2004 Cadillac CTS 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

13 Back Up / Reverse Lamp Bulb parts are listed for the 2004 Cadillac CTS, from WAGNER, SYLVANIA, HELLA and 3 other brands. HELLA 3157 carries the "Popular" badge.

The Extended Life section lists 3 options from HELLA, SYLVANIA and WAGNER — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. HELLA 3157LL is listed in this group.

The Extra Bright (improved visibility, but shorter life) section lists 1 option from SYLVANIA — grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. SYLVANIA 3157ST is listed in this group.

In the LED (instant-on, long life, energy-saving) grade, DORMAN, WAGNER and PHILIPS supply 5 parts: grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. A representative part number is DORMAN 3157WSMD.

The Standard Replacement section lists 4 options from HELLA, SYLVANIA, WAGNER and 1 other brand — built to original-equipment specification. HELLA 3157 is listed in this group.

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

10 Brake Light Bulb parts are listed for the 2004 Cadillac CTS, from SYLVANIA, WAGNER, HELLA and 2 other brands. HELLA 3157 carries the "Popular" badge.

The Extended Life section: 3 options from HELLA, SYLVANIA and WAGNER. HELLA 3157LL is listed in this group.

The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 3157ST is listed in this group.

LED (instant-on, long life, energy-saving): 2 parts, from PHILIPS and WAGNER. A representative part number is PHILIPS 3157RLED.

The Standard Replacement section: 4 options from HELLA, WAGNER, ACDELCO and 1 other brand. HELLA 3157 is listed in this group.

This table covers the bulbs in the high-mount stop lamp. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

2 Brake Light Bulb - High Mount parts are listed for the 2004 Cadillac CTS, from HELLA and PHILIPS.

This group includes HELLA 168 and PHILIPS PC168.

This table covers the sockets that hold a Brake Light 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

4 Brake Light Socket parts are listed for the 2004 Cadillac CTS, from STANDARD MOTOR PRODUCTS, DORMAN and GM GENUINE.

This group includes DORMAN 85881, GM GENUINE PT2775 and STANDARD MOTOR PRODUCTS HP4680 and the remaining parts above.

This table covers the bulbs used as daytime running 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

9 Daytime Running Light Bulb parts for the 2004 Cadillac CTS come from 5 brands — SYLVANIA, HELLA, WAGNER and 2 other brands. The "Popular" part is HELLA 3157.

Extended Life: 3 parts, from HELLA, SYLVANIA and WAGNER. A representative part number is HELLA 3157LL.

Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 3157ST.

The LED (instant-on, long life, energy-saving) section: 1 option from PHILIPS. PHILIPS 3157WLED is listed in this group.

Standard Replacement: 4 parts, from HELLA, WAGNER, ACDELCO and 1 other brand. A representative part number is HELLA 3157.

Listed part numbers: HELLA 3157 and HELLA 3157LL, plus the other parts above.

This table covers the sockets that hold a Daytime Running Light 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

4 Daytime Running Light Socket parts for the 2004 Cadillac CTS come from 3 brands — STANDARD MOTOR PRODUCTS, ROSTRA and WELLS.

Part numbers include ROSTRA 610007, STANDARD MOTOR PRODUCTS HP3821 and STANDARD MOTOR PRODUCTS S1022, among others listed above.

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

2 Dome Light Bulb parts are listed for the 2004 Cadillac CTS, from HELLA and PHILIPS.

This group includes HELLA 168 and PHILIPS PC168.

This table covers the bulbs in the fog and driving 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

13 Fog / Driving Lamp Bulb parts for the 2004 Cadillac CTS come from 5 brands — HELLA, SYLVANIA, PHILIPS and 2 other brands. The "Popular" part is HELLA 9005.

In the Blue-Coated (stylish, bright-white look) grade, HELLA supplies 1 part: grouped under the catalog's "Blue-Coated (stylish, bright-white look)" designation — the notes column spells out what sets them apart. A representative part number is HELLA H71071252.

Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 9145ST.

The LED (instant-on, long life, energy-saving) section: 4 options from HELLA, PHILIPS, SYLVANIA and 1 other brand. HELLA 226971561 is listed in this group.

The Reduced Glare (for rain, fog, snow, or rural driving) section lists 1 option from HELLA — grouped under the catalog's "Reduced Glare (for rain, fog, snow, or rural driving)" designation — the notes column spells out what sets them apart. HELLA H71071112 is listed in this group.

Standard Replacement: 6 parts, from HELLA, SYLVANIA, WAGNER and 2 other brands. A representative part number is HELLA 9005.

This table covers the sockets that hold a Fog / Driving 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

This group shows a single part: WELLS 1P3539.

