Most Replaced Parts on the 1st Gen Cadillac XTS (2013-2019)

The XTS 1st Gen ran from 2013-2019 and is the livery favorite. After enough of these come across the parts counter you start to see the same short list of components over and over. Here is what owners of this generation actually end up buying, and what to know before you order.

Heating and Air Conditioning

The usual tell is air that only blows on the highest fan setting. Catch it early and it is a parts bill. Ignore it and it becomes a parts and labor bill.

Common parts in this group: cabin air filters, blower motors, blower motor resistors, A/C compressors, condensers.

Worth knowing: Blend door actuators are calibrated position devices, and the module learns their travel; generic units frequently will not calibrate.

Filters and Fluids

The usual tell is a diesel that derates or throws a fuel pressure code on a neglected filter. The number in the manual assumes conditions most people in North Texas do not have.

Common parts in this group: oil filters, air filters, cabin air filters, fuel filters, transmission filters.

Worth knowing: Dexos1 and dexos2 licensing exists because GM engines have specific requirements, and warranty language references it directly.

Suspension

The usual tell is a clunk over expansion joints that you feel in the floor more than you hear. Worth checking at the same time you rotate tires, since the wheel is already off.

Common parts in this group: shocks, struts, control arms, ball joints, sway bar links.

Worth knowing: Vehicles with adaptive or air suspension talk to the module, and non-OEM parts often will not report correctly.

Interior

The usual tell is a console lid hinge that has cracked at the pivot. Mileage is a rough guide here. Load, heat and road surface matter more.

Common parts in this group: floor liners, carpet floor mats, console lids, seat covers, shift knobs.

Worth knowing: GM Accessories liners are laser-measured to the specific floor pan and retain the factory anchor posts, which is a safety item.

Ignition and Engine Management

The usual tell is a misfire code that follows the coil when you swap it to another cylinder. The number in the manual assumes conditions most people in North Texas do not have.

Common parts in this group: spark plugs, ignition coils, camshaft position sensors, crankshaft position sensors, oxygen sensors.

Worth knowing: Coil primary resistance affects dwell, and the ECM is calibrated for the factory value.

Brakes

The usual tell is a pedal that sits lower than it used to, or sinks slowly at a stoplight. Heat is the accelerant on this one, which is why it shows up faster here than up north.

Common parts in this group: brake pads, brake rotors, brake calipers, brake hoses, wheel speed sensors.

Worth knowing: Pad compound changes brake torque, and brake torque is one of the inputs the stability control system assumes it knows.

Before You Order

Have the VIN ready. On a XTS the same model year can carry two or three different engines and several suspension packages.
Check the SPID label in the glove box or console for your RPO codes.
Front and rear parts are rarely the same number, even when they look identical.
If the part is electrical, confirm the fit before you order. Electrical parts are not returnable at any GM dealer, including us.

Genuine GM parts, dealer priced, shipped from Dallas. our Cadillac OEM parts catalog has the full catalog, or search for XTS parts.