AGAIN !!! Another "Tapping" 5.3 !! It's not lifters or exhaust.. 2nd time I've seen this.. 

I owe you a huge gratitude of thanks for this video. I had a service stability system and check engine light come on at about the same time, and then my engine started tapping just like the one in your video. I was told that I had to have the engine replaced, and it would cost about $7k by a mechanic. After seeing this video, I made sure that all my coil wires were tight. Both errors went off, and the engine knock stopped. Thank you very much. Save me $7k for engine replacement and about $3k for rental car while truck would be getting fixed.

Sometimes a good mechanic has to be a better detective to find the true problem cause. Relevence can lead you to the root cause if you ask yourself relevant questions. You did just that with this truck. Excellent job!

Thank you Sir! You just saved my bro's bacon. He has a 2015 GMC Sierra and it has the same tick and he checked the spark plugs and found 1 loose one that once placed back on properly stopped the tick! Great stuff!

Great detective work and trobleshooting walk thru. Your a great mechanic to follow. Thanks for sharing your tips and years of experience with us.

My 04 Z71 has 413k on it. Original engine, trans and rear. Yes I've done the rear main seal, axle seals and stayed on top of the maintenance since I got it at 178k. Gas mileage ain't what it used to be but I'm proud of that truck.

Your like an auto detective, most people wouldn't have thought of that

We always called it spark jumping. Good job recognizing it

Subbed instantly. You sir know your shit. I'm very impressed with all of your observations under that hood. Truly watching a professional.

Like your teachability . Very informative. Thank you.

I just bought a 1500 GMC thinking the lifters were bad, after seeing this video, sure enough all spark plugs were loose. The seller did say he just installed new spark plugs and cables. He didn’t tighten them correctly. Thanks for this video

Thanks Kenny. This video is exactly what was wrong with my 15 5.3l ltz I had no engine light, no off oil pressure or over heating. I second I heard this noise sounded exactly like mine an it was an now all is good!

You are one great mechanic. 👍

The tire wear is indicative of cranking up torsion bars or installing a leveling kit. Any time the suspension is touched it needs an alignment.

I love how detailed your investigation was. Freaking art. I wish I knew how cars worked.

Thank you .A lot of help.Thats why my truck was missing .Would not start good on hot weather.

I did,thank you...I have a 2002 ,mine tick first start up with 160k mile ,after warm up it disappear, it gets close to 18 mpg on high cruze set...no complaints

What a great video! Very informative Process of elimination as my dad always showed me to work on my cars!!!

Check for broken manifold bolts as well. Had 2 rear broken ones on my 2014. Kenny has other vids on that diagnosis. Thanks Ken!!

2015 Chevy Silverado with the same "Tapping Noise" with a the feeling of a misfire with no codes. I changed my spark plugs and wires about a year ago. This issue started about 3 months ago and thought the worse. Just found this video and went out and checked the wires and found the same issue. Thank you for posting this. My conclusion is that the metal prong inside the wires boot is lose.

I’ve been problem free engine wise (knock on sheet metal) on a 2011 Silverado with an AFM 5.3 and I’ve been running corn squeezins (E85) for the majority of the last 2.5-3 years (huge cost difference in CA). I’m about 3 oil changes from 500K on it (miles). In my experience I believe that a large percentage of AFM issues are related to oil quality, change interval and treating changing the oil like surgery. I always change it hot, and I wipe down everything remotely close to an opening and make sure things like funnels etc are clean and use new or laundered rags. FWIW too, this guy is great, with his honest attitude and savvy he’s going to have to disappear to retire 🤣

Excellent video, great content , your sharing of experience is worth thousands of dollars!

Great video, Kenny.

got a ticking 5.3 out in my driveway! Thank you for the tip, I saw your first video about it but was busy and didn’t end up watching it back then. Will be going out to do the quick fix now!

The coil wire happened to mine. Slight rough idle and hard to hear tick with the purge valve up front. Remembered the earlier video and got it. Also the tip with coil pack saved me too!

This is exactly my noise! The dealer said it takes 3 weeks to look at it! I'm about to go over there and check my coil! You sir earn a new sub!!

The real question is? How many shops have installed lifters because of this? 😂 Sounds nothing like it but you never know nowadays….. Great video and great observation!

Great video! Thanks!

Great fix! Wish he was my neighbor 😅

great video! thanks for the info

THANK YOU THANK YOU THANK YOU.🙏🏿 Saved my butt today 2014 GMC Sierra 5.3 4 inch lift ….

Great vid. Still suprises me that people dont even open hood to check. Vibrating lead. Tires defo looks like front end bump. Bent something.

Real master of deduction 💯I got a 2017 that gives me that Shutter, misfire, loss of communication(I replaced master control switch haven't fixed it) Harsh tire wear after a front end colission.

