Car stuff ?

The elite is faking that they took the real vaccine; the real vaccine will cause spiritual and physical damage. When will the official churches start praying for the false prophet? Orthodox Christian three hand signs are different than Buddhist mudras. Ecumenism = 263 heresies; each heresy leads to hell. Orthodoxy = the only true faith; Roman Catholics tried one cup - one spoon ritual and got sick with Bubonic plague; if heresy enters Orthodox monastery then monks/nuns will get sick with flu/tuberculosis (for instance); Orthodox churches who closed for COVID or had disposable cups/spoons or dipped spoon into alcohol are no longer brides of Christ (now they serve Satan and honor Satan's new COVID religion). Don’t go into UFO to be “healed” by evil demons; demons never do good. SSN is written as a barcode/QRcode; then it's put into a chip; chip is put into vaccine; chipped people are influenced (by super computers) to receive grey plastic card World Passport with no name on it (but when they stretch their hands to get it, gov't clerk presses secret button to administer the unforgivable green 666 tattoo by isotope rays). If you reject mark of the beast (by hiding within a 10-15 people group according to saints Gabriel Urgebadze and Seraphim of Sarov), then your direct ancestors go to heaven (according to saint Vyacheslav Krasheninnikov from Ural). First vaccine shuts off your immune system; second vaccine gives you diseases; third vaccine puts your immune system back and it will start fighting the diseases and will cause death. Saint Paisios from Mount Athos said that the devil wants to deceive the rich with freemasonry, poor with communism, and believers with ecumenism. Elpidios Vagianakis said that there will be seven “mark of the beast” vaccines; reject all of them! Documents are from Satan; burn all the documents that you can find. Electronics will be used to track you. Even old broken unplugged 1970 TV set will show the evil flying antichrist using Tesla's ether. Don’t go into UFO to be “healed” by evil demons; demons never do good; always pray the Jesus prayer or to saints who help right away (like saint Vyacheslav Krasheninnikov according to whom if you reject mark of the beast, then your direct ancestors go to heaven); forgive me.

I FELL awful for you! ! The CADDY is only meant to get to about 100,000 miles and NOT much FURTHER! This is MAYBE an ELECTRICAL PROBELM so START with the BASICS! Use ONLY a GENUINE AC DELCO battery, or an INTERSTATE or a DEKA battery and NOT an AUTO ZONE battery that is PURELY JUNK!  POWER WASH the ENGINE using GUNK ORIGINAL ORANGE engine cleaner! This will insure that WIRING is CLEAN and doing it;s joB!  YOUR issue is about the TRANS and REALIZE that you MUST use ONLY SYNTHETIC OIL! At LEAST MOBIL ONE but I recommend using PENNZOIL ULTRA PLATINUM or ULTRA EURO that is GOOD to 35 bELOW ZERO and is made from NATURAL GAS and gives a WARRANTY out to 500,000 miles! Get a MILD engine DE SLUDGING done before CHANGING the OIL!I also recommend GM X 66 if you can FIND it! Or use my MIXTRUE of HF amsoil power foam and HALF gunk orange original ENGINE CLEANER that is MOSTLY diesel fuel! You can DRIVE on this for an HOUR or so or really EVEN LONGER! It is GENTLE but THOROUGH! YOU CANNOT use VALVOLINE! It will CLOG up the OIL passageways! IT SHOULD not even be on the MARKET!  SORRY to WRITE this but the CADDY engine is NOT made to last more than about 100,000 miles! The use of PENNZOIL ULTRA PLATINUM may get you FURTHER remove the AIR INTAKE SNKORKEL! SO MANY have ISSUES with CADDY trannies as they AGE as well! Using a PROPER BATTERY will help to keep the COMPUTERS working RIGHT! I have seen CADDIES where they re

