1986 Chevrolet 4X4 Insta-Trac Manufacturer Promo

The patented Insta-Trac system was standard on all four-wheel-drive Compact S-series, and fullsize C/K Pickup models. Insta-Trac made it easy to shift into and out of four-wheel drive without leaving the cab.

• “On-the-fly” shifting from 2WD to 4WD HI and back at any speed is possible with the Insta-Trac system (vehicle must be stopped to shift into 4-LO). The system also includes a 4WD Low gear for more demanding 4WD maneuvers, such as climbing steep grades or driving through deep snow or mud.

• Electronic shift transfer case was available on K1500 and K2500 models. This version of Insta-Trac has all the features mentioned above, but makes shifting from 2WD to 4WD High and back again as easy as pushing a button located on the instrument panel. The base Insta-Trac system uses a manual lever to switch in and out of four-wheel drive.

Source: GM