Question 1

How to replace the right side camshaft on GMC Acadia?

Accepted Answer

The right side Camshaft replacement process starts with manifold removal of the lower intake alongside Camshaft cover sensors and position actuator solenoid and Crankshaft balancer. Use the Crankshaft rotation socket (EN 46111) to rotate the Crankshaft which allows positioning the camshafts at a low tension neutral stage while the Camshaft flats maintain parallel alignment with the Camshaft cover rail. The engine needs stable structure by using an open-end wrench to halt the hex Camshaft movement despite keeping the Camshaft position actuator bolt in position. Use the Timing Chain retention tool (EN 46108) by completely inserting it to the Timing Chain then tighten its nuts firmly until marks appear on both the Camshaft Timing Chain and Camshaft position actuators while maintaining proper alignment for assembly. Mark the Timing Chain and corresponding positions on each Camshaft position actuator before removing both the Camshaft position actuator bolt and Camshaft bearing caps and Camshaft from the engine block. To install correctly position the alignment marks on both the Camshaft position actuators alongside the Timing Chain before you skip tightening the Camshaft position actuator bolt. Begin with Camshaft alignment at the Cylinder Head. Then proceed to install the Camshaft actuators before incorporating the camshafts and Camshaft bearing caps. Install the Crankshaft balancer before using the open-end wrench at the Camshaft hex to stop rotation of components. The maintenance work ends with the installation of Camshaft position actuators accompanied by the intake Camshaft position actuator solenoid and Camshaft sensors before Camshaft cover and lower Intake Manifold attachment.

Question 2

How to replace the camshaft on GMC Canyon?

Accepted Answer

You can begin Camshaft replacement by taking out the Camshaft cover together with the Camshaft position (CMP) sensor. Reverse Crankshaft rotation until the #1 Piston reaches its top dead center (TDC) position on the compression stroke. The delphi word on the exhaust Camshaft position actuator needs to become parallel to the cam cover mating surface of the Cylinder Head. You should install the Camshaft holding tool (J 44221) behind the camshafts before discarding both intake and exhaust Camshaft sprocket bolts. The installation of the Camshaft sprocket holding tool (J 44222) to the Cylinder Head front requires complete tightening of its two bolts while proper adjustment of the horizontal bolt into the exhaust Camshaft phaser actuator sprocket before sprocket removal from camshafts. Adjust the horizontal bolts into the Camshaft sprockets that are attached to the j 44222 tool which functions as a Cylinder Head sprocket holder to sustain chain tension. Transfer the sprocket with Timing Chain from each Camshaft to the Camshaft sprocket holding tool (J 44222). The mechanic should loosen the Camshaft cap bolts slightly to clear valve spring pressure before removing both caps and the Camshaft holding tool (J 44221) along with the camshafts from the Cylinder Head. Clean engine oil should be applied to the Camshaft journals thrust face and lobes before mounting the Camshaft holding tool (J 44221) with Camshaft flat positioned up against the #1 tdc position. After oiling the intake and exhaust camshafts plus their caps reconstruct them within the original positions by using the marks on the caps as alignment guidance. Put the Camshaft caps in place following their identification marks while tightening all Camshaft cap bolts equally to 12 n.m (106 lb in). A 25 mm (1 in) wrench applied to the hex of the camshafts allows you to steadily rotate them for alignment pin insertion. Remove the Camshaft sprocket holding tool (J 44222) after sliding the sprockets with Timing Chain to the camshafts. Use the angle meter (J 45059) to tighten the intake Camshaft sprocket bolt to 20 n.m (15 lb ft) and an extra measurement of 100 degrees while tightening the exhaust Camshaft actuator bolt to 25 n.m (18 lb ft) with an additional 135 degrees. Reinstall the Camshaft cover after installing the cmp sensor while taking out the Camshaft holding tool (J 44221).

Question 3

How to replace the camshaft on GMC Sierra 1500?

Accepted Answer

The hood hinge bolt removal starts by raising the hood to its service position then breaking the hood hinge bolts before pulling the hood vertical to tighten the hinge bolts in their service position . Start by taking out the radiator support and front cover as well as the valve lifters and Camshaft sensor bolt and sensor. The Crankshaft requires rotation until the timing marks between Crankshaft and Camshaft sprockets become aligned before removing the Camshaft sprocket bolts. The Crankshaft assembly must not spin after removing the Timing Chain since this leads to piston assembly and valve damage. Users must first extract the Camshaft sprocket and move the Timing Chain into position before detaching both Camshaft retainer bolts and retainer. To safely remove and install the Camshaft protect the Camshaft bearings while placing three m8-1.25 x 100 mm (M8-1.25 x 4.0 inch) bolts into the front bolt holes as a Camshaft extraction tool. You should clean and perform an inspection of both the Camshaft and bearings when needed. The three installation bolts can be reused to guide the engine block installation of the Camshaft before the bolts get removed. Lay the retainer plate with its sealing gasket touching the engine block and keep the gasket surface clean before installing the Camshaft retainer and bolts that need to be tightened to 25 nm (18 ft. Lbs.). Begin by attaching the Camshaft sprocket to the engine then position the Timing Chain followed by Camshaft sprocket bolt tightening to 35 nm (26 ft. Lbs.). You must inspect the Camshaft sensor o-ring seal for signs of damage before proceeding. The Camshaft sensor o-ring seal can be used if intact; apply clean engine oil to it before sensor installation and bolt tightening at 25 nm (18 ft. Lbs.). After installing valve lifters continue installation with front cover and radiator support pieces. Put the hood in its normal position and screw in the hood hinge bolts to a torque of 25 nm (18 ft. Lbs.).

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