replace the TRANNIES a FEW TIMES and CANNOT get  it RIGHT! CHECEK the CONNECTION to the COMPUTER! USING PENNZOIL ULTRA oil wll earn you an ENGINE WARRANTY out to 500,000 miles! But you will be LUCKY if they HONOR IT! the CADDY engines have a VERY VERY BAD reputation and are in REALITY half engineered! They are WORN OUT by about 100,000 miles as the ALUMINUM in the motor is NOT an ALLOY but SOFT aluminum! And with CAST IRON insert's! it is NOT meant to LAST very long! ALSO the THROTTLE BODY must be SHOWROOM CLEAN as it gives SIGNALS for SHIFTING! USE AMSOI LPOWER FAOM here and run it THROUGHT the ENGINE PCV valve! REPLACE the HORRIBLE AC delco plugs with DENSO TWIN TIP IRIDIUM LASER plugs! They will ern you up top 25 % MROE POWER and ECONOMY and PROTECT the o2 and the CONVERTER as well AND ALSO many ENGIEN SENSORS from WEAR!  AC plugs are NOT even on the PLUG TESTS any more! They are ANTIQUES and MISFIRE easier! The IRIDIUM DENSO plugs are one of the BEST inventions for cars EVER! They REACT at the molecular level to burn MORE FUEL COMPLETELY and EVERY DROPLET of fuel will be BURNED! The USE of PENNZOIL ULTRA will clean things up like a MOP! The TIMING CHAIN will get CLEANED UP and the FRONT cover and the OIL PAN and the VALVE COVERS! BTW REMOVE the VALVE COVERS and get them STEAM CLEANED to SHOWROOM! They WILL be FULL Of baked on GOO and TAR by now! They have VENTS that MUST be OPEN to allow BREATHING of the ENGINE inside! NOW the TRANS problem!! YOU are LUCKY if it is ONLY a bad HEAT sensor , SPEED sensor, or just plain OLD and USELESS fluid! A  SCAN tool will be needed that can REVEAL issues with a GM type of trans! I use a ZURICH scanner! It is SUPERB! ANYWAYS you are BEST OFF going to a CADDY dealership that has a CADDY experienced TECHNICAIN that has YEARS of expertise with it! WHERE i am there is a RELIABLE TRANS SHOP! It MAY be ONLY that BAD speed sensor or MAYBE even the WIRING HARNESS to the COMPUTER has been EATEN by a RAT ! They are NOW using SOY as a WIRING cover! ANIMALS LOVE the TASTE! In THAT case an ELECTRICAL SHIP will work out just FINE! ONCE AGAIN i I feel SORRY for you! AT 100,000 miles the CADDY powertrain is about DONE! AT 100,000 miles a BMW, AUDI or BENZ is JUST Barely BROKEN IN!  It is a DIFFERENCE of PHILOSOPHY< i  I GUESS, but TRUTHFUL! You can BUY a SCANNER or use the BOSCH unit from an O REILLY store! It is BEST to read your MANUAL about the LIMP IN MODE! and REDUCED POWER mode!  I have WORKED on a few CADDIES and I see their FLAWS and why they do NOT last as long as other car types!  BUT FIRST the ENGINE must be in TOP RUNNING condition! remove the BAKED IN SLUDGE < TAR and WAX and VARNISH first! Use the DENSO TT iridium plugs! POWER WASH the ENGINE CLEAN as possible! REMOVE the COVERS and have them STEAMED so it can BREATHE! Run AMSOIL POWER FOAM through the PCV system to clean the RINGS that are ALSO full of baked in TAR  and even COKE! THEN go with a CLEAN ENGEIN BAY to a FM dealership or REAL trans shop! SADLY GM ONLY wants you to get to about that 100,000 mie mark! T I READ a CADDY owners manual once and was SHCOKED that is said, "at 100,000 miles, replace the ENGINE!?" i COUDL NOT VBELIEVE IT! The TIMING chains in these engines LIKE to BREAK as well! It is like they PLANNED for it to FAIL! ONCE the GOV found this out they FORCED GM to extend a the ENGINE WARRANTY out to 120,000 miles! Its a RIP OFF! NEXT time get a LINCOLN or an AUDI or a BMW or BENZ! They LAST FOREVER with a little CARE! They do NOT suffer from ENGINE METAL FATIGUE! They use OIL SPRAY JETS to reduce FRICTION to nearly ZERO! So you MUST use ONLY GENUINE FULLY SYNTHETIC OIL in them, TOO!  