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after new "a" and "b" solenoid - trouble with p029...


FSchuett

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hello,

today I´ve installed the new shift "a" and "b" solenoid kit

with a new filter kit...

And I´ve see that the old shift "b" solenoid is broken !!!

All 4 balls are in the right position ;-)

After I cleared the code P029, I make a test drive...

Sometimes the transaxle are shifting in all gears (with varying confused speed)

and sometimes it is not shifting.

Now, íf the speed are over 3.000 to 3.500 upm the code P029 with "service engine soon" light will come.

What´s that ?

Frank

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hello,

today I´ve installed the new shift "a" and "b" solenoid kit

with a new filter kit...

And I´ve see that the old shift "b" solenoid is broken !!!

All 4 balls are in the right position ;-)

After I cleared the code P029, I make a test drive...

Sometimes the transaxle are shifting in all gears (with varying confused speed)

and sometimes it is not shifting.

Now, íf the speed are over 3.000 to 3.500 upm the code P029 with "service engine soon" light will come.

What´s that ?

Frank

Assuming that you installed them correctly and assuming that they are good, check the tranmission plug, clean it with electrical contact cleaner and re-plug/re-set it. If that does not work, I would drop the pan and check the connection at the solenoids to make sure its a good solid positive connection and if I could I would check the resistance and continuity of the wiring to the plug.. You can also check the resistence of the solenoids, there is a chart in the FSM:

Automatic Transmission Inline Harness Connector End View

Transmission Side

Connector Part Information

12160545

20-way F Micro-Pack 100W Series

(Gray)

Pin

Wire Color

Circuit No.

Function

A

0.8 LT GRN

1222

1-2 Shift Solenoid (1-2 SS) Valve Control

B

0.8 YEL

1223

2-3 Shift Solenoid (2-3 SS) Valve Control

C

0.8 PPL

1228

Pressure Control Solenoid (PC Sol.) Valve HIGH Control

D

0.8 LT BLU

1229

PC Sol. Valve LOW Control

E

0.8 RED

741

Transmission Solenoid Power

L

0.8 BRN

452

Transmission Fluid Temperature (TFT) Sensor LOW

M

0.8 GRY

1227

TFT Sensor HIGH

N

0.8 PNK

1224

Range Signal A

P

0.8 ORN

1226

Range Signal C

R

0.8 DK BLU

1225

Range Signal B

S

0.8 BLK

1330

AutomaticTransmission Input Shaft Speed (A/T ISS) Sensor HIGH

T

0.8 TAN

422

Torque Converter Clutch Solenoid (TCC Sol.) Valve Control

U

0.8 WHT

420

Torque Converter Clutch Pulse Width Modulation Solenoid (TCC PWM Sol.) Valve Power

V

0.8 GRN

1331

A/T ISS Sensor LOW

post-2998-1183555534_thumb.jpg

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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One last thing -- make sure that the connections for Solenoid A and Solenoid B aren't switched. If all else fails and you weren't sure which was which, try reversing them.

CTS-V_LateralGs_6-2018_tiny.jpg
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Yes, I was Jims_97_ETC before I changed cars.

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Hello,

I´ve found in an old forum, that these new solenoids are hold with a metal bracket in position.

I don´t know where i can install these bracket !

Anyone a picture from the installation ?

Frank

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Frank,

It sounds like you did not install the metal support bracket. If that is the case, that is the problem. I know others on the board have done this repair - hopefully, they will chime in.

The broken solenoid is the failure mode - when they go bad, the housing cracks and they don't function.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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Frank has been looking for exactly where it goes. I know there where pics posted at one time if anyone remembers where they are.

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Unfortunately I don't remember where to put the brackets. I only remember that they were included with the kit and if I recall right I believe that it was an installation sketch in the parcel...

I think it was a 90° bracket with a larger hole in it (for the solenoid). Just put it on the solenoid and the location will be obvious when you're trying to put it back together.

Seems like your problem is there anyway, they are there for a reason you know ;)

Correct me if I'm wrong. Sorry no pictures.

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:rolleyes::rolleyes::rolleyes:

My Eldo is running...

Now, it was the broken "b" solenoid (code P029).

The new solenoids are a little bit different, with no plastic nose

which press the filter in position.

In the solenoid kit is a little metal bracket (L form) to

press the filter in position.

I sheep forgot to instal these bracket :(

Now... it´s running

Thank you very very much from all you helps in these forum...

Frank

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Glad to hear you fixed it Frank! Feels good doesn't it?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Congratulations! I can assure you that you can feel "safe" about the transmission now. THe 4T80E is as bulletproof as they get.

And now the a-bahn awaits? ;)

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Congratulations! I can assure you that you can feel "safe" about the transmission now. THe 4T80E is as bulletproof as they get.

And now the a-bahn awaits? ;)

I love our "Autobahn" without speedlimit and new solenoids :rolleyes:

Frank

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