MarkJohnson

Wonderful information- I'm ordering my tube right now. As to the original short tube in the VC- can't you just take a heat gun to it to distort it and yank it our cleanly with some pliers..........

C'mon- somebody's gotta know something........

Issue been going on for awhile comes up as Po6dd code. Truck is a 2016 Sierra L83. It's intermittent, DTC was on, made appointment at dealer- get there the light goes off, no code. On the way home 2 miles later DTC back on. Getting lousy gas mileage which I believe is a result of the valve/ solenoid being stuck off which causes the oil pump to go into high volume/ pressure mode. Also using oil more noticeably, over filling intake manifold. I read somewhere and wanted to ask and verify- were the oil pump solenoids/ valves upgraded/ updated like around 2017? Or is it still luck of the draw? An could having DOD tuned out have an impact on said solenoid becoming stuck? I'm on the fence about trading up to something a bit newer... TIA

Cool- blue label all the way. I'm looking right now at an 18, 8 speed currently have 16, 6 speed. Thru all the reding I've done the blue fluid flush and tuning are the remedies. I've looked at the tune files from earlier and later(18) trucks and some tables have been added such as torque converter slip which is where I've been able to produce TC shedder on my 6L80. Great threat, I've learned alot reading it.........

Let Us know what happens....

Doesn't GM have their own fluid, a dexron HP something.......