Sir Dan

From what I can find, the cam position sensor lives to the right of the vvt. (Can't see it in the pic) I'm starting to think the oil leak may be actually coming from that vvt plate gasket. Seems to many YouTube videos of that one. Still would like to know what the left one is though....

Hello all. I need some help finding out what the sensor or whatever it is called is in the photo by the arrow. It appears to be loose and leaking. Even after a thorough googling session I can't find any description or part number for it anywhere. WTF! Gmpartsdirect doesn't show it and the one diagram I did find called it an engine oil pressure sensor which I don't think is right. Its a 2016 5.3L engine. Thanks for any help!

My 2016 5.3L 8sp was not covered so I replaced the harness myself. https://www.gmwholesaledirect.com/oem-parts/gm-automatic-transmission-wiring-harness-24046895?c=az0xJnE9MjQyOTg3NTc%3D I think the part was $30 plus about $150 for gasket/filter/fluid. I didn't take the exhaust apart, just used a jack to move the whole engine/trans up for clearance. The only fiddly part was getting the correct fluid level back in.

Probably the torque converter. I think the problem was mainly with the 8 speed transmission.

At least you HAVE a dipstick. Don't even have one on my 8 speed and checking the level involves jacking, leveling, wrenches, and calculating temperature algorithms!

My wireless charger worked with my old phone but not my new one. I think it's a problem with the charger being outdated or something. There are some people who change the module under the charger with an updated one but I don't use mine enough to bother. I have aftermarket AMP research power steps so can't comment about yours but I have heard that the factory ones are junk.

Mobil 1 HP Blue Label is the only fluid recommended for the finicky 8 speed. Even with this fluid they are prone to torque converter shudder and harsh/delayed shifting. Gotta be the worst transmission GM ever dumped on us poor folks...

I know there was a recall that addressed this issue on my 2016 that involved software flash to help avoid this problem with more electric boost. As the vacuum pump wears it gets to the point that even the electric boost can't help.

When I took mine out, I had to put the tire back on for extra leverage and my dad had to lean all his weight in on it to move it in enough to get the clip out.

Go to another dealer. Not normal wear at all. Or pull it off and check it yourself. Great reason to learn how to do brakes if you don't know already.

Somebody's had the trans out, probably to replace the converter or install updated anti drainback valve. Are you original owner?

Sadly, the general has gone down the old crapper lately. Mostly with poor engine component and tech quality.

Vacuum booster pump going bad? Take the serp belt off and run engine momentarily to see if the noise quits.

The dealer usually needs to reprogram the BCM if you add electrical options which your truck wasn't originally equipped with.

You might get a better response to this if you post it in the Gmt900 section for 2007-2014 trucks.