Chevy LV3 4.3L

Joined
Feb 3, 2020
Messages
345
Location
Great Lakes
I am currently working on a 2016 Chevy LV3 4.3L, the manual and the oil cap says 5W-30, however, the 2014 version of this same engine(First year made) says 0w-20, then I come to find out, there problems with this engine oil pump and timing chain tensioner breaking, Manual even states when extremely cold use 0w-30 for better starting. No mention of 0W-20.

Point being is 0w-20 did not provide "acceptable" wear levels, so it was changed to 5w-30 for later models.

No question here merely another data point why higher HTHS is better.
 
Joined
Dec 19, 2006
Messages
2,015
Location
Michigan
Got any proof of this change (maybe from an original 2014 owners manual) or are these just internet man “facts”?

From the parts side, the oil cap initially released for the 2014 model was p/n 12650076. That p/n is a 5w30 cap. It goes through a few supercessions, 12655473, then to the current 12662196. All of them are 5w30 caps.

12667313 (superseding 12634022 from 2014) is the 0w20 cap and was released for the 5.3.

The parts catalog doesn’t support your claim that 2014 had a 0w20 cap. The only part ever released for the 4.3 is a 5w30 cap. You can check the p/n supersession yourself.

While I had the catalog open, I also checked the oil pump p/n. 4.3, 5.3, and 6.2 all have the same oil pump (p/n 12686433). Why would the same oil pump “break” because of less HTHS in 0w20 in one engine (4.3) and not the other (5.3)?
 

Drew7a

Thread starter
Joined
Feb 3, 2020
Messages
345
Location
Great Lakes
Got any proof of this change (maybe from an original 2014 owners manual) or are these just internet man “facts”?

From the parts side, the oil cap initially released for the 2014 model was p/n 12650076. That p/n is a 5w30 cap. It goes through a few supercessions, 12655473, then to the current 12662196. All of them are 5w30 caps.

12667313 (superseding 12634022 from 2014) is the 0w20 cap and was released for the 5.3.

The parts catalog doesn’t support your claim that 2014 had a 0w20 cap. The only part ever released for the 4.3 is a 5w30 cap. You can check the p/n supersession yourself.

While I had the catalog open, I also checked the oil pump p/n. 4.3, 5.3, and 6.2 all have the same oil pump (p/n 12686433). Why would the same oil pump “break” because of less HTHS in 0w20 in one engine (4.3) and not the other (5.3)?
Look up GM bulletin 13314, on how to replace the defective oil pump, Pat number for the oil in the Bulletin is 0W-20.
 
Joined
Mar 30, 2009
Messages
72
Location
Louisville, KY


I just watched a tear down on this engine last night. Can't say for sure that the lifter failure was oil related but it sure doesn't look like the oil was treated well in this engine. He notes the balance shaft adds extra stress to the timing system that the V8s don't have to deal with.
 

Drew7a

Thread starter
Joined
Feb 3, 2020
Messages
345
Location
Great Lakes
Change from 5w30 to 0w20 is for CAFE only.
agreed but what I am saying is they went from 0w-20 to 5w-30

When these engines were released in 2014 defective oil pumps GM wanted these oil pumps (for the LV3 and L83) replaced on all vehicles in dealer stock and based on the GM bulletin speced 0w-20., however later years these same LV3's showed up with 5w-30.

Bulletin link below.

GM Bulletin 13314
 
Joined
Dec 24, 2013
Messages
190
Location
New Orleans
agreed but what I am saying is they went from 0w-20 to 5w-30

When these engines were released in 2014 defective oil pumps GM wanted these oil pumps (for the LV3 and L83) replaced on all vehicles in dealer stock and based on the GM bulletin speced 0w-20., however later years these same LV3's showed up with 5w-30.

Bulletin link below.

GM Bulletin 13314
I am a former tech for ford, the coyote 5.0 for 2021 model year went from 5w20 to 5w30 to fix the oil consumption issues.
 
Joined
Dec 19, 2006
Messages
2,015
Location
Michigan
Media release from March, 2014 for the LV3


What's that oil cap say?

LV3.jpg


#PI1001 2014 Silverado and Sierra New Model Features Guide
June, 2013
SAE 5W-30 is the required viscosity grade for the 4.3L engine.

LV3 has always spec'd 5w30. In the manual, on the oil cap, in the parts catalog, in the very first PI introducing the 2014 model vehicles: 5w30.

