20 Most Recent 2005 Cadillac STS Questions & Answers

It is much better to remove the trim from the inside of the trunk lid. It is quite easy and you will eliminate the possibility of scratching the paint on the exterior or breaking one of the lamp housings. With the trim off, you don't actually need to remove the lens. You can simply reach in, twist the bulb and remove. I've never had one of the lenses out (although I have replaced my licence plate bulbs) so I'm not sure if the ability to remove them from the outside is accurate or not. Also I take my replacement bulbs from here Aliexpress Homepage almost for free, hh
Hope this helped

2005 Cadillac... | Answered on Mar 25, 2020

Slight glitch from what I've found. Has happened to me at the gas pump. One other time while talking outside my car with out opening the doors. If No FOB detected then step out of the car lock and unlock, get back in and try. If still dosen't detect then you need to walk twenty feet away with your key and it should reset.

2005 Cadillac... | Answered on Aug 21, 2018

Do you know what diagnostic flow charts are ? Every DTC has a factory diagnostic test's to test electrical circuit's , computer , sensor's etc...
DTC C0561 System Disabled Information Stored
The electronic brake control module (EBCM) disables the traction control when other electronic control modules set DTCs for components that effect the operation of the traction control system.
The PCM or BCM diagnoses a condition preventing the engine control portion of the traction control function and sends a serial data message to the EBCM indicating that torque reduction is not allowed. The PCM or BCM will typically set a DTC and the EBCM will set this DTC.
Diagnostic Aids
This DTC is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS/TCS system.
DTC C0242 PCM Indicated TCS Malfunction
The electronic brake control module (EBCM) and the powertrain control module (PCM) simultaneously control the traction control. The EBCM sends a serial data message to the PCM requesting torque reduction. When certain PCM DTCs are set, the PCM will not be able to perform the torque reduction for traction control. A serial data message is sent to the EBCM indicating that traction control is not allowed.

This DTC is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS/TCS system.

Your best bet , take it to the dealer where they have factory scanner an can read the info you can't.

2005 Cadillac... | Answered on Apr 10, 2018

I tried the DIY service and repair manuals from a website and it actually helped me
repair transmission problem in my jcb 3cx site-master. it wont move forward or reverse, engine is good both solenoids for forward and reverse work.
I don't have much technical knowledge but I just followed it step-wise, and works perfect! got it from www.reliable-store.com

2005 Cadillac... | Answered on Mar 23, 2018

You will get your solution and all info on service info, repair info, parts info, wiring/electrical/fuse diagrams, error/fault codes, torque specs, PCV, , owner's/service/repair/parts/maintenance manuals etc everything
this website www.reliable-store.com
it's a very good website for vehicle problems even as old as 1991 ford..

2005 Cadillac... | Answered on Mar 19, 2018

Your best bet would be to have the vehicle scanned for DTC'S - diagnostic trouble codes first . Do you know which of these your vehicle has ?
Keyless Entry System Inoperative (Active)
Keyless Entry System Inoperative (Passive)
Does the customer complain about other symptoms related to this, such as poor range when the key fob buttons are pressed or intermittent Tire Pressure Monitoring issues? (It's possible the RF External Antenna at the RCDLR may have a poor connection.)
YES - Go to Step 3
No - Go to Step 4
Inspect the external RF antenna connection at the RCDLR. First, gently pull on the coax connector at the module. If the coax comes out, then it wasn't seated properly. Remove and carefully inspect the coax connection for bent blades or a bent center pin. Fix coax connection if necessary and re-seat connector until a "click" is heard. Gently pull on the coax connection to make sure it is seated properly. Was the inspection made?

Press each button of the transmitter one at a time.
Does the system operate normally?
YES - Go to Testing for Intermittent Conditions and Poor Connections
NO - Go to Step 5
Lock and unlock the door locks using the controls inside the vehicle.
Do the locks operate properly?
YES - Go to Step 6
NO - Go to Symptoms - Doors

Operate the rear compartment release and the fuel door release from the controls inside the vehicle.
Do the rear compartment release and the fuel door release operate properly?
YES - Go to Step 7
NO - Go to Symptoms - Body Rear End

Important: Ensure that the keyless entry transmitter is the correct model for the vehicle remote system. A wrong model transmitter may pass this test, but will not activate the keyless entry system.
Turn on the J 43241 Keyless Entry Tester.
Place the transmitter on the J 43241 test pad.
Press each button of the transmitter one at a time.
Does a tone sound and the green light illuminate on the J 43241 after each button is pressed?
YES - Go to Step 12
NO - Go to Step 8
Do any of the buttons on the transmitter sound the tone and illuminate the green light when pressed?

