Great video. Here in Colorado we had solid ice streets, in 4Hi with traction control I was spinning out on slightly uphill road with stock tires (2023 Silverado LTZ Z71). But using Off-Road mode, it seemed to detune the throttle and made my starts much softer and allowed me to have much more traction from a start.
My 99 2500 Silverado has this and its what i use in any snow conditions. Its 25 years old, and ive has it 7+ years with no issues. 23 mile drive to work when it snows and its all good every time!!
The G80 is great. But the electric locker is great. Also i drive a 18 wheeler that has a differential locker for traction witch is nice. The only flaw of an electric or air control locker is if theres a air leak of electrical malfunction your ass well stay stuck. So the G80 is better just because it works on its own. Good video nice truck👍🇺🇸🇺🇸🇺🇸
Just an FYI, don't leave it in 4x4 auto all the time. It engages the transfer cases 4x4 mode but just disconnects the front differential. It adds wear and tear to the transfer case and hurts fuel economy. And if your truck is older like mine the front differential might not actually disengage like it's supposed to. Actually had that happen today. I was in 4x4 Auto and making a sharp turn in a parking lot and the trucks drive line was bound up hoping around like it was fully engaged in 4x4 mode but it shouldn't have been.
Under certain circumstances, like continuous tight turning, it may engage because the system is detecting a speed differential between the front and rear wheels advancing at different rates through the turn. Generally the parasitic loss of having it engaged full time is under 5% fuel usage. And slightly more fuel used when it is actively splitting torque to the front. I don’t recommend leaving it on full time. But if you’re driving in snowy conditions that change from plowed street to snow or slush streets, there is no need to disengage. Driving in 4auto on a sunny summer day however there is no need to have it selected
My 2007 Suburban 2500 has this issue where I turn the switch to 4-Auto and the 4-Auto light comes on. After a while, and without moving the switch, the 4H light comes on and stays on until I switch it back to 2H. Is that normal?
I got same exact one mine is pearl white with chrome z60 package its all stock. It does great in Colorado Snowy Mountains and snowy off roads and I use 4wd auto option alot. Loving the truck, defiantly big upgrade from FWD Acura. Hey have you tired E85 in it?
@@andrewsbbq I don't want to try just yet because of the below freezing temperatures, but i will fuel it up in few days as it gets warm though. Fuel is expensive in your area. it costs me 75$ for a full tank of 87 here in Colorado
@@andrewsbbq Just ran ethanol, it cost same as 85 Regular. Ethanol burns fast although cleaner and Greta with her environmental friends will appreciate us for fueling it up with it. Wish Ethanol be more popular and be at least 1$ cheaper then regular good fuel that has great potential. Do you have also Drum breaks in the rear?
The Auto 4x4 works on a clutch system inside the transfer case. It engages only when the computer detects a speed differential between the front and rear tires. There then should be no reason for the computer to engage the cluthes when driving on asphalt. In essence, it becomes an AWD vehicle.
@@hmata3 Question- I have just purchased a 2012 Silverado with 4x4 and it has auto 4x4. Is it safe for the transmission and 4x4 workings to drive say 75 mph with the auto on? Would it be strenuous for the transfer case and transmission? just wondering.
@@rome79735 The owner's manual gives a speed limitation of 45 mph for 4L only. For the other settings, it indicates that premature wear may occur when improperly used on dry surfaces. I have read on other forums that some have left their Auto 4x4 mode enabled since the day they purchased the vehicle with no apparent issues. I have gone up to 55 mph on Auto 4x4 myself and did not experience anything out of the ordinary. Mechanically, the truck would be able to detect high resistive forces and disengage the clutches when it needs to, even at 75 mph. At this point, it would behave as an AWD vehicle. Keep in mind that the clutches are rotating at the same relative speed even at 75 mph on 2H. For such high speeds, I would inch my way up, starting at 50 and increasing by 5 mph to see how the truck behaves to understand its limitations.
