It wouldn't hurt. Just don't leave it too long in there.

I kinda doubt it'd help though. Sometimes the lifters are just noisy. Mine in my 01 does it sometimes. It goes away after its been running for a little while.

I'd try some oil with a good additive package in it. Pennzoil platinum has a very hefty add pack in it. It dies a great job of cleaning the motor up.

That's all I run in any vehicle now. The first change was filthy and the subsequent changes got cleaner

 

Thank you for the reply. I'm always leery of adding anything to the oil.

Mine does seem to quiet down after running for a bit. From what I've read, it seems this is common, but it still bugs me!

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I'd try some oil with a good additive package in it. Pennzoil platinum has a very hefty add pack in it. It dies a great job of cleaning the motor up.

That's all I run in any vehicle now. The first change was filthy and the subsequent changes got cleaner

I have decided to go with the Pennzoil Platinum in my truck. Would I benefit any from using the High Mileage Platinum?

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It's broken exhaust manifold bolts more than likely. There is six bolts, check to see if they all have their heads yet. This is very common and misdiagnosed as "lifter tick" and goes away as the engine heats up because it closes the gaps between the head and exhaust manifold. I almost have mine back together. The expansion of the aluminium and heat cycle's are hard on them but aftermarket bolts are usually of higher quality. It's actually pretty astonishing how misdiagnosed this is. There have been people who have completely replaced the valve train and still had noise

 

It's broken exhaust manifold bolts more than likely. There is six bolts, check to see if they all have their heads yet. This is very common and misdiagnosed as "lifter tick" and goes away as the engine heats up because it closes the gaps between the head and exhaust manifold. I almost have mine back together. The expansion of the aluminium and heat cycle's are hard on them but aftermarket bolts are usually of higher quality. It's actually pretty astonishing how misdiagnosed this is. There have been people who have completely replaced the valve train and still had noise

Thanks, James!

Hadn't even thought of that. I'll take a look.

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Did you end up checking it ?

 

Did you end up checking it ?

All my bolt heads are present.

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Dang !!! Did mine and it's like a new motor ! purrr's like a kitten. The rear bolt was a pain in the ass though

 

I've got a 2008 with same engine. One day I started hearing what I thought was a lifter sound. I let it go for a few days until one day I decided to look into it, I would hear it when I opened drivers door coming from underneath the cab. A 'ticking' sound. I started checking the engine compartment and one of the first things I checked was the spark plugs. Sure enough, I noticed the number 7 plug wire 'wiggling'. The spark plug was loose. Tightened it up, no more ticking sound. so you may want to check all of them.

 

Mine has had this problem for a while but it comes and goes. It may not do it for 3 weeks and then do it every day. I wondered myself if it could possibly be some type of exhaust leak because it does quiet down when the truck gets warm. I just didn't know if an exhaust leak could be an every now and then thing. I had my plugs changed last service and am running 5-30 Mobil 1 with a quart of Lucas. (I thought this helped because the ticking quit for about 2000 miles but now it's back) any advice or help is appreciated. I tried to add a video so you could hear but it wouldn't let me. It is the loudest under the passenger fender.

 

Just check if the bolts are there. Mine had a leak and the ticking went away. It's hard to diagnose someones problem with out being there and hearing it. I just know the exhaust manifold thing was very common and gm never put up a tsb for it.

 

I appreciate the suggestions! I'm gonna start running synthetic next oil change and see if anything changes.

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How many miles does your truck have ? Maybe go a little heavier weight oil?

 

Sorry 78,000 miles lol.....hmm forget the heavier weight oil lol

 

Just check if the bolts are there. Mine had a leak and the ticking went away. It's hard to diagnose someones problem with out being there and hearing it. I just know the exhaust manifold thing was very common and gm never put up a tsb for it.

My 2006 Sierra 5.3 has the same issue. I noticed the exhaust manifold bolt at # 1 cyl. is missing the head. Just curious, did yours tick from initial start, or only when warm? Sorry,a little late to the party.

 

My 2006 Sierra 5.3 has the same issue. I noticed the exhaust manifold bolt at # 1 cyl. is missing the head. Just curious, did yours tick from initial start, or only when warm? Sorry,a little late to the party.

Mine ticks at initial start up. Most days it goes away after it warms up. Some days it doesn't tick at all.

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Just check if the bolts are there. Mine had a leak and the ticking went away. It's hard to diagnose someones problem with out being there and hearing it. I just know the exhaust manifold thing was very common and gm never put up a tsb for it.

My 2006 Sierra 5.3 has the same issue. I noticed the exhaust manifold bolt at # 1 cyl. is missing the head. Just curious, did yours tick from initial start, or only when warm? Sorry,a little late to the party.

Yes it did. When warmed up it would go away unless i was heavy on the throttle

 

unless you take a length of vacuum hose or a mech stethoscope or something (even a screw driver with your ear to the handle)

you're not going to get a very solid diagnosis until you can put a listening device and probe the entire valvetrain, fuel rail, etc. cylinder by cylinder "quadrant by quadrant" to suss out the sound.

I had what i thought was a noisy lifter and it turned out to be a loose #8 spark plug (the one on the passenger side farthest to the back very hard to get to, even harder to get a torque wrench on so i tightened it down and the 'noisy lifter' went away)