Chevy Truck: Active Grille Shutter
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Low temps though? Sounds great for cold climates. I've had to cover my grille in a 1. 3L before just so the car could get to operating temperature some winters. Live 15-20 miles away and when you drive at 55ish without blocking the front, the temp gauge goes down as you drive and no longer have heat from the vents; it was below zero for a week or so iirc. This system I suppose does that for you; though I think since its passing through an outer grille, its effectiveness might still be accentuated by creating some kind of inserts for those openings.
Date: 2023-02-08
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Comments and reviews: 14
South
Just to clear some stuff up here is the description and operation of the active grille shutter right from GM service data:
DESCRIPTION AND OPERATION > ACTIVE GRILLE AIR SHUTTER DESCRIPTION AND OPERATION
The active grille air shutter system closes shutters in the front grille to enhance vehicle aerodynamics in driving situations where cooling and A/C loads are relatively low and high levels of front end airflow are not required. If high levels of airflow are required the active grille air shutter system will open one or both shutters. The control signal from the engine control module, ignition and ground circuits enable the active grille air shutter actuators to operate. If the conditions for opening the shutters are reached the engine control module commands the active grille air shutter actuators to open one or both shutters.
The dual active grille air shutter system consists of two aero shutter mechanisms located in the front grille for controlling the amount of air entering the engine compartment. It includes three wires; ground, power and a Local Interconnect Network (LIN) Bus serial data circuit from the engine control module to the shutter actuator. The engine control module determines shutter state based on various vehicle conditions such as vehicle speed, coolant temperature, fan state, refrigerant system pressure, A/C compressor state and ambient temperature. The engine control module has the ability to command each shutter individually to the open or closed positions through communications on the LIN Bus.
The actuators are powered by an ignition circuit that is active when the key is in the RUN position. The vehicle may have to be driven for up to 13 minutes at speeds greater than 41 km/h (25 mph) before a shutter begins to move. If low ambient temperature is detected, the shutters will remain in the closed position.
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Just to clear some stuff up here is the description and operation of the active grille shutter right from GM service data:
DESCRIPTION AND OPERATION > ACTIVE GRILLE AIR SHUTTER DESCRIPTION AND OPERATION
The active grille air shutter system closes shutters in the front grille to enhance vehicle aerodynamics in driving situations where cooling and A/C loads are relatively low and high levels of front end airflow are not required. If high levels of airflow are required the active grille air shutter system will open one or both shutters. The control signal from the engine control module, ignition and ground circuits enable the active grille air shutter actuators to operate. If the conditions for opening the shutters are reached the engine control module commands the active grille air shutter actuators to open one or both shutters.
The dual active grille air shutter system consists of two aero shutter mechanisms located in the front grille for controlling the amount of air entering the engine compartment. It includes three wires; ground, power and a Local Interconnect Network (LIN) Bus serial data circuit from the engine control module to the shutter actuator. The engine control module determines shutter state based on various vehicle conditions such as vehicle speed, coolant temperature, fan state, refrigerant system pressure, A/C compressor state and ambient temperature. The engine control module has the ability to command each shutter individually to the open or closed positions through communications on the LIN Bus.
The actuators are powered by an ignition circuit that is active when the key is in the RUN position. The vehicle may have to be driven for up to 13 minutes at speeds greater than 41 km/h (25 mph) before a shutter begins to move. If low ambient temperature is detected, the shutters will remain in the closed position.
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Fred
Some vehicles (chevys apparently as well) simply need to be put back onto the assembly line and run the line in reverse pulling the thing apart in reverse of the way it went together. I know, that won't help too much with things that 'snap together' with snaps you can't reach, release. Here in Arizona with the very low humidity, the metals on the cars last a century, but the low humidity causes the plastics to offgas, and become brittle in 10 years or so. Most of the time when you even carefully try to release some barbed plastic snap attachment, the plastic breaks.
Answer? Zip ties, bailing wire, hot glue, super glue, epoxy.
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Some vehicles (chevys apparently as well) simply need to be put back onto the assembly line and run the line in reverse pulling the thing apart in reverse of the way it went together. I know, that won't help too much with things that 'snap together' with snaps you can't reach, release. Here in Arizona with the very low humidity, the metals on the cars last a century, but the low humidity causes the plastics to offgas, and become brittle in 10 years or so. Most of the time when you even carefully try to release some barbed plastic snap attachment, the plastic breaks.
