I have a 2000 chevy blazer ls when i am stoped i cant swich over in 4wd hi or lo. Only 4X4 auto will work. But when the car is moving the 4wd will work with no problems at all.. what can cause this? Thanks for your help and tme Rob

 

Are you putting it into neutral before switching between 4hi/4lo and 2hi? The truck should always be in neutral when switching. If not you're going to tear the transfer case right out of it.

 

Yes everytime i use neutral. I just dont get it

 

Is it really rough shifting between the 2 when you're rolling? Link clunking and banging?


EDIT: Just so I can have record....post # 4000!!

 

This can sometimes be normal. If things don't mess up just right inside the transfer case, it can prohibit it from shifting. Typically, it is best to be slightly moving with the transmission in neutral while doing any range shift (2HI or 4HI to 4LO or vise verse). You should be able to do a mode shift (2HI to 4HI or vise verse) while moving or stopped and the transmission should not need to be in neutral, but again, sometimes moving helps to make things mesh together properly.

Lush! LOL Congrats!

 

There is no noise or anything at all. i can hear everything swich over with no probems. I think i will change thr whole 4x4 System fluid and replace the vac lines some look like they are on the way out