cover

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