New problem with this 2012 Yukon XL 1500 Denali 6.2L. I really hate this truck! GREMLIN is back

[testdepth]

My wife drove this truck 35 miles one way with no issues. On her way back home about 15 miles from home while driving 55 to 60 mph she hears a clunk sound, rpm gauge goes to zero, stabilitrack and traction warnings come on and both are stating they are off on the dash and the truck starts chugging so she pulled over. She let it set a few minutes and it started back up but check engine lights is on. She continued to drive it home and at about 5 miles from home it does the exact same thing again. I have never seen a problem like this.

I took this truck to a mechanic I know at a Chevrolet dealer. He has 30yrs experience with GM vehicles. He attached his scanner which tells him the crank sensor I put in the truck 1 month ago is bad. We also discovered one of the "oil filled motor mounts is bad".

I'm not sure if a crank sensor can cause all of what happened to the truck today or not?

If any GMC engineers read this I would like to say all of you are clowns and none of you must work on cars yourself.
Oil filled motor mounts, really?
Oil pressure sensor installed all the against the rear firewall and down 6 inches.
CAM sensor installed behind the crankshaft pulley that you have to remove to get to it.
Crankshaft sensor installed behind the starter.

 

[prestige30165]

I already advised you to replace the negative battery cables.
My 2012 was doing the same thing and this corrected it, Been 2 years and no problems
The factory went cheap on the copper in the cables and they deteriorate inside the cable.
Do an internet search and you will find info, This is how I found what it was on mine..

 

[basstracker89]

 

[olerambler]

I already advised you to replace the negative battery cables.
My 2012 was doing the same thing and this corrected it, Been 2 years and no problems
The factory went cheap on the copper in the cables and they deteriorate inside the cable.
Do an internet search and you will find info, This is how I found what it was on mine..

Yeah company goes cheap yet the customer pays the price. Quality has went S&$@ on all these newer model automobiles see in news on regular basis recalles on makes& model vechiles

 

[testdepth]

I'm still having problems with this Yukon Denali 6.2L.

This morning after sitting all night my wife goes to an appointment. After normal cold start she started down the road at 45 mph and gets 5 miles from the house when the truck while running down the road starts chugging/choking back and forth and RPMs are going up and down. Truck felt like it would stall but didn't. She drove it back home and parked it. Truck did not have an engine code or code for anything. After warm up and engine at normal temp I used my TOPDON code reader to find no codes or check engine. I then took it to a dealership mechanic that has worked on GMs for 30yrs. He ran his reader and no codes or check engine. He did the relearn on the crank sensor again. He also checked for any updates to the ECM but there were none. Right now the RPMs cutout at 3500 and it's supposed to be 4000. I did it a few times by slowly pressing the foot pedal and watching the RPM climb. Once it gets to about 3500 it automatically reduces back to idle of 600 rpm. Truck is not reliable as is. Any ideas?

In the last few weeks I have replaced the following parts with new:
OEM AC Delco fuel pump
Negative battery cable
AC Delco MAF sensor
Crank sensor (did the relearn using my scanner and the dealer scanner)
Throttle body
Plugs and coil packs
Valve cover gaskets
EVAP Purge Solenoid
EVAP cannister

Help!

 

[testdepth]

This problem is not consistent as I just drove this car after it sat for a few hours and the engine was cold. I drove it at multiple speeds and stops for about 20 minutes. I turned left and right and went over several bumps. This truck ran normally the entire time.

 

[Asbestos]

Replace the wife.

 

[fslc94]

What happened is they put a car engine in a truck and it’s not meant for that. The 6.2 is for Camaro’s, Vettes, CTSV’s, etc. why the hell they didn’t put the 6.0 in these is beyond me🤷🏻‍♂️💯

 

[Dan Muk]

Replace the wife.

Funniest shyte I’ve read all day!

 

[basstracker89]

Funniest shyte I’ve read all day!

He ain't wrong........