Why is my Chevy Blazer not shifting into 4 wheel drive?
Why is my Chevy Blazer not shifting into 4 wheel drive? 44 people found this helpful. sounds like a bad acuwater,locaded under battery tray,is a round plunger like deal has a rubber diaphram.replace this your 4x4 should work 40 bucks at chevy dealer. 32 people found this helpful. Why is my 4x4 not working at all? When it came time to leave for the day, 4hi was no longer working. The only thing I can think of is that the metal plate inside the diaphragm has weakened and it will continue to bend. So I am going to get a...