[DeanC24]

Just received another CEL pertaining to a shift solenoid.
I had the exact same thing last year (different solenoid).
So while I am prepping to do my TransGo HD Shift Kit, I decided to replace all the electroniccs on the valve body.
This can be found in a Master Solenoid Kit.
However, the ones I was finding, were a mix/match of different manufacturers parts.
I wanted all GM/ACDelco parts.
I ended up having to source each part individually.
They are as follows:

1-2 & 3-4 (A-B) Shift Solenoids: ACDelco #24230298
Electronic Pressure Control (EPC)/Force Motor Solenoid: ACDelco #24227747
3-2 Downshift Solenoid: ACDelco #24212327
TCC Lock Up Solenoid Wire Harness & TCC/PWM Solenoid: GM #12143279
Pressure Manifold Switch: GM #24219581

These all came to about $150, give or take a little.
Thought I would post this up in case anyone else was considering this.
With our parts being 20+ years old, and the fact I have now had 2 solenoids fail in 2 years - its probably a good idea to just replace it all at once, and have peace of mind that genuine GM parts are being used. Unfortunately, I wasn't able to make the time to replace the solenoid last year, I had a local reputable shop take care of it for me. But I will be replacing it again with a GM part, since I am not sure what he used. Its only a $21 part anyway.

Hope this is helpful for someone.

 

[Whisperjet]

TCC Lock Up Solenoid Wire Harness & TCC/PWM Solenoid: GM #12143279

Was this to eliminate the dreaded P1870 TCC Lockup code? I have an RPM Stage 4 Transmission and am constantly throwing this code.

 

[DeanC24]

Lockup Solenoid & Harness

WhisperJet - no, I was only replacing all electrical items on the valve body as a precautionary step. I only want to be up inside this thing once. And its cost effective to just do it all.

 

[DeanC24]

** update **

I was able to find a package deal of everything that is all ACDelco products.
(except the wiring harness)
This is the kit I ordered.

*NOTE: this kit will not work for anything OBDI (1995 and prior).
This kit is for 4L60E from 1996-2002 only.

Solenoid Kit Pressure Switch Manifold & Harness--1996-2002 4L60E Transmissions | eBay

 

[longwell]

** update **

I was able to find a package deal of everything that is all ACDelco products.
(except the wiring harness)
This is the kit I ordered.

*NOTE: this kit will not work for anything OBDI (1995 and prior).
This kit is for 4L60E from 1996-2002 only.

Solenoid Kit Pressure Switch Manifold & Harness--1996-2002 4L60E Transmissions | eBay

Thanks, the list of components was helpful, but this link is dead.