2015 Cadillac XTS Electrical Bulb & Socket Parts

This table covers the bulbs in the reverse lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

8 Back Up / Reverse Lamp Bulb parts for the 2015 Cadillac XTS come from 4 brands — SYLVANIA, WAGNER, HELLA and 1 other brand. The "Popular" part is SYLVANIA 921LL. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

In the Extended Life grade, SYLVANIA and WAGNER supply 2 parts: grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. A representative part number is SYLVANIA 921LL.

In the Extra Bright (improved visibility, but shorter life) grade, SYLVANIA supplies 1 part: grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. A representative part number is SYLVANIA 921ST.

The LED (instant-on, long life, energy-saving) section lists 1 option from WAGNER — grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. WAGNER 921WLED is listed in this group.

In the Standard Replacement grade, HELLA, GM GENUINE, SYLVANIA and 1 other brand supply 4 parts: built to original-equipment specification. A representative part number is HELLA 921.

Listed part numbers: SYLVANIA 921LL and SYLVANIA 921ST, plus the other parts above.

This table covers the bulbs in the stop lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

This group shows a single part: PHILIPS 7444NALL.

This table covers the bulbs in the dome lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

This group shows a single part: SYLVANIA 2886XSL.

This table covers the replacement bulbs for the Door Panel Light. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

10 Door Panel Light Bulb parts are listed for the 2015 Cadillac XTS, from SYLVANIA, WAGNER and HELLA. HELLA 921LED5K carries the "Popular" badge. All of them fit every engine offered in the 2015 XTS.

The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 2825LL is listed in this group.

The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 2825ST is listed in this group.

LED (instant-on, long life, energy-saving): 3 parts, from HELLA, SYLVANIA and WAGNER. A representative part number is HELLA 921LED5K.

The Standard Replacement section: 4 options from HELLA, SYLVANIA and WAGNER. HELLA 2825 is listed in this group.

This table covers the bulbs that light the headlamps. Typical signs include a dark lamp, a flicker over bumps, or a bulb that keeps failing on one side. Avoid touching a halogen capsule. Repeated failure in one socket is usually the socket or ground, not the bulb. Read more

8 Headlamp Bulb parts are listed for the 2015 Cadillac XTS, from SYLVANIA, AUTOTECNICA, WAGNER and 4 other brands. AUTOTECNICA D3S carries the "Popular" badge. 6 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: AUTOTECNICA D3S and GM GENUINE 13587843, plus the other parts above.

This table covers the bulbs that light the license plate. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

8 License Plate Lamp Bulb parts for the 2015 Cadillac XTS come from 3 brands — SYLVANIA, WAGNER and HELLA. The "Popular" part is HELLA 921LED5K. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 2825LL.

Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825ST.

The LED (instant-on, long life, energy-saving) section: 2 options from HELLA and SYLVANIA. HELLA 921LED5K is listed in this group.

Standard Replacement: 3 parts, from HELLA, SYLVANIA and WAGNER. A representative part number is HELLA 2825.

Listed part numbers: HELLA 921LED5K, SYLVANIA 2825LL and WAGNER 17177LL, plus the other parts above.

This table covers the bulbs in the parking lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

6 Parking Lamp Bulb parts are listed for the 2015 Cadillac XTS, from WAGNER, HELLA, PHILIPS and 1 other brand. PHILIPS 7444NALL carries the "Popular" badge. All of them fit every engine offered in the 2015 XTS.

The Extended Life section: 3 options from PHILIPS, SYLVANIA and WAGNER. PHILIPS 7444NALL is listed in this group.

The Standard Replacement section: 3 options from HELLA and WAGNER. HELLA 7443A is listed in this group.

Part numbers include PHILIPS 7444NALL, among others listed above.

This table covers the bulbs in the side-marker lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

12 Side Marker Light Bulb parts for the 2015 Cadillac XTS come from 4 brands — SYLVANIA, WAGNER, HELLA and 1 other brand. The "Popular" part is HELLA 194. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

Extended Life: 3 parts, from HELLA, SYLVANIA and WAGNER. A representative part number is HELLA 194LL.

Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 194ST.

The LED (instant-on, long life, energy-saving) section: 3 options from SYLVANIA and WAGNER. SYLVANIA 194BSL is listed in this group.

Standard Replacement: 5 parts, from GM GENUINE, HELLA, SYLVANIA and 1 other brand. A representative part number is HELLA 194.

This table covers the bulbs in the step and courtesy lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

2 Step / Courtesy Light Bulb parts for the 2015 Cadillac XTS come from 2 brands — GM GENUINE and PEAK. 1 part fits every engine; the other 1 is engine-specific.

This group includes GM GENUINE 13500832 and PEAK 2825.

This table covers the bulbs in the tail lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

4 Tail Lamp Bulb parts are listed for the 2015 Cadillac XTS, from PHILIPS, GM GENUINE, HELLA and 1 other brand. All of them fit every engine offered in the 2015 XTS.

The Extended Life section: 1 option from PHILIPS. PHILIPS 7444NALL is listed in this group.

The Standard Replacement section: 2 options from GM GENUINE and HELLA. GM GENUINE 84198978 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Listed part numbers: PHILIPS 7444NALL, GM GENUINE 84198978 and HELLA 2825, plus the other parts above.

This table covers the bulbs in the trunk or cargo-area lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

2 Trunk / Cargo Area Light Bulb parts are listed for the 2015 Cadillac XTS, from PEAK and SYLVANIA. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include PEAK 168 and SYLVANIA 175SL.

This table covers the bulbs in the turn-signal lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs. Read more

7 Turn Signal Lamp Bulb parts for the 2015 Cadillac XTS come from 5 brands — WAGNER, HELLA, PHILIPS and 2 other brands. The "Popular" part is PHILIPS 7444NALL. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

Extended Life: 3 parts, from PHILIPS, SYLVANIA and WAGNER. A representative part number is PHILIPS 7444NALL.

Standard Replacement: 4 parts, from HELLA, GM GENUINE and WAGNER. A representative part number is GM GENUINE 13579188.

Part numbers include PHILIPS 7444NALL, among others listed above.

This table covers the sockets that hold a Turn Signal Lamp bulb. Typical signs include a flicker over bumps, melted plastic, or a bulb that will not stay seated. Dielectric grease on the contacts slows corrosion. Do not force a bulb into a heat-damaged socket. Read more

2 Turn Signal Lamp Socket parts for the 2015 Cadillac XTS come from GM GENUINE. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

Listed part numbers: GM GENUINE 84987048 and GM GENUINE LS292.