I have a 2004 Cadillac SRX 4.6L engine, could anyone tell me how to replace the oil actuator on the passenger side firing order #1, #3, #5 #7 bank 2 the exhaust oil actuator? Do you need any kind of special tools or do any specific things? It looks to me like you would take the cover off and change the oil actuator by removing the 10mm bolt and sliding it out and replace with a new one and replace the 10mm bolt and put the cover back on. This is my first engine to work on with variable cam timing and I don't want to make any mistakes. Thanks for your help.