Service 4wd 99 blazer


blazi99c
12-01-2009, 11:10 AM
Hello
My brother push my car Without runs engine whit gear N. SERVICE 4WD light come on.
Now i have 4hi, if I want change to 2hi, I press Switch 2hi He blinks Nothing happens, Some switch only can be heard not mechanicall only electricall.

Please help.

MT-2500
12-01-2009, 11:15 AM
Hello
My brother push my car Without runs engine whit gear N. SERVICE 4WD light come on.
Now i have 4hi, if I want change to 2hi, I press Switch 2hi He blinks Nothing happens, Some switch only can be heard not mechanicall only electricall.

Please help.
How far was the push?
Have you tryed a reset on it by pulling 4W fuse?
Have you tryed putting transmissionin neutral or backing up and rooling forward a little?

What transfer case does it have

blazi99c
12-01-2009, 05:46 PM
1. he say 2meters
2. yes Nothing happens
3. It will try today
4.np 236

MT-2500
12-01-2009, 06:22 PM
1. he say 2meters
2. yes Nothing happens
3. It will try today
4.np 236
Have you tryed to reset it by pulling fuse?
The 236 transfer case can be tested and checked out and code read out with a engine/transmission/transfer case capable scanner.
Post back any codes you get.

Let us know how it goes.

MT-2500
12-01-2009, 06:32 PM
How many miles on it?
Has transfer case ever been serviced?

blazi99c
12-01-2009, 06:42 PM
yes i pulling fuse and Nothing happens
As I can check it 236 ?
Today i go to garage , I unhave Tech2 scaner.
Only normal OBD-II with ScanXL™ Professional + GM

blazi99c
12-01-2009, 06:48 PM
i have 175000 km
I have bought my car 1 year ago and I unknow if anybody or somebody served him.

PS i living in Poland And I unknow specialists from this service of type of equipment here.

MT-2500
12-01-2009, 07:10 PM
i have 175000 km
I have bought my car 1 year ago and I unknow if anybody or somebody served him.

PS i living in Poland And I unknow specialists from this service of type of equipment here.

Not much you can do without the transfer capable scanner.
Check around for a repair shop that has one.
Let us know how it goes.
Good Luck

MT-2500
12-01-2009, 07:24 PM
If no capable scanner can be found.
Always check all fuses and wiring.

A factory repair manual or a All Data online sub has a lot of circuit and voltage checks and switch test you can run on switch and transfer case control module and encoder motor and a pin out voltage check on module.

http://www.alldata.com/products/diy/index.html

Good Luck and let us know how it goes.

blazi99c
12-02-2009, 07:29 AM
code i get c0323 and c0387 .
I have disconnected all wires and there is Clean with special spray.
I connected back and get code c0323 and c0310.

MT-2500
12-02-2009, 09:46 AM
Good find on the codes.
There is you problem.
Did you get them with a OBD11 scanner or a transfer case scanner?

323 is a code for transfer case lock solenoid circuit.

387 is no shift code.

Code 310 is a shift motor circuit open or bad shift motor.

323 and 310 are both circuit problems.

Make sure you check all wiring and power feeds and grounds.

Get the repair flow chart for them codes and go threw the repair flow charts.
Check all wiring circuits and power feeds and do not forget grounds.

Factory repair manual or a A -All Data online sub will have the repair flow charts and take you threw the repair.
http://www.alldata.com/products/diy/index.html

Let us know how it goes.
Good luck

blazi99c
12-05-2009, 12:02 PM
I have given other shift motor and its ok.

It thanks for interest my problem

MT-2500
12-05-2009, 12:09 PM
I have given other shift motor and its ok.

It thanks for interest my problem

You are welcome and thanks for posting back how it went and the fix.

Good Luck

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