Where are the knock sensors on a 2011 Silverado HD 6.0 Vortec?

Ballinonabudget · October 12, 2020

2011 Chevy Silverado 2500 HD , 6.0L Vortec V8

In the middle of working on this truck, and can't find the knock sensors. Are they under the intake on this year? Half the search results say go through the wheel well on the sides of the motor, the other half say under the intake.

The new sensors definitely don't look like the style that normally go under the intake. I just can't find them anywhere on the block though.

Any help is really appreciated, I'm working on it right now.

Edited October 12, 2020 by Ballinonabudget

casey.mikl · October 12, 2020

Under the intake in the middle of the valley

Sent from my iPhone using Tapatalk

Ballinonabudget · October 12, 2020

5 minutes ago, casey.mikl said:

Under the intake in the middle of the valley

Sent from my iPhone using Tapatalk

With this style of sensor?

http://imgur.com/gallery/GaSEkJ1

Edited October 12, 2020 by Ballinonabudget

casey.mikl · October 12, 2020

The ones I’ve seen in the valley have a connector on top. I have not seen a knock sensor on the side of the block. And I have not had the intake off my 2011

Sent from my iPhone using Tapatalk

Ballinonabudget · October 12, 2020

3 minutes ago, casey.mikl said:

The ones I’ve seen in the valley have a connector on top. I have not seen a knock sensor on the side of the block. And I have not had the intake off my 2011

Sent from my iPhone using Tapatalk

Thats the problem, all the knock sensors Ive seen that go under the intake are the little drum/cylinder metal ones with the nipple type connector sticking straight up out of them, these are totally different... only ever worked on the old style and can't find ANY information on this online.

davester · October 12, 2020

I would suggest getting a subscription to the full service manual at a site like alldatadiy.com (or other sites), relatively cheap (about $50 for five years), and it tells you how to repair most stuff on your truck.

casey.mikl · October 12, 2020

I’m going to go look at my truck.

Sent from my iPhone using Tapatalk

casey.mikl · October 12, 2020

Okay I think I’m wrong. Guess GM moved them to the side of the block. When your under the truck. There appears to be one infront of the starter and one on the other side of the block. They look covered by a large silver thermal type cup to prevent damage or heat.

Sent from my iPhone using Tapatalk

CamGTP · October 13, 2020

The knock sensors are only under the intake on LQ4 and LQ9 6.0 engines. All the rest are on the side of the block, those include LY6, L96, L76/L77 engines.

The year break down is 1999-2007 for under the intake and 2007.5+ for on the block for 6.0's.

C/K Man · October 13, 2020

2011 should be an L96. Yes, knock sensors are on the either side of the block, right between the starter and engine mount, left between the oil cooler lines and engine mount. They may have thermal insulators covering them. Much better location, they seldom give trouble since GM moved them.

Ballinonabudget · October 13, 2020

Thanks for the help everyone. I found the sensors on my own a bit after posting... truck had so much rust it was not fun at all. Had to pull the starter to access the passenger side sensor, sort of a PITA.