If TCM means transmission control module, what doe...

NO PROBLEM TOLD , NOT ONE TINY CLUE JUST A HUNT
MOST TCM ARE INSIDE THE CONFINES OF THE PCM.
ECM BECAME PCM , THE P MEANS TRANNY TCM ADDED THERE
,BUT WITH SOME EXCEPTIONS ON ENGINE OR DIESEL OR OTHER REASONS. ONLY YOUR DEALER KNOWS WHAT IS THERE
FOR A TRANSMISSION OR LEARN TO READ YOUR VIN TO RPO
;LIST AND LEARN IT.
2004 IS NOT 2014 or 2023 it is a 2004 only question.
Suburban 1500 or 2500 not TOLD.
toss coin 1500
toss coin 4L60 transmission or 4L80
answer is PCM., located 16 control pins tranny to PCM , fact.
now where is the PCm/
we that is easy to
all in the service manual

ID#1

It means either, what it means is this, the Transmission Control module (TCM) has requested the Powertrain control module (PCM) to turn on the check engine light because the TCM has detected a ****** fualt is present, this can be any of a bout 20 problems, that is all it means. What must be done now is to have the TCM scanned for the fault code(s) that alerted the PCM to turn on the CEL.

raqhu kashya, A PCM, Power Control Module is the same thing as the ECM Electronic Control Module. This controls the engine management functions. The TCM, Transmission Control Module controls the functions of the transmission. The two modules do communicate with each other for the proper running of your vehicle. If your PCM is faulty then you will have to have it replaced. Good luck with this.

Fault P0700 just means the PCM (Powertrain control module) has had a command from the TCM (Transmission control module) to trun on the Check engine light to alert you that a fault has occurred in the Transmission, the real problem code is stored in the TCM not the PCM, you must have the dealer test the TCM for the fault code to find out what is casing the TCM fault

(DTC) CODE # P0700....Transmission Control System (MIL Request) Translation: Transmission Control Module (TCM) Malfunction or Failure. P0700 Information Code The Transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. If any malfunction is detected, the TCM informs the PCM by sending a signal (P0700 code). P0700 means that a code has been set in the TCM. This code is for information ONLY. If this code is present, check for transaxle codes. So basically, the P0700 code is telling you to check the TCM for a transaxle DTC. The TCM can not turn on the check engine light so it has the PCM do it.

I hope this helps....let me know if I can assist further !!

Because it is not starting, you should replace the Crankshaft sensor (above the oil filter, back of the engine)-it will cause a P0700-I have a 99 SL2, 178,000 miles


DTC) CODE # P0700....Transmission Control System (MIL Request) Translation: Transmission Control Module (TCM) Malfunction or Failure. P0700 Information Code The Transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. If any malfunction is detected, the TCM informs the PCM by sending a signal (P0700 code). P0700 means that a code has been set in the TCM. This code is for information ONLY. If this code is present, check for transaxle codes. So basically, the P0700 code is telling you to check the TCM for a transaxle DTC. The TCM can not turn on the check engine light so it has the PCM do it. The dealer probably saw the code P0700 and went to the TCM and pulled out the code stored there telling them the Transmission Solenoid Assembly (TSA) is bad. This is a good example of understanding what the codes actually mean. If the manual you looked at said the TCM is bad and to replace the TCM when you see a P0700, then it is wrong.

P0700 is a code that tells u the TCM [transmission Control Module] has requested that the PCM [Powertrain Control Module] turn on the check engine light, u now need to ge the TCM tested for the transmission fault code(s) that were stored when the check engine light was turned on by the TCM through and by the PCM

The code P1698 is: No CCD messages from TCM. That means the communication between the Transmission Control Module and the Power Control Module is lost. Sometimes this happens when a PCM, or TCM is replaced without being flashed, a bad connection at the PCM, TCM, or a bad TCM. Hope this helps.

Hi

Thanks for using FixYa. The TCM means Transmission Control Module which is part of the PCM or Power Train Control Module and is located in front of the left front tire. You can access it by removing the fender liner.

Please do rate the solution and revert for further assistance.


Thanks
Rylee

It means that it didn't receive a signal from the transmision module.
Have your transmission control module checked.

To reset your engine codes:
Remove the negative terminal of your battery (10mm wrench).
Turn your ignition key to START and hold it there for about 15 seconds.
Turn your ignition key to OFF and remove it.
Connect the negative terminal of your battery.

TCM (Trans control Module)
(electronic transmission control module)