how to change settings from 2 wheel to 4 wheel

Asked by Jan 22, 2014 at 03:01 PM about the GMC Envoy

Question type: General

4 Answers

6,835

Their should be a knob on the dashboard that says "2H, 4H, N, 4L". Stop the vehicle and move the knob from "2H" to "4H" and now you should be in 4H which will allow you to do highway speeds in "4x4" mode and when you go to "dry pavement" switch back to "2H" so you don't ruin the transmission. Does this vehicle have AWD ? If there is an emblem that says "AWD" on the back tailgate or on the dashboard somewhere, then you can not shift into any "4x4" modes. The transmission and center electronic coupling will tell itself when it "does" or "does not" need AWD with out your input at all.

5 out of 5 people think this is helpful.
6,835

"AWD" - All Wheel Drive, good for speeds from 0 - 80+, "2H" - good for speeds from 0-80+, "N" - Neutral, "4L" - good only for speeds up to 30 mph but will go thru almost anything.

1 out of 1 people think this is helpful.
160

I have a GMC Envoy, with a knob that says the following, "2w, auto, 4↑, 4↓, & when you put it on Auto it feels like something is hitting, but drives good in 2w

16 out of 16 people think this is helpful.

Why does the 4x4switch liight blinkwhen I turn it into 4L or 4H?

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