2005 Cadillac STS Electrical Bulb & Socket Parts

This table covers the sockets that hold a Ash Tray 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

2 Ash Tray Light Socket parts are listed for the 2005 Cadillac STS, from GM GENUINE and HOLSTEIN.

This group includes GM GENUINE PT3847 and HOLSTEIN 2HAR0023.

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

11 Back Up / Reverse Lamp Bulb parts for the 2005 Cadillac STS come from 7 brands — SYLVANIA, HELLA, DORMAN and 4 other brands. The "Popular" part is SYLVANIA 3157LL.

In the Extended Life grade, SYLVANIA and HELLA 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 3157LL.

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 3157ST.

The LED (instant-on, long life, energy-saving) section lists 3 options from DORMAN and PHILIPS — grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. DORMAN 3157WSMD is listed in this group.

In the Standard Replacement grade, HELLA, SYLVANIA, ACDELCO and 2 other brands supply 5 parts: built to original-equipment specification. A representative part number is HELLA 3157.

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 for the 2005 Cadillac STS come from 2 brands — HELLA and PHILIPS.

Listed part numbers: HELLA 168 and PHILIPS PC168.

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

6 Daytime Running Light Bulb parts are listed for the 2005 Cadillac STS, from PHILIPS, SYLVANIA, WAGNER and 3 other brands. PHILIPS 3757NALL carries the "Popular" badge.

The Extended Life section: 3 options from PHILIPS, SYLVANIA and WAGNER. PHILIPS 3757NALL is listed in this group.

The Standard Replacement section: 3 options from HELLA, GM GENUINE and PILOT AUTOMOTIVE. HELLA 3757A is listed in this group.

Part numbers include PHILIPS 3757NALL and SYLVANIA 3757ALL, 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

6 Dome Light Bulb parts for the 2005 Cadillac STS come from 4 brands — SYLVANIA, WAGNER, DORMAN and 1 other brand. The "Popular" part is DORMAN 212WSMD.

Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 2122LL.

The LED (instant-on, long life, energy-saving) section: 1 option from DORMAN. DORMAN 212WSMD is listed in this group.

Standard Replacement: 3 parts, from PHILIPS, SYLVANIA and WAGNER. A representative part number is PHILIPS 2122.

Part numbers include DORMAN 212WSMD and SYLVANIA 2122LL, among others listed above.

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

29 Fog / Driving Lamp Bulb parts are listed for the 2005 Cadillac STS, from HELLA, WAGNER, PHILIPS and 2 other brands. PILOT AUTOMOTIVE WIH3BP carries the "Popular" badge. Grades run from Extended Life through Standard Replacement; Extra Bright (improved visibility, but shorter life) is the most populated section, led by HELLA, PHILIPS, WAGNER and 2 other brands.

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

4 Fog / Driving Lamp Socket parts are listed for the 2005 Cadillac STS, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS S2611, STANDARD MOTOR PRODUCTS LWH110 and WALKER PRODUCTS 2701120, among others listed above.

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

40 Headlamp Bulb parts are listed for the 2005 Cadillac STS, from SYLVANIA, HELLA, WAGNER and 4 other brands. SYLVANIA H11LL carries the "Popular" badge. Grades run from Extended Life through Standard Replacement; Extra Bright (improved visibility, but shorter life) is the most populated section, led by SYLVANIA, WAGNER and HELLA.

This table covers the Headlamp Bulb caps. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

One part is listed for the 2005 Cadillac STS — GM GENUINE 25700262.

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

26 Headlamp Socket parts are listed for the 2005 Cadillac STS, from DORMAN, STANDARD MOTOR PRODUCTS, WELLS and 6 other brands. DORMAN 84783 carries the "Popular" badge. The notes list position, dimensions and spec qualifiers wherever the manufacturer distinguishes between variants.

This table covers the LED Bulb adapters. Read more

WAGNER supplies the 3 LED Bulb Adapter parts for the 2005 Cadillac STS.

Part numbers include WAGNER CB900590069012, WAGNER CBH8H11H16 and WAGNER CBH1H3.

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

10 License Plate Lamp Bulb parts for the 2005 Cadillac STS come from 4 brands — SYLVANIA, HELLA, WAGNER and 1 other brand. The "Popular" part is HELLA 921LED5K.

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: 5 parts, from HELLA, GM GENUINE, SYLVANIA and 1 other brand. A representative part number is HELLA 2825.

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 for the 2005 Cadillac STS come from 2 brands — ACDELCO and PHILIPS.

Listed part numbers: ACDELCO 9442441 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

This group shows a single part: 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

5 Parking Lamp Bulb parts are listed for the 2005 Cadillac STS, from PHILIPS, SYLVANIA, WAGNER and 2 other brands. PHILIPS 3757NALL carries the "Popular" badge.

The Extended Life section: 3 options from PHILIPS, SYLVANIA and WAGNER. PHILIPS 3757NALL is listed in this group.

The Standard Replacement section: 2 options from GM GENUINE and HELLA. GM GENUINE W5WB50X2 is listed in this group.

Listed part numbers: PHILIPS 3757NALL and SYLVANIA 3757ALL, plus the other 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

5 Side Marker Lamp Socket parts for the 2005 Cadillac STS come from 4 brands — STANDARD MOTOR PRODUCTS, ACDELCO, ROSTRA and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS S789.

Listed part numbers: STANDARD MOTOR PRODUCTS S789, ACDELCO LS176 and ROSTRA 610191, plus the other 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

19 Side Marker Light Bulb parts for the 2005 Cadillac STS come from 4 brands — SYLVANIA, WAGNER, HELLA and 1 other brand. The "Popular" part is HELLA 2825.

Extended Life: 5 parts, from SYLVANIA, WAGNER and HELLA. A representative part number is HELLA 194LL.

Extra Bright (improved visibility, but shorter life): 2 parts, from SYLVANIA. A representative part number is SYLVANIA 2825ST.

The LED (instant-on, long life, energy-saving) section: 4 options from SYLVANIA and WAGNER. SYLVANIA 194BSL is listed in this group.

Standard Replacement: 8 parts, from HELLA, SYLVANIA, WAGNER and 1 other brand. A representative part number is HELLA 2825.

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

7 Step / Courtesy Light Bulb parts for the 2005 Cadillac STS come from 5 brands — SYLVANIA, WAGNER, PHILIPS and 2 other brands. The "Popular" part is SYLVANIA 906LL.

Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 906LL.

Standard Replacement: 5 parts, from PHILIPS, ACDELCO, GM GENUINE and 2 other brands. A representative part number is PHILIPS 906.

Listed part numbers: SYLVANIA 906LL and PHILIPS 906, plus the other parts above.

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

One part is listed for the 2005 Cadillac STS — HELLA 2825.

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

One part is listed for the 2005 Cadillac STS — PHILIPS 2112.

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

5 Turn Signal Lamp Bulb parts for the 2005 Cadillac STS come from 5 brands — PHILIPS, SYLVANIA, WAGNER and 2 other brands. The "Popular" part is PHILIPS 3757NALL.

Extended Life: 3 parts, from PHILIPS, SYLVANIA and WAGNER. A representative part number is PHILIPS 3757NALL.

Standard Replacement: 2 parts, from HELLA and PILOT AUTOMOTIVE. A representative part number is HELLA 3757A.

Listed part numbers: PHILIPS 3757NALL and SYLVANIA 3757ALL, plus the other parts above.