89 s10 blazer help

.....ask a Chevy dealer

They will bolt up. You may want to get the wiring plugs off the 97 t case as they will be different from yours. Or use your old t case

I had a 1987 s10 4x4 and put a new battery in it and the 4x4 quit. turns out the vacuum control is right behind battery. listen for sucking sound and see if it is loose on yours.

Have you checked the vacuum actuator under the battery? Battery acid will leak down and cause all kinds of issues with them.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

This is all I've got.Hope this helps?

go to site on computer, autorepair.about.com this page should help you. click on troubleshooting, there you should find info you need.

It's not worth doing all that conversion, buy the time you spend the time and money to convert the 89 4.3 to work on the 98 blazer, it would be cheaper to install a 98 vortec rebuild. The 89 4.3 have a TBI fuel injection system and the ecm on the 98 will not work and the bad news is that the ecm on the 98 also controls the transmission shift points and the 89 will not, so even if you swap the ecm to have the 89 4.3 engine work. the transmission will not shift. Sorry for the bad news but it would be cheaper to replace the 98 engine with the years of 1996 to 2001. Good luck and hope this helps. 

If it has a carberater.The flots are probley sticking

gas tank

look at the drivers side rear of the engine next to trans