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active aero shutters

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revrnd Senior Enthusiast

revrnd

Posted
Posted
On 11/8/2020 at 12:25 PM, saskfarmer said:

2020 chev 2500hd with duramax have the auto shutters wanted to put on bug screens this summer was told they are not available and not recommended because of the shutters has anyone else run in to this or has anyone put on bug screens with the shutters on. Truck came with a winter front which seems okay to put on truck in winter but not supposed to restrict airflow in summer.

Looking for a winter front for my 2024, there doesnt appear to be 1 available for the HDs after 2022 from GM.

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newdude
newdude

I had some built after OPs truck  (so Feb build) and some before Jan 2020 and what I found was consistent with the whole plow prep deal.     I also checked dually VINs this morning, no duall

GMC4Zee
GMC4Zee

Just to be clear the reason for the active shutters is to retain engine heat/. BTW I have a 2021 AT4 3500 with plow prep and no shutters.

Crazy Canuck
Crazy Canuck

I am pretty sure that the purpose of the active shutters is to help with aerodynamics.  I am not sure how the GM system works but the 19 f150 I got out of for my 2500 Denali actually would prevent the

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revrnd Senior Enthusiast

revrnd

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Posted
2 minutes ago, redwngr said:

 

Did they change rpo code from WMI to VMI ? 

 

You might be on to something, there is a WMY code on my truck. It doesn't show up in the AC Delco RPO chart that I have.

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revrnd Senior Enthusiast

revrnd

Posted
Posted (edited)
1 hour ago, redwngr said:

There is a winter front included for 2024 and 2025 6.6 dmax. 

There is also a standard block heater on that engine.

 

image.thumb.png.dbacd690558baabc1f6f72b540f14b6a.png

 

 

Do you have a PN?

 

EDIT: Brother sent me a pic of the label for the winter cover on his 2024 (an LTZ). PN is 85665374

Edited by revrnd
Added PN
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