I changed the oil, oil filter and plugs and wires about three weeks ago. Always had lifters make noise sometimes but this is a different sound. Its a deeper harder click. Checked fly wheel bolts and pulleys. Sounds like it's coming from area of the engine oil pan.
Take it to a qualified repair shop.
SOURCE: Lifter clicking sound in 4.6 engine
it could be your tensioner. it sounds like a clicky squeak. sometimes it may go away but it always comes back. thats what mine is but i havent fixed it yet. i doubt you can grease it, you probably need it replaced. not expensive, at least the part should be under 100 bucks
SOURCE: Engine light is on.
Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the Check Engine or Service Engine Soon lights to tell you that there is a problem and you should have the car diagnosed and repaired. Not fluid related, but could be a small problem that's easy to fix now. Even a loose gas cap can turn the light on. Have a code scan, that's the starting point.
SOURCE: oil pan removal on 2002 gmc sierra
did you pull the rubber plugs between the motor and trans out? there are either nuts or bolts up there
SOURCE: 96 gmc sierra hard to crank after 12-14 hours
that has a votec engine in it the fuel pressure is droping at knight and it takes 60 psi before the injectors will fire most likely cause fuel pump ,leaking injector ,or a feul pressure regulator
SOURCE: engine noise on area of pulleys and sometimes engine tries to sto
could be one of the pulleys, air conditioning, power steering, idlers. start by checking them.
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