The CAR WIZARD Shares Top 10 Issues with LS Truck Engine

I'm retired now, but I was a GM parts guy for 17 years. This list of issues is absolutely correct.

Your LS has an issue? No problem: LS SWAP IT!

I've had my Silverado for 11 years with the original 5.3, 398,000 miles and haven't had any of these problems. It's been the best truck I've ever owned.

I have a 2003 Silverado 4.3 v6 with 235,000 mile when I got it , it had 11,000 mile on it . I can testify all this repairs are spot on

Don't tell Hoovie but I clicked on your video before his.

He's a natural shop teacher type .. being efficient with the words, helps the listener understand. Great video.

This dude is great... He gets right to the point and does not say the same thing over and over... LOL... Good job !!

I have owned over 100 vehicles in My life and now have a 2001 tahoe that I've owned for 5 years and it is the best vehicle I have ever owned. 5.3 with 235,000 miles and runs like a new car !!! Change oil every 3,000 miles and drive it like I stoke it.

I LS swapped my washing machine. This is a very helpful video.

Common issue number 11. Engine is consuming oil, and burning it out the exhaust. Fix: Replace the drivers side valve cover with the updated valve cover from GM. There is a problem with the baffling. It allows oil to be sucked up into the intake via the pcv port. This happens in these engine with 100,000+ miles on it.

Let me tell you common issues with LS engines.. The gauge clusters go bad

This is why I prefer GM trucks. There's no shortage of issues, but everything is pretty minor and cheap to fix, and a lot are repairs I can do myself.

Compared to most other engines, (ford 3v, BMW V8 to name few) these "problems" are nothing and any DIY guy with common tools can fix in his driveway.

Now I have it: He's the Bob Ross of car repairs!

When we had to do knock sensors, we put a good amount of high temp rtv around the gaps of the sensors to keep any debris out of the sensor wells. It's incredible how much gunk gets caught in that area.

Yep. We own lots of the 99-03 Silverados and we have had the oil pickup tube o-ring, exhaust manifold bolts, knock sensors, abs control module, a/c belt tensioner, gauge cluster and ground wire. This guy knows his stuff!

you should make more videos like this, good knowledge for that engine.

Love the humor Wizard. Great content. 12 years owning a 2003 GMC truck, now over 300k, this list is spot on accurate.

Here's another VERY common issue you can add to your list: Oil pressure gauge indicates 80psi, engine on or off. Often times the sensor is also leaking. The false reading is due to a faulty oil pressure sending unit, which sits on the top of the eng. block, driver's side, behind the intake manif., right next to the firewall. A real pain in the ass to get to, but can be reached by disconnecting the fuel line quick disconnect. Repair shops might tell you the intake manif. has to come off, but it doesn't. Reaching the sensor requires a 3/8ths or 1/2-inch drive extension with a 1&1/16th" deep socket to fit over the sensor. Oh, and a flashlight and mirror would also help to see what you're doing. Be prepared to lay on top of the engine (after having removed the eng. cover) and muster up all the patience you have. You'll need it!

As the original owner of a 2003 Suburban with 84, 000 miles, your video helped me understand the non-fill issue with the gas tank. Thanks and keep up the great information.