4wd will not engage

Asked by Dec 05, 2007 at 05:49 PM about the 1998 Chevrolet Blazer

Question type: Maintenance & Repair

In a snowstorm yesterday, when I pushed the 4wd Hi button it went on for a second and then flashed back to 2wd and the 4 wheel would not engage.  4 wheel Low worked but not 4wd Hi.
What's the deal?

2 Answers

sounds like problem with mine,under hood remove battery and battery tray,you will see a diaphram with a cable going straigh up through it,check rubber on diaphram if cracked or torn replace 4x4 will work again these vehicles work off of cable,ps dealer part only. about 40 bucks.

2 people found this helpful.
47,685

Agreed, it's probably a diaphragm problem, this is 90% of the issue with these 4WD setups.

1 people found this helpful.

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