GMC Acadia Parts

GMC Acadia Parts Questions & Answers

• Camshaft
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  Q: How to replace the left side camshaft on GMC Acadia?

  A: To replace the left side Camshaft get both the en-48313 Timing Chain retention tool (EN-48313) and en 46111 Crankshaft rotation socket (EN 46111). The procedure to replace the side Camshaft starts with removing the lower Intake Manifold and then proceeding to the left bank Camshaft cover. The second step involves removing both the Camshaft sensors together with the Camshaft position actuator solenoid. The en 46111 will rotate the Crankshaft to achieve Camshaft neutrality while both Camshaft flats align perpendicular to the Camshaft cover rail. An open-end wrench should be placed at the Camshaft hex point to stop it from rotating then you can loosen the Camshaft position actuator bolt. Use the en-48313 by unscrewing its legs before sliding it between the Camshaft actuators while keeping the scribed line next to the cylinder head. Extend the legs of en-48313 partially until one leg reaches behind the Timing Chain guide before continuing the expansion to contact the chain without torque. Operate the en-48313 by hand until the camshafts meet each other to produce chain slack. Begin the process by marking the Timing Chain together with Camshaft position actuators for correct reassembly before uninstalling the Camshaft position actuator bolt and the camshafts. Installation requires correct alignment between Camshaft position actuator and Timing Chain marks before installing the Camshaft actuators to the camshafts with Camshaft bearing caps. Begin by removing en-48313 while using an open-end wrench for prevention of rotation and proceed to correctly install and tightly fasten the Camshaft position actuators. Afterward install the intake Camshaft position actuator solenoid together with Camshaft sensors and Crankshaft balancer and Camshaft cover and lower Intake Manifold.
• Knock Sensor
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  Q: How to replace the Knock Sensor for Bank 1 on GMC Acadia?

  A: Begin replacement of Bank 1 knock sensor by removing the exhaust manifold lower heat shield initially. First detach the engine wiring harness electrical connector from the bank 1 knock sensor. Before removing the knock sensor you must loosen the bolt that secures it. Position the new knock sensor then use a torque wrench to apply 23 Nm (17 lb ft) to the knock sensor bolt. The procedure requires connecting the engine wiring harness electrical connector to the bank 1 knock sensor and reinstalling the exhaust manifold lower heat shield after completion.
• Timing Chain
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  Q: How to replace the RH secondary camshaft timing chain on GMC Acadia?

  A: Starting the right Timing Chain replacement requires Spark Plug removal for Crankshaft rotation and engine front cover detachment. Strategically remove the right bank Timing Chain Tensioner followed by both the right bank Timing Chain shoe and guide before completing with the right bank Timing Chain itself. Start by fitting the right bank Timing Chain then install the guide before putting on the right bank Timing Chain shoe and tensioner. Return to service by replacing engine front cover and spark plugs.
• Shift Knob
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  Q: How to Change the Shift Knob on a GMC Acadia?

  A: The first step to changing the acadia's Shift Knob involves applying the parking brake followed by removal of the floor console left extension panel. Disconnect the transmission tap up/tap down switch electrical connector then rotate the key into run position without engine activation. A thin flat-bladed tool should be gently inserted between trim ring and Shift Knob layers to ease the trim ring off the Shift Knob because these pieces will separate by approximately 13.0 mm (0.5 in). Only after screwing out the Shift Knob screw can you safely guide the transmission tap up/tap down switch electrical harness and connector above the shift control indicator when removing the Shift Knob from the shift control lever. To assemble the Shift Knob users must apply p/n 88861426 lubricant to the shift control lever tip followed by proper electrical harness guidance when putting the Shift Knob in place onto the shift control lever. Secure the knob screw by tightening it to 4 n.m (35 lb in). The Shift Knob trim ring needs lifting until you hear a clicking sound to show proper mounting to the Shift Knob. After this set the shift control lever to park position and turn off the key. Check the transmission tap up/tap down switch electricity and verify shift control operation through all ranges before installing the floor console left extension panel along with brake release.