I've been heavily hitting the search button here for 2 or 3 days now trying to outfit myself with some knowledge to help with a problem I'm having with the Blazer. Who knows how many threads I've been reading in (lots!), and I did get some blanks filled in which was nice, but wound up with some new questions as well that I have yet to find a clear answer on.

One question is what is and/or how do I tell the difference between the NP & NV236? I searched both, but didn't quite find the answer. I'm trying to figure out for sure which one I have.

'01 S10 TrailBlazer - RPO is NP8, 4-button shift control switch.
I will have a few more questions, but right now I have to go out and check a couple more things I came upon in searching, so I shall return. Thanks in advance!

 

NV236 == NP236. They are the same thing. The company name changed 2004 when the company was sold to Magna International (originally it was a joint venture between Chrysler Corp and General Motors).

 

Ah, thank you sir!
Onto my 2nd quick question that I wasn't quite clear on the answer to in reading through searches, involving my shift control switch.

I did come acorss various replies (by yourself) with information on how to check the swtich. What I'm unclear on is, even if I'm able to get all the switch lights to light up, or at least flash in my case without staying on (the little indicators the TCCM reads), is it possible the switch could still be faulty in some manor, and that merely lights don't indicate if it's in correct working order? This is without actually checking it via instructions. The electrical end of this is a little over my head, but I'm trying to learn as much as I can anyway.

Thanks.

 

The lights are controlled by the TCCM. With the pinouts I have posted in other threads, you should be able to test the lights with a 12V power source. You test the operation of the switch by pressing each button and watching the corresponding resistance across the indicated terminals (also in past posts).

 

Yep, I understand the test part with a 12v source. I think your first statement answered my question, being the TCCM controls the lights. Just merely having a light doesn't mean it's working correctly, and I won't know 'till I test it, if I'm understanding this correctly.

If so, thanks!