That ticking/snapping is unique ..I knew what it was as soon as I heard it ....

I just subscribed because Kenny knows his stuff!!!!!!

I got a kick out of the smile on your face when you opened the hood. (Yep! ! ! ! ! ! I know what that is, , , , , )

I recently fixed a ticker 2007 silverado. It was a loose sparkplug i can literally see it moving up and down as the cylinder fired against it . . crazy! Tightened spark plug and fixed the problem

AWSOME JOB!!

Good old American know how and roll up your sleeves blue collar work. You're a dying breed Kenny.. appreciate your channel and just subbed.

I have had the bolt retainer clip on the steering shaft pull the plug wire off if it isn't turned to one side a bit, it happened the last time it got a tune-up, it was the wire behind the one you found loose.

really cool, love to see mechanics ask why, rather than just fix n go.

Ive had my 2008 Chevrolet 4X4 for 7 years and it rurn me into mechanic . 4.56 gears , beefed up transmission with Teflon pads 3 to 4 pin , heavy vales job. Rebuild 5.3 with big cam, springs lifters . 430 hp and just put new coils , airmass flow, plugs , wires , o2 , map,evap , radiator, fans , larger transmission cooler , new A/C , heater coil , head lights, belts , pully , door controls , fuel pump.

Just got an 05 avalanche from a friend with that ticking.. will have to check that wire.. thanx for the vid brother

Just had the same plug wire come off on our of our customers truck today. Found it quick as I've heard that arc sound many times in the past with mouse eaten plug wires and such.

Very interesting diagnosis.

Dude, I learned something, thank you! BTW, what brand and model of frames are those glasses?

my 02 Tahoe LT had the lifter tick. good to see GM has taken care of it 😄

Great video!

Great job 👍

Great video

Awesome video!

5.3s notorious for broken GM exhaust manifold bolts. I had one a few years ago and replaced them all with stainless . I believe there are kits out there

Very well done

Your like the Sherlock of diagnosis, that can save you and your clients a lot of time and money. Great job.

Very interesting! Thanks

Judging from the way that sheet metal was pushed back, I would say that the front bumper was replaced at some point in time. And, it looks like, a front end collision may have thrown the tires out of alignment. I would send him to a frame shop, to at least have it set up and measured. If either frame rail has been mashed or swayed or has an out of level condition. It will affect the sai, steering access inclination. (Steering wheel returns to center.) Which is all three, tow, camber, castor, set properly. Any one of those three, can cause excessive tire wear. I've also seen in the past, where the alignment shops have cranked up the torsion bars. To create the illusion that the frame is straight. And don't think just because you have a big Chevy truck, that you have a heavy duty frame on there. That is not the case at all. The frame on those trucks is just enough to get it down the road. There's nothing special about them. They're pretty much at one size fits-all program.

Need more mechanics like you ken good work

Great video.

U1510 sets when the shutter actuator takes a dump. U1510 is LIN BUS and the shutter has LIN BUS line to it. Replacing the shutter resolves the issue.

Man this is a great video

Nice looking truck!

I've had the same thing happen on my 2018 Silverado V6 and 2018 Camaro SS. I don't know if it is the strength of the spark or what, but it has happened various times. Thanks for your videos.

cold start rough idle can also be the high pressure investors as well its covered up to 100k miles had it happen to my 2017 silverado

I've seen this multiple times in person, Same white to.

This was a good video to keep on the back burner for the oil “I seen this RU-vid video once” Then reach down and plug it in with the lightning pack still connected😂

Hay u do a very good job thank u

Guess i will check this once go back to work monday. See if that causing the ticking noise.

my 2003 Tahoe has an additional AC compressor belt and tensioner. Both wear quickly because of the location. When the belt looses resilency and tensioner get rusty it sounds like a valve tap.

Yup, wires coming off is not a super common issue but it does happen enough for a TSB! There's also a TSB for the radiator shutter wire getting pinched, and needs to be rerouted, or replaced if rubbed through.

Eric O at south main auto just replaced one of those shutter assemblies and it was a pita to do.

Had this happen on my #7 on my 5.3L as well. Misfire only happened at high speeds and was random but not enough to trigger a code. We thought it was the transmission slipping when accelerating. Honest transmission shop owner drove it and in 1 min said “this is not a transmission, but i have a hunch”. Took a look under the hood and found it, Plugged it back in and hasnt been a problem since. Guy refused to let me pay him.

I have an F150 with a 4.2 V5. It had a hydro lock and afterward developed a ticking sound. Turns out the rod was bent and the big end was turned just enough to kiss the piston skirt.

I have the same code on mine, and it reads misfire too. I'm going to check that out.

