No Reverse

[Mykey]

So I recently put in a new monster heavy duty 700r4 in my 1986 Silverado and just like the last transmission (which I got at a junk yard) after about 50 miles or so it wouldn't shift up or go in reverse. 1st gear worked fine. When I look at it it was about 2 quarts low on ATF and I found that the pan bolts were only finger tight. I topped it of ran it for a bit and the forward gears started to work again but still no reverse. There's no rpm change when I put it in reverse either. It just feels like neutral. Brand new monster transmission and tourqe converter. I'm not a transmission guy so any help would greatly be appreciated! Thank you.

 

[74 Shortbed]

Another Monster transmission, that's a shame. But did you make sure the TV cable and linkage is adjusted "right", if all is correct I'd be calling them up and making them make it good.

 

[1987 GMC Jimmy]

Absolutely. You shouldn't have to pay for someone else's mistakes.

 

[Tank6x2]

Run it,

Chalk the wheels, Run at idle in neutral, get your fluid moving, check you fluid while in neutral, do this for about 10-15mins, place in park, engine running in park adjust fluid level, leave running 10-15min in neutral place in park and recheck. Then place in reverse, see if it works...