Question about 2006 Cadillac CTS

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2006 CTS Engine light on.

68000 miles

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Whenever this warning light or any other stays on in the dash it is indicating that the systems control module (or the system sensor in the case of lights like low oil pressure, door open indicators etc.) has detected a fault, it then disables the system (this applies to ABS,TCS, TCM, SRS, TPMS, MIL, CEL and BCM faults and others) as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)

Legend of Abbreviations. ABS Anti-lock brake system. TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module. TPMS Tire Pressure Monitor System, MIL Malfunction Indicator Lamp, CEL Check Engine Light.

Posted on Nov 06, 2012

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Posted on Jan 02, 2017

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SOURCE: My 2005 Cadillac CTS uses

It's normal for most cars with significant miles on there to use oil, you won't see or smell the oil being used because some of it gets burned internally between the piston and the piston rings, I wouldn't worry about it until you start seeing blue smoke coming out of your exhaust while the engine is running, in that case your piston rings are worn aqnd it's tome for a new or rebuilt motor.

Posted on Feb 24, 2011

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What does a po496 code mean? why is engine light on? When I purchase a gas cap will this solve the problem? How can i fix it without seeing a dealer? 2006 cadillac cts 3.6 engine


The code insinuates that your purge valve has problems and probably needs to be replaced. Rather difficult to explain the repair but I did manage to find what you need to do on video.

https://www.youtube.com/watch?v=08R_-QFGpDM

Sep 26, 2014 | 2006 Cadillac CTS

1 Answer

50000miles cts 2006 2.8 engine idles a litte rought somtimes a stop lights


You changed the spark plugs twice since 2006?

Every three years-- I do mine

Ignition Coils won't last 8 years,not all of them

You have to look at scan tool data & road test

Can not use a car for years & never work on it

Your dealing with time in years & heat cycles

Nothing at all to do with mileage

Usually 100,000 miles you change oxygen sensors

Yours are 9 years old,so they go based on time & again
scope them, for switching times & look at the data

Don't change your oil 3 times a year,you have engine wear

Could be any number of things causing your cars issues

Aug 16, 2014 | 2006 Cadillac CTS

1 Answer

Rough idle when car is started and makes noise with acceleration


If you run with a check engine light on then you are looking for big dollars for repairs.. The light is there to tell you to have the fault codes read so that repairs can be kept to a minimum. So run the fault codes and find the fault .

Jan 21, 2014 | 2006 Cadillac CTS

1 Answer

Wont start engine light flashing


Have you tried to jump the battery and crank it ?
Its possible the alternator failed or something happened to drain the battery.
Is the security warning light on ?

Sep 07, 2012 | 2006 Cadillac CTS

2 Answers

My 2005 Cadillac CTS uses a quart Oil between oil changes, what could be the reason. There is no pooling under the motor and buring smell or smoke and the car only has 68000 miles


It's normal for most cars with significant miles on there to use oil, you won't see or smell the oil being used because some of it gets burned internally between the piston and the piston rings, I wouldn't worry about it until you start seeing blue smoke coming out of your exhaust while the engine is running, in that case your piston rings are worn aqnd it's tome for a new or rebuilt motor.

Feb 24, 2011 | 2005 Cadillac CTS

1 Answer

My engine light continues to turn on, I was told the code is P0496 that shows when they connect the computer. They tell me it could be the gas cap or the emission valve. I would like to know wher is the...


P0496 is not a gas cap, problem is with the purge vent solenoid (on intake manif) or purge vent valve (under car by fuel tank). Most likely the vent valve. Depending on your vehicle/VIN you may be eligible for the 10 year/120k mile warranty Caddy just came out with but is keeping a tight lip on. See bulletin #09205 dated 3-11-2010. Good luck with this!!

Dec 07, 2010 | 2006 Cadillac CTS

1 Answer

2006 explorer with 68000 miles stalled last night. wrench light and check engine lights came on. now, just check engine light. mechanic says throttle sensor needs to be replaced. does computer need to also...


You can buy the TPS Sensor, at any auto parts store, and install yourself.
Just two torx screws ,T-20 I believe, About $78.00,check NAPA.com etc.

No reprogramming of PCM. Don't know where that came from.

You better have a TPS Code set, or know how to test it.
Even the pros throw parts at vehicles,without testing first.
Test it and do yourself.

Oct 08, 2010 | 2006 Ford Explorer

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