Can you hear that the front is engaged when it’s in 4-auto. I have a 2011 z71 and i can tell it’s in, uses more gas and i hear a little bit of a whine. That sound normal?
@@tipsreviews7476 make sure proper fluids are used in the front axle and transfer case. My transfer case call for automatic trans fluid, but older model transfer cases used AC Delco AutoTrak fluid. Even some dealer service centers get this confused. NP and Borg Warner made the transfer cases before about 2007. NP were good, BW were shit. GM then switched to Magna Power which seem to be pretty damn bulletproof
Its a BakFlip. Model is FiberMax. Mine is 8 years old and is really good, but they have made them great. New ones have better tailgate seals, WAY lighter, and the warranty is great. I shopped around and I think the BakFlip eBay store ended up being the cheapest. The flush tonneau cover is definitely the way to go.
The auto four-wheel-drive always scares me, it just doesn’t make sense you give it power and then it slams in the front wheel drive under power? It seems like it’s just asking to break something. I’ve had it on my vehicles for 21 years and after trying the first time, I never tried it again. It just doesn’t make sense to me, if you’re stopped because your back wheels are stuck and you’re an auto giving it power and then engage the four-wheel-drive. It just seems crazy and dangerous for all your front end parts plus your transfer case.
It doesn’t slam in, it uses viscous couplings/clutches to ease into the torque transfer, the more slip in the rear the more power goes to the front. Nothing slams. Every 4x4 truck and SUV from GM comes standard with 4auto now. Even the HD trucks get it with 1000lbft Duramax
Thanx I've had my truck 4 a couple of years! It's like yours ? This helps alot I'm going 2 keep it auto 4 the winter & put it in 2high,once the weather is nice. O e O YAHUWAH O e O YAHUWSHUAH bamm Halleluyah olah. In
@@andrewsbbq stabilitrak grabs the brak to control the vehicle I know that. Toyota's rear traction device is the brakes.. it grabs the break of the free wheeling tire I think that's how GM's work in the front when you're in auto...
@@philllsxga.7737 Incorrect. The transfer case sends torque to the front axle when slip is detected in the rear You can read about its operation here www.google.com/url?sa=t&source=web&rct=j&url=www.evopower.ca/mrws/filedriver/MP3023_and_3024_Operation.pdf&ved=2ahUKEwixh6bzgKT2AhUC6RoKHcajAx4QFnoECAYQAQ&sqi=2&usg=AOvVaw2vlnUSsUJsCK0QaVZqlEwV
@Chris montgomery I have a Silverado z-71 4x4 also, I just purchased a 2012 and it too has auto 4x4. Can one drive 75 mph (On the freeway) with the 4x4 auto on? Would it mess things up with the truck?
Millions and millions of trucks have it and work perfectly fine for hundreds of thousands of miles. As of 2019 4auto is standard on all GM 4x4 trucks, and is also on the HDs now too. Sort of speaks for itself, where as you only speak for yourself, correct?
I agree, I’ve had it in two of my trucks, and when you’re driving in the snow when your driveway and your back wheel start spinning your engine revs up and then it slams the front end in the drive, while your engines under power and revved up, it seems crazy to me like you’re asking to blow something out. After the first time doing that, I’ve never used it again, engaging gears with your engine, revved up and under power seems crazy to me.
@@ShaneZettelmier lol it doesn’t slam bud. Did anything slam in the video? If you’re getting a slamming you’ve destroyed your front end long before you tried using 4auto
Great video. Here in Colorado we had solid ice streets, in 4Hi with traction control I was spinning out on slightly uphill road with stock tires (2023 Silverado LTZ Z71). But using Off-Road mode, it seemed to detune the throttle and made my starts much softer and allowed me to have much more traction from a start.
My 99 2500 Silverado has this and its what i use in any snow conditions. Its 25 years old, and ive has it 7+ years with no issues. 23 mile drive to work when it snows and its all good every time!!
