Transmission Problem 1990 C1500 th700 2wd (4l60)

[Chevyman555]

ok so I was driving down the road and all of sudden my truck is acting like its going in to neutral when it hits 3rd but heres the wired part its still got Reverse and most transmissions that go bad that I know of lose Reverse mine still has Park 1st 2nd Reverse
-Th700
-2wd
-1990 C1500
-5.7

 

[SCOTTYINWV]

700r4?

 

[Chevyman555]

yes it is the 700r4 sorry

 

[lha1992]

First off the reverse going bad doesn't need to be a sign of the transmission going bad. It could lose 4th an then lose 3rd later.

My 89 has a 700R4 also an it lost 3rd then 4th but I would force it into gear but eventually I lost 2nd through 4th. Still has reverse an 1st.

Ended up it blew a seal between the 2nd an 3rd clutches an had to rebuild the whole thing.

Have you changed the fluid recently?

Sent from my GT-I9100 using Tapatalk

 

[bowtie-till-i-die]

Mine did that once, while on the freeway in got over and stepped on it, it dropped down to 3rd and rpms went up but they truck actually started slowing down. I changed my transmission filter and it worked fine after that

 

[Chevyman555]

I went down the road and floored it up to speed and it made it to 45mph and shifted to third and did the high rpms and still no shift and I checked the fluid it was full and not burnt it was brown

 

[rhino]

That's probably the most common destruction on of a 700R4.... The 3/4 clutch pack is smoked. Time for a rebuild on that jewel.