Your truck has a real 4WD system meaning you DO NOT want to use 4WD on pavement. It will bind up and if enough traction is available, something will break. Use it only in low traction situations.FS552 said:Can you all tell me the when is the best time to use 4HI, 4LO.
Yes, GM has named their push button 4WD system "Autotrac"Also is the Auto 4WD drive the same thing as the auto track you all were mentioning earlier?
Unlike other brands, 4Hi can be engaged at any speed. I've engaged mine doing 70mph after encountering snow and ice in the mountains of New Mexico.Oh and should I stop before I engage in either 4hi or 4lo? Or can I just push the button while i'm driving. If not, well I already did it once LOL.
4Lo can be engaged at speeds under 3mph. As others have mentioned, it is probably easier on the transfer case if you stop, put the transmission shifter in neutral, then put in 4Lo.
The best part! Normally the transfer case enters 4WD followed by the front axle engaging. Auto 4WD, engages the front axle first and in milliseconds uses clutches to engage the output of the transfer case if a speed difference is encountered between the front and rear wheels. You can drive in Auto 4WD on any surface at the penalty of slightly diminished fuel economy. It really shines when road conditions are changing like rain, snow and ice.and Auto 4WD