Hey how to check transmission fluid wend not have dipstick
The G80 is great. But the electric locker is great. Also i drive a 18 wheeler that has a differential locker for traction witch is nice. The only flaw of an electric or air control locker is if theres a air leak of electrical malfunction your ass well stay stuck. So the G80 is better just because it works on its own. Good video nice truck👍🇺🇸🇺🇸🇺🇸
Just an FYI, don't leave it in 4x4 auto all the time. It engages the transfer cases 4x4 mode but just disconnects the front differential. It adds wear and tear to the transfer case and hurts fuel economy. And if your truck is older like mine the front differential might not actually disengage like it's supposed to. Actually had that happen today. I was in 4x4 Auto and making a sharp turn in a parking lot and the trucks drive line was bound up hoping around like it was fully engaged in 4x4 mode but it shouldn't have been.
Under certain circumstances, like continuous tight turning, it may engage because the system is detecting a speed differential between the front and rear wheels advancing at different rates through the turn.
Generally the parasitic loss of having it engaged full time is under 5% fuel usage. And slightly more fuel used when it is actively splitting torque to the front.
I don’t recommend leaving it on full time. But if you’re driving in snowy conditions that change from plowed street to snow or slush streets, there is no need to disengage. Driving in 4auto on a sunny summer day however there is no need to have it selected
My 2007 Suburban 2500 has this issue where I turn the switch to 4-Auto and the 4-Auto light comes on. After a while, and without moving the switch, the 4H light comes on and stays on until I switch it back to 2H. Is that normal?
I got same exact one mine is pearl white with chrome z60 package its all stock. It does great in Colorado Snowy Mountains and snowy off roads and I use 4wd auto option alot. Loving the truck, defiantly big upgrade from FWD Acura. Hey have you tired E85 in it?
@@andrewsbbq I don't want to try just yet because of the below freezing temperatures, but i will fuel it up in few days as it gets warm though. Fuel is expensive in your area. it costs me 75$ for a full tank of 87 here in Colorado
@@andrewsbbq Just ran ethanol, it cost same as 85 Regular. Ethanol burns fast although cleaner and Greta with her environmental friends will appreciate us for fueling it up with it. Wish Ethanol be more popular and be at least 1$ cheaper then regular good fuel that has great potential. Do you have also Drum breaks in the rear?
Whereabouts in KW was that?
Great video! Where can I find this trail? I am in ontario as well
Good ol transmission line.
I’ve heard it’s bad for the transmission to keep it in 4auto on dry asphalt. Not 💯 sure why but someone at the Forbes dealership told me.
The Auto 4x4 works on a clutch system inside the transfer case. It engages only when the computer detects a speed differential between the front and rear tires. There then should be no reason for the computer to engage the cluthes when driving on asphalt. In essence, it becomes an AWD vehicle.
@@hmata3 Question- I have just purchased a 2012 Silverado with 4x4 and it has auto 4x4. Is it safe for the transmission and 4x4 workings to drive say 75 mph with the auto on? Would it be strenuous for the transfer case and transmission? just wondering.
@@rome79735 The owner's manual gives a speed limitation of 45 mph for 4L only. For the other settings, it indicates that premature wear may occur when improperly used on dry surfaces.
I have read on other forums that some have left their Auto 4x4 mode enabled since the day they purchased the vehicle with no apparent issues. I have gone up to 55 mph on Auto 4x4 myself and did not experience anything out of the ordinary.
Mechanically, the truck would be able to detect high resistive forces and disengage the clutches when it needs to, even at 75 mph. At this point, it would behave as an AWD vehicle. Keep in mind that the clutches are rotating at the same relative speed even at 75 mph on 2H.
For such high speeds, I would inch my way up, starting at 50 and increasing by 5 mph to see how the truck behaves to understand its limitations.
Can you hear that the front is engaged when it’s in 4-auto. I have a 2011 z71 and i can tell it’s in, uses more gas and i hear a little bit of a whine. That sound normal?
Did you figure it out?
@@tipsreviews7476 Never figured it out
@@ep6606 did the noise stop? Mine has a whine noise when in 4auto.
