4wd problem

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#11

11-23-2017, 05:02 AM

Nixoncc

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Join Date: Aug 2017

Posts: 16

Quote:

Originally Posted by error_401

2005 Dakota manual for NV233 electrically actuated reads:

4HI to 4LO or 4LO to 4HI
NOTE: When shifting into or out of 4LO some gear
noise may be heard. This noise is normal and is not
detrimental to the vehicle or occupants.
Shifting can be performed with the vehicle rolling 2-3
mph (3-5 km/h) or completely stopped.

The 1991 - 1994 with the electric NV233 with dash electrical switch are the same.

BTW:
Switching the HI-LO range should be accomplished only with the transmission in NEUTRAL.

TCCM will sense it and flash or do nothing.

The thing is that I can hear the 4lo tries to engage but then returns to the 4hi in a few seconds.
This is in neutral

#12

11-24-2017, 04:30 AM

error_401

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Join Date: Nov 2007

Location: Zurich

Posts: 2,118

BTW

Can you give us the vehicle information?

Year, Make, Model, still not sure about which Blazer we are talking.

#13

11-24-2017, 06:42 AM

Nixoncc

Beginning Member

Thread Starter

Join Date: Aug 2017

Posts: 16

Quote:

Originally Posted by error_401

BTW

Can you give us the vehicle information?

Year, Make, Model, still not sure about which Blazer we are talking.

Sure!
It's a 99 Blazer LT

#14

11-24-2017, 08:31 AM

LesMyer

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Join Date: Oct 2014

Location: North Central Indiana

Posts: 4,073

Quote:

Originally Posted by Nixoncc

Sure!
It's a 99 Blazer LT

As I described is the preferred method for either NP233 or NP236. Also included here is a tip if it is a NP233 (3-button) and won't go into 4lo.

https://cdn.dealereprocess.net/cdn/s...001-blazer.pdf

I'm done

Last edited by LesMyer; 11-24-2017 at 08:46 AM.