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

37 Headlamp Bulb parts for the 2004 Cadillac CTS come from 9 brands — HELLA, PHILIPS, SYLVANIA and 6 other brands. The "Popular" part is HELLA D1S4300K. Grades run from Blue-Coated (stylish, bright-white look) through Standard Replacement; Standard Replacement is the most populated section, led by HELLA, SYLVANIA, WAGNER and 5 other brands.

This table covers the sockets that hold a headlamp bulb in the housing. 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

23 Headlamp Socket parts for the 2004 Cadillac CTS come from 8 brands — DORMAN, STANDARD MOTOR PRODUCTS, WELLS and 5 other brands. The "Popular" part is ACDELCO LS254.

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 are listed for the 2004 Cadillac CTS, from SYLVANIA, WAGNER and HELLA. HELLA 921LED5K carries the "Popular" badge.

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): 2 parts, from HELLA and SYLVANIA. A representative part number is HELLA 921LED5K.

The Standard Replacement section: 3 options from HELLA, SYLVANIA and WAGNER. HELLA 2825 is listed in this group.

This group includes HELLA 921LED5K, SYLVANIA 2825LL and WAGNER 17177LL and the remaining parts above.

This table covers the bulbs in the map / reading 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 Map / Reading Light Bulb parts are listed for the 2004 Cadillac CTS, from HELLA and PHILIPS.

Listed part numbers: HELLA 168 and PHILIPS PC168.

This table covers the replacement bulbs for the Overhead Console 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

One part is listed for the 2004 Cadillac CTS — ACDELCO 9442441.

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

7 Parking Lamp Bulb parts for the 2004 Cadillac CTS come from 3 brands — SYLVANIA, WAGNER and HELLA. The "Popular" part is SYLVANIA 2825LL.

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: 1 option from SYLVANIA. SYLVANIA 2825SL is listed in this group.

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

This group includes SYLVANIA 2825LL, WAGNER 17177LL and SYLVANIA 2825ST and the remaining parts above.

This table covers the sockets that hold a Side Marker 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

4 Side Marker Lamp Socket parts are listed for the 2004 Cadillac CTS, from GM GENUINE, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand.

This group includes GM GENUINE LS112, ROSTRA 610191 and STANDARD MOTOR PRODUCTS S1728 and the remaining parts 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

17 Side Marker Light Bulb parts are listed for the 2004 Cadillac CTS, from SYLVANIA, WAGNER and HELLA. HELLA 2825 carries the "Popular" badge.

The Extended Life section: 5 options from SYLVANIA, WAGNER and HELLA. HELLA 194LL is listed in this group.

The Extra Bright (improved visibility, but shorter life) section: 2 options from SYLVANIA. SYLVANIA 2825ST is listed in this group.

LED (instant-on, long life, energy-saving): 4 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 194BSL.

The Standard Replacement section: 6 options from HELLA, SYLVANIA and WAGNER. HELLA 2825 is listed in this group.

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

One part is listed for the 2004 Cadillac CTS — PHILIPS 2112.

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

14 Tail Lamp Bulb parts for the 2004 Cadillac CTS come from 6 brands — WAGNER, HELLA, SYLVANIA and 3 other brands. The "Popular" part is HELLA 2825.

Extended Life: 3 parts, from HELLA, SYLVANIA and WAGNER. A representative part number is HELLA 3157LL.

Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 3157ST.

The LED (instant-on, long life, energy-saving) section: 5 options from DORMAN, WAGNER and PHILIPS. DORMAN 3157WSMD is listed in this group.

Standard Replacement: 5 parts, from HELLA, WAGNER, ACDELCO and 1 other brand. A representative part number is HELLA 2825.

This table covers the Tail Lamp Socket / Connector plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

9 Tail Lamp Socket / Connector Plate parts for the 2004 Cadillac CTS come from 7 brands — STANDARD MOTOR PRODUCTS, WELLS, DORMAN and 4 other brands. The "Popular" part is DORMAN 85881.

Part numbers include DORMAN 85881, STANDARD MOTOR PRODUCTS S585 and FAMOUS BRAND PTA1237, among others listed 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

8 Trunk / Cargo Area Light Bulb parts for the 2004 Cadillac CTS come from 5 brands — WAGNER, SYLVANIA, DORMAN and 2 other brands. The "Popular" part is DORMAN 211WHP.

Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 2112LL.

The LED (instant-on, long life, energy-saving) section: 2 options from DORMAN and WAGNER. DORMAN 211WHP is listed in this group.

Standard Replacement: 4 parts, from WAGNER, PHILIPS, PILOT AUTOMOTIVE and 1 other brand. A representative part number is WAGNER 2112.

Part numbers include DORMAN 211WHP and SYLVANIA 2112LL, among others listed above.