Stuck under a load.10 speed Meritor Transmission will not go into high

Anyone know of a shop in Phoenix that's good with Meritor 10 speed?

 

I'm having this same issue in my 03 classic. It grinds going low to high and back again but sometimes it won't go to high at all. When I flip the lever back to low it grinds going back to low. From what I've gathered it sounds like my high side solenoid is going out correct?

 

Did u replace synchronizer?

 

I ended up sheering a key off in the trans and had the whole thing rebuilt. As far as sometimes not going into high range it was the harness that ran from the bottom of the shifter to the solenoids had worn out and didn't always make connection. Replaced it and never had issues again and sold the truck a few months later.

 

I’m hoping that’s my problem (the wire from shifter knob) replaced the two solenoids, and gear shift knob. So the wire is next. Fingers crossed

 

If I had the part number is send it to ya but I don't. The neutral safety switch can also cause the same no high range issue

 

Thanks for this post! U were right after shift knob and solenoids I put a jumper in neutral plug. And bam I have high and low. Thanks

 

i had this problem before... it was wire problem