transmission problems on my 97

[Sully]

I posted this in the trans problems sticky with no response so I think I will try a new thread hoping to call attention to my issue.

I'm having issues doing 60mph. Sometimes the truck will shift between two gears trying to find the right one for that speed, but then it stopped doing that and just flat out couldn't do it. Giving it more gas just made it rev higher no difference in performance. Sounds like a slipping clutch to me I'm assuming thats the the torque converter. Then I get it back home (limping) and go to back down my driveway and nothing. The motor just revs. I did notice that the tranny seems to be leaking from the dipstick. My fluid levels are in the middle of the cross hatching.

I have a 97 silverado 1500 5.7L 4x4 with the push button 4x4







as an update, I got the truck to back up by adding a bunch more fluid. Now when I take her out, its not shifting from 2-3. This was not an issue yesterday. Not sure whats going on. I have added Lucas to the atf and still am getting the same lack of 2-3 shift.

 

[Sully]

if it wont shift from 2-3 wouldnt it mean the 3,4 clutches are toast? Thus meaning the tranny has to go in for a rebuild?

 

[Hodges87]

Sounds like your transmission is going out. Is you "Service Engine Soon" light on? The computer uses 2 shift solenoids in the valve body to shift gears (1-2, 2-3), and if one goes out a code will show up and your transmission will not shift.

 

[Sully]

it is, but it was on before and I havent had a chance to read it yet. I could have a code or could not IDK for sure yet.

 

[Hodges87]

If you lucky, it could be a code for a 2-3 shift solenoid. Its a cheep and easy fix.

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[Sully]

P1870 Transmission Component Slipping

 

[Hodges87]

Do a search on here for that code, my old truck (97 C1500 5.7L) was shifting bad and that code appeared and I fixed it. I also wrote some more info in another thread.

 

[Sully]

I found some videos you posted about swapping them out. Good info.

Does this mean that if I get a shift kit it will fix the problem?

 

[Hodges87]

Here is the thread I was talking about.

http://www.gmt400.com/forum/showthread.php?254-P1870&highlight=p1870

A transgo HD2 shift kit comes with a new tcc valve, so it could fix the problem but I don't know from experience.

 

[Sully]

yeah, thats the one I was reading