I have a 2012 Chev Express 4500 with a vortec engine. I need to replace the injectors. I bought a 6706 OTYC injector puller and it would seem to not be for that engine. Or else I need to remove the intake to use it. I am afraid to pry on the rails. I am afraid of the angle and break the injectors off in the head.
Make sure you use air to blow out any crap that has collected on top of the injectors. Give em a spray with a silicone lubricant. Work them all out gently with a screw driver or small pry bar. No sweat...