Replace the keyless entry transmitter. Refer to Transmitter Programming.
Did you complete the replacement?
Go to Step 12
Perform the programming procedure. Refer to Transmitter Programming.
Did the drivers information center (DIC) beep and display a message ready for next fob?
Go to Step 14
Go to Step 13
Replace the remote control door lock receiver (RCDLR). Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 14
Operate the system in order to verify the repair.
Did you correct the condition?

2005 Cadillac... | Answered on Feb 21, 2018

Check the IAC (idle air control) motor, the TPS (throttle position sensor) and the EGR valve - any one of these can cause the problem, but I would carefully check the IAC first (they often stick or fail due to heavy buildup on the plunger and/or a plugged air gallery).

2005 Cadillac... | Answered on Feb 01, 2018

These navigation disks are prone to contamination from dust particles over the years. If the disk is not damaged (scratched), you can try gently cleaning it to see if that works. You can also try a special lens cleaning disc to clear any dust from the reader.
However, if you have you followed all the owners manual instructions for removing it and it won't, you have a much more serious problem with the system. All I can suggest is a trip to a dealer to see if they can help.

2005 Cadillac... | Answered on Jan 20, 2018

For a Northstar engine, it is usually located at the right end (passenger side) of the back cylinder head.

2005 Cadillac... | Answered on Jan 14, 2018

Have it checked with a code reader. You have a dead cylinder. The code reader will tell you which cylinder it id. That cylinder needs a fuel injector change. Symptom being, when start moving and normal throttle, shifts thru the gears fine with no loss of power. As soon as it goes into Overdrive, it feels like the whole car is going to vibrate off its chassis. That thumping is what we call a dead cylinder. Because it is just that, dead. Yet when you push the pedal down, it will downshift and run fine. Change the injector.

2005 Cadillac... | Answered on Dec 01, 2017

Check your car silencer pipe that may be touching or hitting the car body

2005 Cadillac... | Answered on Nov 11, 2017

Take it an have vehicle scan done . Your vehicle has a vast amount of electronics , control modules , communication networks for the modules to share data on . All it takes is one of the wires touching ground to cause all kind of problems . There are modules inside the doors that control power windows , locks , mirrors etc. . Hooking up a scan tool that can check for communications from all modules . Not a code reader . A GM factory Tech 2 would be best . I work for Cadillac ,have for twenty years .

2005 Cadillac... | Answered on Jul 27, 2017

Hello John Bland,

Light Emitting DIODES. DIODES... all semiconductors
are highly susceptible to FAILURE if improperly handled.

In a protected (anti-static) environment they do have an EXPECTED LIFE CYCLE.

In an UNPROTECTED... POORLY handled environ... you
can expect the slightest SPARK... (you might not even feel)
to render any/all semiconductors into USELESS trash.

STUDY UP: ESD = ELECTRO-Static Discharge.
Modern electronics should only be handled by qualified

REAL "qualified" technicians (at least while the BOSS
is watching) wear anti-static wrist-bands.

$300 Compared to $10K, $20K and $60K (etc. etc.)
circuit boards YOUR STS tail lights are pretty cheap...

I'd still recommend borrowing, begging or buying
a WRIST STRAP ... I am just saying.
(see below (50 years industrial experience)).


More Information for VARIOUS MFR GM2800199

Carnac the Magnificent

2005 Cadillac... | Answered on Jun 01, 2017

Which engine ? 3.6 or 4.6 ?
One of them doesn't have a MAP sensor !
Manifold Absolute Pressure (MAP) Sensor (w/LH2)
Front center of the engine in the back of the throttle body
Engine Controls Component Views in Engine Controls - 4.6L

2005 Cadillac... | Answered on May 22, 2017

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