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Thread: 4WD or AWD?
02-02-2012, 09:51 AM #21
Great info Bill
That info should clear things up for many
To better understand how your own truck works, you have to know what you have
Taking what Bill posted, look in your glove? or visor? other? for your RPO decal and look for the above posted RPO codes
NR3 = BW4481 etc
NR4 = BW4484 etc
NP1/NP2/NP3 etc etc >> if not found you can run a RPO "lookup" site
FYI, as I didn't see it mentioned
The use of the Stabilitrak button temporarily deletes the ' engine torque managment' allowing the wheels to spin more freely in situations where you need to 'rock the vehicle' or heavy 4WD is needed as to not have reduced power be an issue.
02-02-2012, 04:06 PM #22
- Join Date
- Nov 2008
- Endicott, NY
The center button represents the normal mode that most people use. The vehicle is in 4 Hi and Stability/TC are active. The vehicle behaves quite well in this mode and the EBCM does a great job of controlling engine torque and brake application to yaw the vehicle or to transfer power from the wheel that doesn't have traction to one that does. Normally in a 4 wheel drive vehicle that has a differential style transfer case without a limited slip diff or traction control all it takes is for one wheel to lose traction and the vehicle can't move. I get around in deep snow on steep hills just fine.
The bottom button is 4 Lo and in this mode Stability Control and TC are also turned off. I have used this a few times when I have had the truck off road and wanted the extra pulling power and the slow speed that comes from being in such a low gear. It comes in great when pulling my car trailer out of its shed when the ground is wet. In 4 Hi the wheels will spin just a bit before TC clamps them down thus leaving 4 spin marks in my grass. In 4 Lo with the engine idling all I have to do is take my foot off the brake and the truck just moves at a very slow pace without spinning the tires.
02-02-2012, 05:37 PM #23
Sorry, When I said "your own truck", I was not refering to you, just generalizing
I run a BW4481 in a Denali, which is the 1 speed, all mechanical, open diff type.....very smoooootthhh
10-11-2012, 12:54 PM #24
- Join Date
- Dec 2004
- Arlington, Texas, United States
- Blog Entries
I need to read through this thread! Good stuff guys.
10 Chevy Traverse LT AWD
02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
99 Chevy Cavalier LS (105K+ miles - commuter car)
78 Chevy Suburban Silverado (454, 3/4 ton)
62 GMC 3/4 ton Pickup (350 police interceptor)
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