Answer? Zip ties, bailing wire, hot glue, super glue, epoxy.
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George
I remember reading about the shutter feature in the sales brochure when I bought my 2017 Canyon Duramax, but I don t think the LWN engine has
this shutters. I m I wrong on this? Had shutters on my 76, and 82 Cummins powered Kenworths. Eventually the nylon slat mounts wear out, or the
uninitiated mechanic try s to lift the rad out using the open slats to grip on. They where air operated by a sensor installed in the lower rad connection. They where set to open about 5 degrees before the coolant thermostat opened. Even refrigeration units mounted on the front of
reefer trailers had them in the old days.
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I remember reading about the shutter feature in the sales brochure when I bought my 2017 Canyon Duramax, but I don t think the LWN engine has
this shutters. I m I wrong on this? Had shutters on my 76, and 82 Cummins powered Kenworths. Eventually the nylon slat mounts wear out, or the
uninitiated mechanic try s to lift the rad out using the open slats to grip on. They where air operated by a sensor installed in the lower rad connection. They where set to open about 5 degrees before the coolant thermostat opened. Even refrigeration units mounted on the front of
reefer trailers had them in the old days.
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Lord
I agree they are engineered for ease of assembly not disassembly. BTW-I think the issue with service data having you remove that support block unnecessarily, is because they use assembly instructions to create service instructions. That support would have to be installed before the trim piece in the factory. Perhaps if you disturb any of the fasteners they just include the previous installation instruction but reversed to remove instead of install.
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I agree they are engineered for ease of assembly not disassembly. BTW-I think the issue with service data having you remove that support block unnecessarily, is because they use assembly instructions to create service instructions. That support would have to be installed before the trim piece in the factory. Perhaps if you disturb any of the fasteners they just include the previous installation instruction but reversed to remove instead of install.
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Gary
Chevy nah. Well maybe now. I owned a 3. 8 L, 05 impala LS, indigo blue. Bought it with 9200 miles. Not one problem except two blower motors. Had it 15 yrs. Id still driving it but the rust belt in N. H. killed it bad. 190000 miles and still used very little oil. Proper maintenence works. Now im purly a toyota/lexus guy. Wife has the avalon. Thanks for the tip on krown undercarriage tip. Going up to Claremont N. H. this spring.
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Chevy nah. Well maybe now. I owned a 3. 8 L, 05 impala LS, indigo blue. Bought it with 9200 miles. Not one problem except two blower motors. Had it 15 yrs. Id still driving it but the rust belt in N. H. killed it bad. 190000 miles and still used very little oil. Proper maintenence works. Now im purly a toyota/lexus guy. Wife has the avalon. Thanks for the tip on krown undercarriage tip. Going up to Claremont N. H. this spring.
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Frank
I remember the day Volvo had roll-up shades that worked via a cable in the cab. My, my, we've come a long way. Listened to a podcast today about a 2017 Subaru that had similar issue - shades stopped working. Shut down several systems - lane departure, pre-emptive braking and the auto idle stop system - and lit the dash up like a Christmas tree. One step forward and two in reverse.
Another great video. Keep'm coming.
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I remember the day Volvo had roll-up shades that worked via a cable in the cab. My, my, we've come a long way. Listened to a podcast today about a 2017 Subaru that had similar issue - shades stopped working. Shut down several systems - lane departure, pre-emptive braking and the auto idle stop system - and lit the dash up like a Christmas tree. One step forward and two in reverse.
Another great video. Keep'm coming.
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Russ
Soooo. GM bought Monogram Plastic Model stock (the snap together division) combined with plastic Venetian blinds (molded by Monogram) and was thinking 'How can we utilize these to make something to fit our vehicles AND bury them with little access for removal? '. 'OH, and make sure to use enough actual threaded fasteners to make the part at least give the illusion it could survive a direct hit from a moose'. SMH.
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Soooo. GM bought Monogram Plastic Model stock (the snap together division) combined with plastic Venetian blinds (molded by Monogram) and was thinking 'How can we utilize these to make something to fit our vehicles AND bury them with little access for removal? '. 'OH, and make sure to use enough actual threaded fasteners to make the part at least give the illusion it could survive a direct hit from a moose'. SMH.
