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Active Grill Shutter question

Reid Kahrs
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Reid Kahrs New Member

Reid Kahrs

Posted
Posted

Hello All from Wisconsin,

 First post here.

Long story short. Had an installer put a home user snow plow on my 2020 1500 Diesel last week. Of course now that it’s in the wires to plug it in are hitting the lower grill shutter blade. My question is, rather then completely deleting the whole shutter system. Can I simply just remove the one lower shutter to keep it from throwing the fault code??

 

 Thanks

fatwhiteboy Enthusiast

fatwhiteboy

Posted
Posted
17 minutes ago, Reid Kahrs said:

Hello All from Wisconsin,

 First post here.

Long story short. Had an installer put a home user snow plow on my 2020 1500 Diesel last week. Of course now that it’s in the wires to plug it in are hitting the lower grill shutter blade. My question is, rather then completely deleting the whole shutter system. Can I simply just remove the one lower shutter to keep it from throwing the fault code??

 

 Thanks

Hello Reid, our company makes these shutters.  You can cut a notch in the blade that is in your way or completely remove it.  That will not throw a code.  It will only throw a code after 3 attempts of not opening or not closing.  It reads the actuator position located in the center of the frame.  It does not have any limit switches on each vane.  So basically you can remove all vanes as long as the computer "thinks" it is moving them by reading the actuator position.  I hope that I helped.

  • Like 3
jnissen Enthusiast

jnissen

Posted
Posted

Why can’t the wiring be routed correctly? Seems like modifying the shutter for a clear wire routing problem is not the direction to go.

Reid Kahrs New Member

Reid Kahrs

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  • Author
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Thanks for the quick replies.

Wiring wise the problem is that Western Plows didn’t accommodate the wires longer for having the shutters. ??‍♂️ Sometimes Engineers don’t get the whole picture I guess. 
 

I just got done popping the one vane out and it took less then a few minutes to do. Cleared the light and did not get an instant pending code to pop up like before so thinking I’m in the clear now. Will update if it’s still an issue. 
 

Can clearly see where they were rubbing though. 

newdude Senior Enthusiast

newdude

Posted
Posted

Trucks with VYU factory plow prep delete the shutter assemblies all together for maximum cooling airflow.  GM and the plow mfgs always say VYU or don't put a plow for a reason.  

 

Diesel 1/2 ton's don't have plow prep available on them.  Heads up, you may get CAC efficiency codes by hanging a blade on there.  Good luck.  

  • Like 1
Rob Mugs Enthusiast

Rob Mugs

Posted
Posted
2 hours ago, fatwhiteboy said:

Hello Reid, our company makes these shutters.  You can cut a notch in the blade that is in your way or completely remove it.  That will not throw a code.  It will only throw a code after 3 attempts of not opening or not closing.  It reads the actuator position located in the center of the frame.  It does not have any limit switches on each vane.  So basically you can remove all vanes as long as the computer "thinks" it is moving them by reading the actuator position.  I hope that I helped.

Great to hear, thanks!  I thought I read that you needed "X" resistance on the actuator so they didn't toss a code.  Not true?  Could technically just pull em out and be set?

fatwhiteboy Enthusiast

fatwhiteboy

Posted
Posted
1 hour ago, Rob Mugs said:

Great to hear, thanks!  I thought I read that you needed "X" resistance on the actuator so they didn't toss a code.  Not true?  Could technically just pull em out and be set?

I am mechanical, not electrical but I work the electrical engineers that are much smarter than me.  I was told that the PCM monitors the actuator motor current.  It trips a code when it "sees" a high current draw if a vane is obstructed or broken.  Kind of the same principle with to articulating running boards and power windows motors, when they hit resistance they reverse.  The shutters try 3 times to open or close and after the 3rd fail it trips a code.  So if you want pull all of them it will not throw a code but I don't see a reason to do that unless you do some heavy mods like a supercharger intercooler where you need more cooling.  Mine are still in.

  • Like 2
Rob Mugs Enthusiast

Rob Mugs

Posted
Posted
1 hour ago, fatwhiteboy said:

I am mechanical, not electrical but I work the electrical engineers that are much smarter than me.  I was told that the PCM monitors the actuator motor current.  It trips a code when it "sees" a high current draw if a vane is obstructed or broken.  Kind of the same principle with to articulating running boards and power windows motors, when they hit resistance they reverse.  The shutters try 3 times to open or close and after the 3rd fail it trips a code.  So if you want pull all of them it will not throw a code but I don't see a reason to do that unless you do some heavy mods like a supercharger intercooler where you need more cooling.  Mine are still in.

Keeping mine in too, but it's very good knowledge for some of those like you mentioned.... or maybe me after I win the Lotto!

Moend Enthusiast

Moend

Posted
Posted

I have a snowbear plow so it might be smaller wire (lesser bundle of wires) but there is a spot below the shutter that i fished mine throw and it works fine, i can try to take a picture.

Reid Kahrs New Member

Reid Kahrs

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All good now. All monitors are set with no further codes.

For as little as the plow will be in the truck I’m not worried about CAC codes. The plow was put on to do my own driveway when it snow which is about a 1/4 mile long so the blade will be on for about 30-40 min each storm and then taken right back off when done.

  • Like 1
  • 2 years later...
Ronjon Enthusiast

Ronjon

Posted
Posted
On 11/30/2020 at 4:03 PM, fatwhiteboy said:

I am mechanical, not electrical but I work the electrical engineers that are much smarter than me.  I was told that the PCM monitors the actuator motor current.  It trips a code when it "sees" a high current draw if a vane is obstructed or broken.  Kind of the same principle with to articulating running boards and power windows motors, when they hit resistance they reverse.  The shutters try 3 times to open or close and after the 3rd fail it trips a code.  So if you want pull all of them it will not throw a code but I don't see a reason to do that unless you do some heavy mods like a supercharger intercooler where you need more cooling.  Mine are still in.

So my current situation they've started falling out and the code is tripping. Thus stopping my remote start. I can remove the busted one or all of them. So long as the motor is unobstructed it should stop throwing the p05ae code? When I install a winch bumper can I just relocate the actuator motor?

Thank you!

 

2020 lm2 Duramax z71.

  • 2 months later...
W4LWQ Enthusiast

W4LWQ

Posted
Posted
On 12/15/2022 at 5:09 PM, Ronjon said:

So my current situation they've started falling out and the code is tripping. Thus stopping my remote start. I can remove the busted one or all of them. So long as the motor is unobstructed it should stop throwing the p05ae code? When I install a winch bumper can I just relocate the actuator motor?

Thank you!

 

2020 lm2 Duramax z71.

Well what happened?

Ronjon Enthusiast

Ronjon

Posted
Posted
19 minutes ago, W4LWQ said:

Well what happened?

Plastic got brittle I guess. Pieces started falling out.

  • 2 weeks later...
W4LWQ Enthusiast

W4LWQ

Posted
Posted
On 2/27/2023 at 9:03 PM, Ronjon said:

Plastic got brittle I guess. Pieces started falling out.

Did you remove them all? Still get codes?

Ronjon Enthusiast

Ronjon

Posted
Posted
1 hour ago, W4LWQ said:

Did you remove them all? Still get codes?

I'm going to gut them when I install a new bumper and tranny cooler. Hopefully between the tuning companies now available (RunVSE and PPEI) they can remove their p codes. Since the dealership won't flash them out.

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