I have ISSUES with how GM does things! We got BURNED with the GASKET LAWSUIT where ALL GM engines made from 1996-2003 are DEFECTIVE and will CAUSE INTAKE GASKET failures! PROVEN in a COURT of LAW! AND TODAY they have LAWSUITS over AIR BAGS and ignition switches that CATCH on FIRE! OLDER GM engines had SOFT CAMSHAFTS and GM wanted you to PAY for NEW ONES! This was for 76-83 CHEVY V8 engines! RALPH NADER fixed THEM GOOD back then! AND I learned about the CADDY timing chain issue from a CLIENT who dumped his CTS engine at 93.000 miles and GM only paid for a USED engine instead of a NEW ONE! That is BAD KARMA! The TIMING CHAIN broke! JEEZ! IT nearly SEEMS like GM wants things to BREKA at 100,000 miles! ANYWAYS PENNZOIL ULTRA will STILL get you a 500,000 mile ENGINE WARRANTY! PLEASE read your MANUAL about drops in POWER! I love GREAT ENGINES that are MADE with the RIGHT metallurgy and run at HIGH engine speeds for nearly INFINITI! AND REMEMBER that the ORIGINAL SPARK PLUGS are just plain POWER WASTING JUNKS! SO SRRY if I RUINED your DAY!  with BAD NEWS! You may STILL get more miles once the TRANS issue is SOLVED! BUT the BEST thing is going to the DEALERSHIP where they SEE these TRANNIES every SINGLE DAY! CHECK your BATTERY for NAME! ONLY! use GENUINE AC DELCO part here! They do BATTERIES very well!>>>CHANGE the FUEL FILTER it is PROBALBY the ORIGINAL ONE!  DRAIN and FIL the TRANS FLUID using PENNZOIL TRANS FLUOD and NOT VALVOLINE fluid!  Since there is a TORQUE CONVERTER that holds MANY QUARTS of fluid and you CANNOT drain it, Change the fluid SEVERAL TIMES! My BENZ cars had DRAIN PLUGS on the TORQUE CONVERTERS! it is ANOTHER reason to BUY FOREIGN! They do NOT cut corners! AND if you need a NEW FUEL PUMP< you do NOT have to DROP the ENTIRE GAS TANK! there is an ACCESS PANEL!  I am SICK and TIRED just now! BAD news EVERYWHERE! COVID is SPREADING in MICHGIAN at an ALARMING RATE! The GOVERNOR is subject to the WOES of the CENTRAL GOVERNMENT and I fear for my LIFE! I had TWO vaccinations but many around me are NOT getting the shots! VERY dangerous I think! VERY SCARY as well! 

Put away your parts shotgun and take it to the dealer.

It is most likely just a electrical problem.

Modules rarely fail as do transmissions.

It's usually a electrical connection that has corroded or dirty DC because of a weak battery or charging system problem.

Either way only DEALERS have the training, tools, and experience level needed to avoid the guessing.

Merely throwing parts at something only induces MORE problems till NOBODY can fix it.

You're in LIMP mode. 

It sounds like you've had a control module failure.  That would be an electronic problem.

https://www.700r4transmissionhq.com/p0700-cadillac...

https://www.autocodes.com/p2544_cadillac.html

You're lucky the tranny shop didn't talk you into replacing the transmission. They usually do that. Take it to the dealer and get it diagnosed.

The car is likely in limp home mode because the computer  does not "like" signals or is not receiving signals from the TCM or the transmission is not responding to throttle inputs due to failing solenoids or a transmission electrical problem.

P0700 is a general transmission code that will be seen in a scanner that cannot read transmission trouble codes in cars with a transmission control module.  You will need to see a mechanic (or a dealer) with an advanced  scanner that can read transmission trouble codes.  With a P2544 code, suspect a bad TCM.  Good luck