92 Transmission not shifting properly

[tajohns34]

I bought a 92 K1500 with a 4speed auto about a month ago. The other day it started shifting funky. We took it to a local shop and they said it needs a new transmission. However, after shopping I don't know which on I have. Is it a 4L60 or a 4L80? They said it is electronically controlled. Is there a number stamped somwhere that I should look for? Also, If anyone is selling a transmission for this truck I might be interested.

[Jimmiee]

You probably have a 4L60E if it's a 1500. What is your transmission doing wrong. Are you sure it needs a rebuild?

[tajohns34]

I took it to a local shop and they said that it probably needs a transmission. However, they tried a flush and it is shifting fine now. Does anyone think that If I added a transmission oil cooler it might extend the life of my old transmission?

[silveradotrailblazer]

I thinks some early 90s 1500 had 700r4. As far as tranny cooler, get the biggest tranny cooler you can fit onto truck. Trannys can never be to cool. Also try a larger aluminum trans pan as they als help cool the fluid.

[Jimmiee]

I thinks some early 90s 1500 had 700r4. As far as tranny cooler, get the biggest tranny cooler you can fit onto truck. Trannys can never be to cool. Also try a larger aluminum trans pan as they als help cool the fluid.

Agreed, a transmission cooler will prolong the life especially if you tow or haul heavy loads. The Borg /True Cool style cooler is the best type IMO.

[k.daddy1]

92 Chevy 1500 should have the 4L60. The 4L60E will have an electrical connector on the back passenger side above the pan. Tranny cooler a definite +.