2003 Cadillac CTS - Page 3 - Answered Questions & Fixed issues

Just guessing but trying to help...Your car might be vapor locked..Take off your gas cap... Do you heat KT sucking in air as you take it off...If you do your car will now start...A lot of people at the gas pump will try to get that extra fifty cent in their tank at fill ups..Thats the worst thing you can do. What your doing is putting gas down your gas vapor line...Its meant to burn vapors from your gas tank..When you over fill your gas tank this gas runs down that line into a canister that has charcoal as the filter built inside. Over time your gas will harden the filter to where it becomes clogged..Then as the pressure in your gas tank becomes greater than your fuel pump...Your car will shut off not start back up until the pressure in the tank drops....You can replace this canister... Most are behind your headlights on drivers side..Its that little black box your never did anything..On some vans there underneath...Another thing :is as these canister's go bad your putting all that broke down black charcoal right into your carburetor.. That's those lines thats those lines that are hooked to it at the bottom...So your feeding your car junk...Never over fill your car because in time it will shut off...So just loose the cap and lesson for air sucking in....Try to start it with cap off...More unlikely you have a non stock fuel cap..Either drill tiny hole in the center of cap or replacei it with factory stock...Also some cars have a fuel shut off switch that will shut the gas off in crashes...Sometimes these switches will go bad....they can be reset...Might be in truck under matting....Good luck...Hope all of this helps someone

yes,contact your dealer

Cadillac did send out recalls on the key issue. I have a 2004 cts and they took care of the problem free of charge.

How does what read ? What fuse for the A/C ?

It is under the hood see picture

This is caused by a defective air temperature control blend door actuator motor or a jammed blend door or in most cases both..

Sounds like you need to replace the clutch in your vehicle. If you are not mechanically inclined, best to take it to a shop that specializes in transmissions.

Remove the radio and have it repaired by one of the many online repair businesses, average cost about $250.

5 quarts should top this engine off. This engine requires synthetic as well. 5w 30 for colder climates and 10w 30 for warmer.

also check the heater valve is working for coolant to flow to the internal heating radiator

code p 2176 refers to throttle actuator control(TAC) system--idle position not learned ===causes basic setting not carried out code p 1795 is CAN bus--throttle body position code p 1780 is park/neutral position (PNP) switch circuit engine torque signal circuit code p 1779 is engine torque delivered to TCM signal go google and type in cadillac fault codes and find a site that has all the codes listed

Need to pull wire from fusebox or dissect switch. Cud b hardjob on a caddy. A partstore can show u diagrams.

http://www.cadillacforums.com/forums/suspension-brakes-tires/175079-service-stability-sys-c1214-c1248-help.html#/topics/175079?_k=qjgisg

Could be as simple as a wheel sensor... Run up to autozone and plug up and run the codes...

Engine Control Module (ECM) In the engine compartment, in the RF corner . Sorry but this all service info said .

If the sensors were replaced an DTC'S come back has to be a wiring problem or PCM , The ECM detects that the HO2S heater low control circuit voltage is between 2.6-4.6 volts when the heater is commanded OFF, indicating an open HO2S heater circuit. Is the fuse open? All four codes refer to the heating element circuit ! there is a relay in the under hood fuse box that supplies B+ voltage to the O2 sensor heating elements . I would change that or test the relay , videos on you tube on testing relays . MAIN Relay -- LO SPEED Relay, HI SPEED Relay, S/P FAN Relay, PRE O2 Fuse, IGN-1 Fuse, ECM Fuse, POST O2 Fuse, and INJ Fuse Also check POST O2 Fuse 10 A HO2S Bank 1 Sensor 2 and HO2S Bank 2 Sensor 2 PRE O2 Fuse 10 A Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 and HO2S Bank 2 Sensor 1

Could possibly be ! check the part numbers , should be stamped on the part somewhere . Do they both have electronic throttle control ?

It is located under the car near the gas tank on a tray with the fuel vapor storage cannister

There could be an issue with the transmission, or you might not have it fully on R

What DTC - diagnostic trouble code ? Then I could tell you .