Question about 2003 Cadillac CTS

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My 2003 cts keeps turing off as soon as the car engine gets warm

As soon as the car gets warm it turns off even if im driving and the check engine light comes on. what could be some of the problems this car might be having?

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Thi could be a crank sensor/ cam sensor problem. It could be a grounding problem or a variety of problems. Did the check engine light come on? If so, then get a scan done to identify the exact cause of the problem.

Posted on Jan 04, 2009

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Is it possible for my 2003 CTS to swap engine for CTS V engine? if so, what style and model

It is possible to swap the 3.2 V-6 for the 5.7 V-8 from the 2004-2007 CTS-V (or Z-6 Corvette). You will need to swap out the engine cradle and you will need to use the 6 speed manual transmission that goes with the V-8 and the exhaust manifolds. You will most likely need to swap the PCM and the rear end too. Also keep in mind that the resale value of your heavily modified CTS will be greatly decreased. It would be far easier and cheaper to just trade your CTS for a CTS-V. I am finding 2005 CTS-V models running $15-19,000 on KBB.

Kelley Blue Book

Oct 11, 2014 | 2003 Cadillac CTS

1 Answer

2003 cadillac cts knocking sound coming from engine when started up.

during colder weather, the oil will be somewhat sluggish until it warms up, you may want to change to a thinner viscosity oil during the colder months of the year.

Jan 03, 2012 | 2003 Cadillac CTS

1 Answer

I have 55,688 miles on my 2003 CTS. The low oil pressure/stop engin warning light comes on after I have been driving for 20 minutes or so only when car is idling at stop signs. The oil registers full and...

I was just wondering what happened with your engine??? Because mine is doing the same exact thing, and i am kinda scared.
thank you, email me if u get this at

Oct 20, 2010 | 2003 Cadillac CTS

2 Answers

2003 cadillac cts - white smoke after replacing spark plugs

it will byitself just drive it a bit. the valve cover seals or plug tubes need replacing

May 29, 2010 | 2003 Cadillac CTS

3 Answers

My 2003 cts will crank but the engine wont turn over it started this morning but wont start up again. i took off the gas cap and listened for the fuel pump and i heard that so im not sure what the problem...

you probebly need a crank sensor. take it to autozone and have them check the codes they will usually have a history crank sensor code. they usually act up after driving and letting set. the 03 cts uses the same engine as the later model catera. we have seen alot of crank sensor issues

Nov 07, 2009 | 2003 Cadillac CTS

3 Answers

2003 cts has oil leak at rear left side of left hand cylinder bank it drips on exhaust causing smell and smoke also saturated O2 sensor and turned on engine light dificult to get to or even see

ok, woodhujr,if im not mistaken you had another help request of cranckcase pressure...that problem is causing your leak.
ccny, i have no idea what you are talking about, feel free to enlighten us...
Howard, the best advise i have for you in replacing the valve cover gasket(s) is to get a repair manual for this car/engine and follow the steps as outlined there. I couldnt try to give you step by step instructions in this little box without way oversimplifying.

Jan 06, 2009 | 2003 Cadillac CTS

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