Need Help?

2003 Cadillac CTS Base 4dr Sedan

2003 Cadillac CTS
Trim Info:
Rear Wheel Drive, 4 Door Sedan, Mid-Size
19 mpg city / 26 mpg hwy
Other Trims
Do you own this car?
Estimated Mileage
Enter current mileage for most
accurate info about this vehicle

Track Your Service Records
Get Recall Alerts
Get Updated Value Estimates on Your Car.
Ask the Community

Ask Our Auto Mechanics

Ask our panel of certified mechanics a question. We pay for their advice so you don't have to.

Enter a Question:
Which Car is This Question About?

Recent Questions

How much will it be to tune up a 03 cadilac cts
U have a 03 cadilac all other thing have been maintain but I have never had a tune up trying to find out how much it will be
Asked by William S May 27, 2014, 11:53 am 0 reply
mobile 1 oil
Many GM dealers in the Toronto GTA have switched their oil to "Dextos" a GM brand now being used on the new vehicles. Dextos is a blend and I have just switched dealerships, as the...
Asked by Wolfe B May 14, 2014, 12:09 pm 1 reply
twixx candy bar in gas tank
Someone put twixx candy bars in the gas tank. Can this mess up the car ? If so how bad ? What do we do ?
Asked by Chris Q May 4, 2014, 12:09 pm 1 reply
My 2003 Cadillac CTS sporatically will begin shifting rough during acceleration and deceleration.
Has anyone experienced this problem and how did you correct it? Thanks. Phil
Asked by Phillip P May 13, 2014, 1:34 pm 1 reply
can twixx candy bars mess a car?
Someone put twixx candy bars in my man gas tank. Will this mess up his car ? If so, how bad ?
Asked by Chris Q May 4, 2014, 11:56 am 1 reply
Is idle too low at 600 rpm?
Bought used cts with 3.2 v6 1 year ago now has 94 k miles. Always run a little rough, could feel it sputter at all rpm ranges. Codes eventually called for 2 coil packs and both cat...
Asked by Mark B May 3, 2014, 10:12 pm 1 reply
My car sometimes seems sluggish
Feels Like>> Vehicle is sluggish>> When I need passing power or just driving it seems to jerk sometimes.Yes>>
Asked by Vincent H April 28, 2014, 12:12 pm 0 reply
Raplaced Air Filter, Now Check Engine Is On.
Hello; A few weeks ago I replaced my air filter and used a oil/gas additive called Ocean Foam (or something like that). I did it because I noticed my MPG had dropped down to 13 a...
Asked by Michael B April 9, 2014, 11:38 am 1 reply
Right Taillight Not Working...kinda
Hello; People keep telling me my right brake light is out. But when I lock/unlock the car at night, the light comes on. It seems if the key is in the on position, the light won'...
Asked by Michael B April 9, 2014, 11:28 am 0 reply
2006 Cadillac CTS metallic grinding noise under car
Alright so I have a 2006 Cadillac CTS which has 128,000 miles on it. I've recently bought it from a dealership around 1 week ago and I've been hearing this grinding/metallic/vibra...
Asked by Kevin W April 3, 2014, 1:00 pm 0 reply

My Auto Score

See the free AutoCheck score

Meet The Experts
Kim Perrin
Kim Perrin is our resident mechanic here at DriverSide. Kim worked as…
Tyler Orr
Tyler Orr is an expert in German and Japanese cars and has been a mechanic …
Elizabeth Kriesten
Elizabeth Kriesten worked as an automotive technician for several years at Dodge…
Tips on Servicing

Car Brakes: How Do You Know When to Change Them?

By Zach Bowman For those who suffer a daily commute through heavy traffic, your vehicle's braking system can bring thousands of pounds of metal, plastic and empty Starbucks cups to a stop hundreds of times before you get to work. It goes without saying that these pieces wear out, but they do so slowly, meaning you may not notice they need attention until ...

Read more…