2000 blazer wont go into 4x4


Asked by Dec 22, 2010 at 10:44 PM about the 2000 Chevrolet Blazer

Question type: Maintenance & Repair

i have a 2000 chevy blazer 4x4, and it wont go into 4hi, and
only sometimes it will go into 4lo. when i push the button,
the light just flashes.

4 Answers


When shifting into certain gears certain things are required, ie for 4lo u must be travelling under 5km per hour and in neutral. this varies with manufacturer but is used to prevent damage. if u know this then forget what i just said. There is a motor on the side of the transfer case which changes the range in which your truck is in, and if not used for a while, it will seize up. it soulds like this has happened you yours if it is indeed the one im thinking of. easy to test. have someone push the button while u listen. make sure u block your tires, and do a quick check for power at the connector with a test light. hope this helps

3 of 3 people found this helpful.

your truck works on a vacuum system check on the fire wall toward to center driver side of the truck. you will see a little black box with vacuum lines that box switches the transfer case.....

7 of 7 people found this helpful.

oh it is under the hood sorry for not listing that before also just make sure vacuum lines have not cracked or pulled off..

3 of 3 people found this helpful.

If it is the S10 blazer then the problem is probably your TCM. I have the same issue from time to time. Easiest fix is to disconeect battery for 10 mins. Then reconnect. This seems to reset the computer and all is good for a while.

2 of 2 people found this helpful.

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