I have a 99 blazer with the np8 option and my tccm is bad. I found one out of a 02 tahoe with the np8 option with p/n 15749703. Would this interchange with my p/n 15154323?

 

Interchange list does not show that as a valid part for the S-series NP8 option code. The fullsize truck uses the NV246 transfer case while the s-series uses the NV236. Same basic concept, but different ratings. You could give it a try, but it doesn't show as being a valid part.

 

Thanks for the fast response. I think I'll wait til I find the right one. I'd hate to mess something else up trying it.