@@tipsreviews7476 i don’t have the truck anymore but it did it in 4 high
@@tipsreviews7476 make sure proper fluids are used in the front axle and transfer case. My transfer case call for automatic trans fluid, but older model transfer cases used AC Delco AutoTrak fluid. Even some dealer service centers get this confused. NP and Borg Warner made the transfer cases before about 2007. NP were good, BW were shit. GM then switched to Magna Power which seem to be pretty damn bulletproof
I have seen worse sheets of ice. I know I drove on one and when I said drive on it I mean I slid off the road and went through a farmer's field.
where did you purchase your bed cover???🤭🤭
Its a BakFlip. Model is FiberMax. Mine is 8 years old and is really good, but they have made them great. New ones have better tailgate seals, WAY lighter, and the warranty is great.
I shopped around and I think the BakFlip eBay store ended up being the cheapest.
The flush tonneau cover is definitely the way to go.
4 auto is so awesome. Had it in my old 99, but dont have it in my newer truck. Wish I still had it
4 auto is terrible for the truck
@@jeremiah_5832 no it's not 👍
@@jeremiah_5832 Please explain, thanks.
The auto four-wheel-drive always scares me, it just doesn’t make sense you give it power and then it slams in the front wheel drive under power? It seems like it’s just asking to break something. I’ve had it on my vehicles for 21 years and after trying the first time, I never tried it again. It just doesn’t make sense to me, if you’re stopped because your back wheels are stuck and you’re an auto giving it power and then engage the four-wheel-drive. It just seems crazy and dangerous for all your front end parts plus your transfer case.
It doesn’t slam in, it uses viscous couplings/clutches to ease into the torque transfer, the more slip in the rear the more power goes to the front. Nothing slams.
Every 4x4 truck and SUV from GM comes standard with 4auto now. Even the HD trucks get it with 1000lbft Duramax
Thanx I've had my truck 4 a couple of years! It's like yours ? This helps alot I'm going 2 keep it auto 4 the winter & put it in 2high,once the weather is nice. O e O YAHUWAH O e O YAHUWSHUAH bamm Halleluyah olah. In
I think in auto the front brakes are the traction device..
@@andrewsbbq stabilitrak grabs the brak to control the vehicle I know that.
Toyota's rear traction device is the brakes.. it grabs the break of the free wheeling tire I think that's how GM's work in the front when you're in auto...
@@philllsxga.7737 Incorrect. The transfer case sends torque to the front axle when slip is detected in the rear
You can read about its operation here www.google.com/url?sa=t&source=web&rct=j&url=www.evopower.ca/mrws/filedriver/MP3023_and_3024_Operation.pdf&ved=2ahUKEwixh6bzgKT2AhUC6RoKHcajAx4QFnoECAYQAQ&sqi=2&usg=AOvVaw2vlnUSsUJsCK0QaVZqlEwV
Yeah 😂 because 4auto is great to use and it's good for the vehicle! You believe this you aren't a bright person 😂😂😂
@Chris montgomery I have a Silverado z-71 4x4 also, I just purchased a 2012 and it too has auto 4x4. Can one drive 75 mph (On the freeway) with the 4x4 auto on? Would it mess things up with the truck?
@@rome79735 you're fine to drive on freeway in 4Auto
Millions and millions of trucks have it and work perfectly fine for hundreds of thousands of miles. As of 2019 4auto is standard on all GM 4x4 trucks, and is also on the HDs now too. Sort of speaks for itself, where as you only speak for yourself, correct?
I agree, I’ve had it in two of my trucks, and when you’re driving in the snow when your driveway and your back wheel start spinning your engine revs up and then it slams the front end in the drive, while your engines under power and revved up, it seems crazy to me like you’re asking to blow something out. After the first time doing that, I’ve never used it again, engaging gears with your engine, revved up and under power seems crazy to me.
@@ShaneZettelmier lol it doesn’t slam bud. Did anything slam in the video? If you’re getting a slamming you’ve destroyed your front end long before you tried using 4auto