dmax 3.0 and the cold (-30F)

[iamlegion]

Concerning the console heat issue, per the dealer once GM got back to the tech (the tech created a case with them) GM provided instructions for the tech to follow. Sounded like GM is aware of the problem and it isn't specific to diesel versions. The truck hasn't been back to the dealer as we are still waiting parts for the other issue.

More intel on the behavior:
When it's cold outside if you turn your hvac off and hold your hand directly above the charging pad you don't feel a breeze. But then turn on the hvac to 'auto' do you feel a cold breeze (and the rest of the vents are putting out heat)? On my wife's truck it is very obvious when the temp is say -10F or lower (we are in a -20 to -30F stretch right now) AND the vehicle is warmed up. My guess is that the auto setting is drawing outside air directly into the cabin at the center console, but that behavior isn't the normal as the other 2021's I've been around don't behave the same (I've tried this on other 2021 denali's).

FWIW this is by design to keep wirelessly charged phones from over heating. There is intentional AC ducting But freezing and over-cooling is not good. Does GM happen to recommend a grille cover for your temps?

question - does it get as cold without a phone there?

 

[steiny93]

FWIW this is by design to keep wirelessly charged phones from over heating. There is intentional AC ducting But freezing and over-cooling is not good. Does GM happen to recommend a grille cover for your temps?

question - does it get as cold without a phone there?

GM isn't recommending a grill cover or anything else beyond blocking or unblocking the vent within the console.
It gets cold with or without a phone on the charger.


No resolution yet; nor do I anticipate one to ever occur.

 

[UsualSuspect]

Can you use the re-circulation setting, or does that only work with the A\C?

 

[steiny93]

Can you use the re-circulation setting, or does that only work with the A\C?

The cold happens regardless of the hvac setting. IE, you can feel the cold hitting the back of the console. This isn't cold from the ac, it's outside air.
A soda in the front cup holder will freeze when your driving down the interstate at -30F for example.

 

[Seamus]

where do you live with -30 degrees???

 

[steiny93]

where do you live with -30 degrees???

ND / Manitoba

 

[Alexandroid]

ND / Manitoba

I'm debating between a new 6.2L and a Duramax. I will have to park outside without the block heater in -10F sometimes. How well does a diesel perform in the subzero temperatures of ND? Any trouble starting up in the morning?

 

[steiny93]

I'm debating between a new 6.2L and a Duramax. I will have to park outside without the block heater in -10F sometimes. How well does a diesel perform in the subzero temperatures of ND? Any trouble starting up in the morning?

these baby diesels start as good as the 6.2s in the cold; zero issues to date in regards to starting; we have both