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Discussion Starter #1
This is a slightly revised version of a post I made a week ago in the drivetrain forum.

This is all about my 97.

1. The front is open diff right?

2. The transfer case actuator. Is that for HI/LO?

3. I read somewhere that if I install a switched relay on the front actuator, I could in turn have a 2LO. Is that true?

4. I just replaced the front diff actuator with an OEM style from JC Whitney, the thermal style. As far as I can tell the only advantage to upgrading to the newer style is faster 4x4 engagement and durability, correct?

5. Is the transfer case actuator a thermal as well or some completely different design?
 

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AFIK all GM front differentials used with IFS are open.

The T-case motor should do all the shifting IIRC if yours is pushbutton 4wd. If you have a shift lever, I don't know what a motor would do.

Yes, but the front driveshaft will still spin when in a 4wd range.

Yes, and less sensitivity to outside temperature.

The transfer case motor (Encoder motor is the correct term I believe) is completely electric if equipped.
 

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Discussion Starter #3
yeah its push button.

So the encoder motor (rhymes, awesome), is HI/LO is the case.

and thx, that was quick.
 
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