I got 270k miles on mine. Been tapping for at least the last 100k. I took off heads (had leaking head gasket) , did VLOM mod and re seated the valves. New guides, and sanded the heads to .001 with a piece of glass and sandpaper. Cam was good, lifters were good. Been 5k miles after repair and all is good. Crazy what these engines will go through..

Wish my ticking on my 6.0 in my H2 Hummer was a plug wire coming loose. Mine is those stupid ass rusty exhaust manifold bolt heads that break off. That is a nice a Silverado, that color and whole package is exactly what I want eventually.

any conclusion on the wreck? any frame damage?

My 09, 5.3, barely started ticking and dealer replaced Cam and lifters at 4 years 364 days, under warranty, 60k miles. Didn’t tap that bad. Technician said he replaced lifters with LS7 lifters. 135K miles and no problems. Been using Mobile 1 since day one.

5.7 never let me down nor missed a beat

Happened twice to us too. The Chevrolet dealer said they fixed our rig. Turns out they put in the old parts that we just ordered and she got to Arkansas to have the lifters fail again. We got a new engine. Hate chevrolet.

I like how thorough you were with your investigation. I'm a roofer and I do the same type of thing with roof repairs. I think you need some work on your conclusion drawing though 🤣 the hood could have easily just been taken off for better access, looks ECT and the truck could have more easily been jumping another vehicle vs needing a jump. Good work though! Will watch more for sure.

Hey Kenny have you ever saw P219A Fuel / Air ratio imbalance ? 07-3 Chevy Silverado / Tahoe

what's the obd2 scanning tool you have? make and model. would love to get one

Happen in Mexico 2015 4.3L Spark plug wire came loose, misfire on hard throttle.

I had a rattling noise, no codes that sounded just like it was under my driver's seat & would happen on a smooth road, rough road, while in gear but when I put it in neutral it would go away! It would never happen when a Tech Test Drove it! Found out it was a loose passenger side hood bolt on my 02' Blazer ZR2 4x4. Funny how these noises can travel.

I've got a 5.3 that did that, it ended up being the o ring that seals the oil pick up tube to the pump. The o rings degrade from heat.

Great videos. Subbed.

my 2014 did that a couple weeks ago after i put the new plug wires on. the old ones were on there solidly. perhaps they changed something on the wires themselves?

I see quite a few like that or loose spark plugs wiggling. Usually the customer saved a buck by doing their own spark plugs.

I'll check today

Back in 16 I got a 13 GMC with 10K on it put a little 6K on it and a dod lifter did indeed fail. Found out it had pistons rods and bearings done just before I got it Never knew why and far as I ever found out or was able to tell it was not a abused truck I got rid of that POS soon after I got i back Thankfully it was still under warranty

This is obviously a common problem. I had that exact same problem with my 2014 Sierra sle 1500. Also on a 5.3 liter engine and also the same cylinder. I knew exactly what the problem was as soon as I heard it, as this happened 3 or 4 times. I am pretty sure that the issue is that the wire is just a little too short and loosens from tension.

I have a 2018 z71 just had trans replaced luckily under warranty no charge 121.000 miles i dread motor doing tick

Why did the wire come out? Probably not clicked in when installed. Or maybe some one climbed in for other repair and pulled it off accidentally. .

Does the tick speed up with acceleration when it is electrical ? I would guess yes but am just starting to learn.

Thanks bro

A loose sparkplug? Would be nice if that's all it was. Been ticking for 10k miles. Was diagnosed as a bad lifter. I'll be double checking that tomorrow.

Could the lin bus module issue be a possibie dead battery. I had a same thing happen with my 2018 chevy malibu that i used to have?

Sweeeeeeeeet Thank You, great video. Subscribed

The shutter function isn’t for dynamics. It’s to help the motor get up to operating temperature faster

I had a similar ticking coming out of my car when I was younger. Believe it or not it ended up being an exhaust leak at the manifold.

Sometimes at night in total darkness, you can check your plug wires for leaks if you see a multitude of tiny blue sparks. I used to do this to know when to replace them. A lot of engines now with coil packs don't have wires but can be checked in other ways by using a plug tester against the block. I had a 2014 5.3 Vortec that developed a tick under warranty at 65k miles. The dealer replaced the lifters and it ran fine up to 105k miles and one day no oil pressure. Had it toed in believing it was an oil pump. The mechanic called and said the oil pump was fine but the main bearing and oil journals there were not allowing oil to circulate and the engine needed to be replaced. Got a factor Silverado new engine for $9,000. with a 30k mile warranty. I wonder to this day if this mechanic was honest as the truck ran fine with no engine noise just with no oil pressure. Is this a common way for engined to need replacing? I stopped driving it immediately when I saw the gauge say 0 oil pressure but it was running well at the time. This mechanic has always been honest in all the years I've used him. Changed transmission fluid when new engine put in and had ran great last 45k miles.