2020 BABY Duramax (check engine lite)

[flhx]

Baby duramax’s complicated computer-controlled coolant management system is a nightmare with it’s multiple mechanical coolant diverters that have to work in harmony. It’s tranny needs separated from the motor at 110k miles for routine maintenance as well. It’s the PEOPLE that have to work on these complicated systems that I don’t trust to be fully trained, human error.

That's why when you do find a diesel tech that knows what hes doing you stick with them wherever they go.. and most of the good ones do move around trying to find the best opportunity they can until they find " A home" and they will finish their careers out. And yes the trans / Tc dont like to much power upgrades on the baby Dmax without getting into

 

[wildbill1973z28]

What was the check engine light for?

Routine scheduled maintenance or something else?

Also, those dash mounted mpg calculators do not replace a paper and pencil. Start recording your mileage and figure the mpg the old way.

Recall on #3 glow plug!

 

[wildbill1973z28]

Any code found from the CLE?

Zero code found?

 

[sniper22]

Wait what? ‘OneStar’ (assuming you meant On Star) called you and told you the engine would shut down if CEL starts flashing? Sounds like one of those malware scams where they create the problem and sell you the solution. Highly suspect.

If the cel starts flashing you best shut it down. Onstar called to inform owner that the CEL alert was something that could turn crucial

 

[patrick santorufo]

have you taken back to the dealer?

 

[Deleted member 93988]

When the baby went to see Dr. Chevy, did the good doctor perform any software updates to the ECM?

 

[BillsCamino]

Gonna have to wait until Jan 8 for answers.....OP on a one week vacation

 

[Falcon1]

Gonna have to wait until Jan 8 for answers.....OP on a one week vacation

Again lol

 

[Deleted member 93988]

Gonna have to wait until Jan 8 for answers.....OP on a one week vacation

Yeah I noticed that after I posted comment, op seems to be on vacation every other week.