Tranny Guru's: Help with 460LE

[cwmccray]

Hey Guys... I need your insight...
My 93 1/2 Chevy 1500 stopped shifting on the way home from work. At a light, it felt like the lockup solonoid is locked. I have no first, so pulling from a light is like I have a big "STALL". I checked the fluid and it was not burgundy, it looked like motor oil. I changed the fluid and it is still like the TCC is locked. I do not have a TV Cable to adjust. The only mod to tranny is the B&M Electronic Shift Improver. I placed the Shift improver on firm and as I select the gears, I get a thud as I go through the gear (Pressure upped). While the pan was off, I check the connections to the solonoids and all were solid connections. My question is, would a solonoid keep the tranny from shifting? Did I just burn up my tranny? Is my front pump gone?

Thanks
Chuck MCCray
85 T Type
85 SVO Mustang
89 Honda Hurricane 600
93 Dropped Chevy 1500 Silverado

 

[chris718]

sounds like the trans is taking off in the wrong gear ,which can be many things ,a blown fuse ,broken wire ,bad ground ,solenoids ,etc .put it on a scanner ,prefferably snap on ,and youll go right to the source of the problem w/out too much hair pulling.www.ckperformance.com

 

[cwmccray]

Short of a Snap ON Scanner, is there any other way of diagnosis?
I have an old OTC, but I believe that it would pull any code for the tranny. I will check the four prong plug in the tranny. Where do I look for a blown fuse?

 

[Hawaiian Turbo]

I have the same problem on my truck. I've searched boards and I've found that it's a known problem. It happens when the trans heats up. It'll probably have a 1870 code. Input not matching the output speed, therefore telling the puter that the trans is slipping and locking it up. I leave it in 3rd gear and it doesn't do it. I guess I'm just posponing the rebuild. Some say that it could be a connection also. The plug to the trans heats up and melts causing a short. That wasn't the case with mine though. I can turn the truck off for a few minutes and it will reset the puter, although the SES light is still on for a few days, then clears too.

HTH

Paul

 

[chris718]

i agree ,and the scanner is definately the rightr thing.i dont use otc so im not sure if it reads transmission codes w/out certain tapes.www.ckperformance.com