4l60e Problems In Od

[dshannon]

After doing quite a bit of reseach, I have read about the P1870 code, and the TCC valve or solenoid, forget what it is called. I was wondering if it is better to replace the whole valve body, put in an oversize valve from TransGo or Sonnax, or there is also a shift kit from TransGo. I am planning on replacing the trans this summer, but I'm commuting to college/work/play 7 days a week. The stupid TC dosent stay locked in OD, my tach jumps up and down, about 4-500rpm. I shift down into 3rd, and its fine. So can anyone give me a ballpark figure of what to expect to pay for these fixes installed by a local shop?

 

1. Valve body

2. New oversize valve

3. TransGo shift kit

 

also, I am planning on replacing with this trans, or something like it this summer:

 

http://finishlinetrans.com/store/product_i...;products_id=28

 

oh yeah 1998 GMC Jimmy 4.3L 4x4, 4l60e, with 107,XXX miles

 

Also, Ive heard it can be the brakelight switch, where is this so I can check it? How can I check it?

[dshannon]

bumpity bump. can anyone tell me where the brakelight switch is? or anything else for that matter? thanks

 

Dan

[inspectormatt]

bumpity bump. can anyone tell me where the brakelight switch is? or anything else for that matter? thanks

 

Dan

 

 

Brake light switch is usually on the steering column down by the brake pedel. My 93 Suburban with the 4L60E has torque converter shudder. It will shudder under load at steady throttle in OD. I ordered a new TCC solenoid and will replace it once I get it to see if that fixes the problem.