GM HD Trucks Many with AWD instead of 4WD
Where snow and mud isn't an issue, you can have a 4X2 truck as your tow vehicle, but here in the Northeast, 4X4 trucks are the norm. Now GM is offering AWD instead of 4WD in many of their HD trucks. A...
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My 2001 Suburban had both...AWD was called 4WD "auto" with a viscous clutch that engaged the fronts based on wheel slip as needed, you could also select real 4WD and 4 LO range. So including the neutral position, you had 5 choices on the t-case selector.
