Take it to the dealership.
no such thing as 2002 cts
At some point it will. A spark plug has a life span.
You can start with the Cadillac dealerships in your area by calling them up and asking if they have or know of someone who has a Cadillac DTS. Looking in the phonebook or online will point you to all the dealerships in your area.
No
The cost to tune-up a 2006 Cadillac DTS engine typically ranges from $200 to $500, depending on the specific services performed and local labor rates. A standard tune-up may include replacing spark plugs, air filters, and fuel filters, as well as performing diagnostic checks. Additional repairs or parts may increase the overall cost. It's advisable to get a quote from a trusted mechanic for a more accurate estimate.
In 2005, the Cadillac DTS had a starting price of around $44,000 for the base model. Depending on the trim level and additional features, prices could go up to approximately $55,000. The DTS was positioned as a luxury sedan, reflecting Cadillac's emphasis on comfort and advanced technology during that time.
tune up
The Battery is under the rear seat in a 2007 Cadillac dts. Remove seat by pulling up the front of the seat till it unlatches. This must be done on both sides. Battery is on passenger side.
Cadillac has never manufactured a car called a GTS. However, the gas tank on a Cadillac DTS is 18 gallons.
The fuel door release latch, on your Cadillac DTS, is located on the floor near the drivers seat. Pull the lever up and the fuel door will open.
there is one under the rear seat and another under the hood up near the fire wall
If you have to ask, you need to call your local Nissan service department and schedule a tune-up.