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Ervin
I don't usually leave comments. But this one had too. Welcome to the future it's not like the past year's 50 60 70 80 in 1990 is when they started to change. People does not understand the labor cost now days. Look at the crap you have to do to get to one part. The past simple easy. Wait until you have to work on electric our age we might be gone by then. But feel sorry for our kids in the future.
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I don't usually leave comments. But this one had too. Welcome to the future it's not like the past year's 50 60 70 80 in 1990 is when they started to change. People does not understand the labor cost now days. Look at the crap you have to do to get to one part. The past simple easy. Wait until you have to work on electric our age we might be gone by then. But feel sorry for our kids in the future.
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John
I have a friend that works for a snow plow company in Canada. I takes them 6. 5 hours to remove the front grill, finders, rad, headlights just to install the plow frame and wire harness on a f350 ( 2022 model ). Then create fit / customize reassemble. They don't build them to add stuff or repair.
sorry, this is how mechanics make money They come off good in a crash!
what a pain
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I have a friend that works for a snow plow company in Canada. I takes them 6. 5 hours to remove the front grill, finders, rad, headlights just to install the plow frame and wire harness on a f350 ( 2022 model ). Then create fit / customize reassemble. They don't build them to add stuff or repair.
sorry, this is how mechanics make money They come off good in a crash!
what a pain
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Indentured
Funny, every time I swap the shutters I have to pick up a ton of the plastic fins.
They make quite the mess when you forget you have a steering wheel in your hands.
Just one more thing to break, and one more for the manufacturer to sell when it does.
Now if we could only have our parts NOT manufactured overseas only to be on national backorder with no release date.
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Funny, every time I swap the shutters I have to pick up a ton of the plastic fins.
They make quite the mess when you forget you have a steering wheel in your hands.
Just one more thing to break, and one more for the manufacturer to sell when it does.
Now if we could only have our parts NOT manufactured overseas only to be on national backorder with no release date.
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randy
when i was younger i had a 1972 ford pinto and acording to the ford repair manual it said it would take 4 hrs to change the starter and it said you have to unbolt the steering to change the starter. i figured it out that i could pull the starter go get the new one and be back on the road in 45 min. the way i did it was reove the battery and battery box and get it that way.
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when i was younger i had a 1972 ford pinto and acording to the ford repair manual it said it would take 4 hrs to change the starter and it said you have to unbolt the steering to change the starter. i figured it out that i could pull the starter go get the new one and be back on the road in 45 min. the way i did it was reove the battery and battery box and get it that way.
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Rohan
I have fixed plenty of laptop computers - they give you plenty of mini heart attack moments when separating plastic casings. Some are a lot louder than you would think. As well as looking for screws in weird places, plus the plastic clips are a lot smaller and easier to break and you can t just go to a store and buy parts to replace them apart from the mothership.
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I have fixed plenty of laptop computers - they give you plenty of mini heart attack moments when separating plastic casings. Some are a lot louder than you would think. As well as looking for screws in weird places, plus the plastic clips are a lot smaller and easier to break and you can t just go to a store and buy parts to replace them apart from the mothership.
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Mike
Back in the good old days you stuck a piece of cardboard in front of the radiator if you wanted better heat in the winter. Guess that's considered an inactive grill shutter. Hate to imagine how much that monstrosity cost to replace. Oh well. progress.
Thanks GM for putting food on the table, land under the feet, and money in the bank for Eric O's family!
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Back in the good old days you stuck a piece of cardboard in front of the radiator if you wanted better heat in the winter. Guess that's considered an inactive grill shutter. Hate to imagine how much that monstrosity cost to replace. Oh well. progress.
Thanks GM for putting food on the table, land under the feet, and money in the bank for Eric O's family!
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Bob
The bumper filler is easier to release bottom tabs by reaching up from below behind the bumper and pull down on the tabs. I had a 39 Packard with active grille shutters. They had a thermal spring in the top of the radiator with a rod going to shutter. The car was 40 years old when I got it and it still worked great. Now we need a computer to do it, Progress?
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The bumper filler is easier to release bottom tabs by reaching up from below behind the bumper and pull down on the tabs. I had a 39 Packard with active grille shutters. They had a thermal spring in the top of the radiator with a rod going to shutter. The car was 40 years old when I got it and it still worked great. Now we need a computer to do it, Progress?
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