Point being is 0w-20 did not provide "acceptable" wear levels, so it was changed to 5w-30 for later models.

That statement has no basis in fact because the LV3 never spec'd 0w20. No broken tensioners because of 0w20. No oil pump problems because of 0w20. No problems with HTHS because of 0w20. There was no change in specified viscosity. It has always been 5w30.

Seems like a case of Confirmation Bias
 
Last edited:

Drew7a

Thread starter
Joined
Feb 3, 2020
Messages
345
Location
Great Lakes
Media release from March, 2014 for the LV3


What's that oil cap say?

View attachment 103192

LV3 has always spec'd 5w30. In the manual, on the oil cap, in the parts catalog: 5w30.
GM Bulletin 13314

Are you are saying this bulletin is wrong?
 
Joined
Oct 10, 2018
Messages
579
Location
Rochester, NY
The V8s use 0W20, but they also have an 8.5 quart capacity. The V6 has a 6 quart capacity. That right there may even things out some.

All I can say for sure is that I have a 2016 4.3 and I love it.
 

Drew7a

Thread starter
Joined
Feb 3, 2020
Messages
345
Location
Great Lakes
Media release from March, 2014 for the LV3


What's that oil cap say?

View attachment 103192

#PI1001 2014 Silverado and Sierra New Model Features Guide
June, 2013


LV3 has always spec'd 5w30. In the manual, on the oil cap, in the parts catalog, in the very first PI introducing the 2014 model vehicles: 5w30.



That statement has no basis in fact because the LV3 never spec'd 0w20. No broken tensioners because of 0w20. No oil pump problems because of 0w20. No problems with HTHS because of 0w20. There was no change in specified viscosity. It has always been 5w30.

Seems like a case of Confirmation Bias
I went back read some of your previous, posts and you like to bloviate.

To say "That statement has no basis in fact because the LV3 never spec'd 0w20." is utter non-sense, Yet you fail to address why GM on October 2013 (under Bulletin 13314) Service update for Inventory vehicles for the L83(5.3L) and LV3(4.3L) engines refers to part number 19259487 (0w-20 DEXOS) and for our neighbors 19259784 (also 0w-20) as the replacement oil? If this bulletin is not fact based, then what is?
 
Joined
Dec 19, 2006
Messages
2,015
Location
Michigan
Yet you fail to address why GM on October 2013 (under Bulletin 13314) Service update for Inventory vehicles for the L83(5.3L) and LV3(4.3L) engines refers to part number 19259487 (0w-20 DEXOS) and for our neighbors 19259784 (also 0w-20) as the replacement oil? If this bulletin is not fact based, then what is?

Somebody missed the difference. That's the answer. Bulletins are updated every day to correct errors, omissions, add info, and remove info. Hang out around GM service info for even the shortest amount of time and you'll see it changes pretty regularly.

#13314 is a Service Update campaign. In this case, it's only for certain vehicles in dealer inventory that were identified by IVH.

It affected all of 42 trucks.

By the time somebody noticed only one oil p/n was on the parts list (if they ever did notice), all 42 trucks had been fixed and it didn't matter anymore.

Since we're playing the "fail to address" game: Care to address why there is a media photo of the 2014 engine with a 5w30 cap? Care to address why the New Model Features call out 5w30 for the 4.3L? Care to address why you can't seem to find a 2014 owner's manual that specs 0w20 for the 4.3L?

Finding an owner's manual shouldn't be difficult. They printed nearly a million of them to go in the glove boxes of every Silverado and Sierra built in 2014.

I couldn't care less about your thoughts on 0w20, but if you're going to lie and attribute part failure because you mis-remembered or "came to find out about" an oil spec that simply doesn't exist, I'm going to "bloviate" about it.
 
Joined
Apr 30, 2004
Messages
1,618
Location
Indiana


I just watched a tear down on this engine last night. Can't say for sure that the lifter failure was oil related but it sure doesn't look like the oil was treated well in this engine. He notes the balance shaft adds extra stress to the timing system that the V8s don't have to deal witzzzh.

I love that guy's teardowns. He's smart but not cocky. The only thing usually lacking is any info on the history of the unit, miles/hours/etc and maintenance as he just buys junk cores blindly. But always interesting.
 
Joined
Mar 15, 2012
Messages
1,617
Location
PEARL River la
You need to understand bulletin. Stated as fact was caused from installation error not 0w20
Only mentioned 0w20 Dexos oil for fill-up and 11qts.
 
Top