2021 Chevrolet Express 3500 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

One part is listed for the 2021 Chevrolet Express 3500 — PHILIPS 3157WLED.

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

5 Brake Light Bulb parts are listed for the 2021 Chevrolet Express 3500, from SYLVANIA, PHILIPS and GM GENUINE. SYLVANIA 3157 carries the "Popular" badge.

The Extended Life section lists 1 option from SYLVANIA — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. SYLVANIA 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, PHILIPS supplies 1 part: 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 PHILIPS 3157RLED.

The Standard Replacement section lists 2 options from SYLVANIA and GM GENUINE — built to original-equipment specification. SYLVANIA 3157 is listed in this group.

Part numbers include SYLVANIA 3157, SYLVANIA 3157LL and SYLVANIA 3157ST, among others listed above.

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

3 Brake Light Bulb - High Mount parts are listed for the 2021 Chevrolet Express 3500, from SYLVANIA and GM GENUINE.

The Extended Life section: 1 option from SYLVANIA. SYLVANIA 912LL is listed in this group.

The Standard Replacement section: 2 options from GM GENUINE and SYLVANIA. GM GENUINE L912 is listed in this group.

Part numbers include SYLVANIA 912LL, GM GENUINE L912 and SYLVANIA 912.

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 are listed for the 2021 Chevrolet Express 3500, from SYLVANIA, PHILIPS and GM GENUINE. PHILIPS 578LL carries the "Popular" badge.

The Extended Life section: 2 options from PHILIPS and SYLVANIA. PHILIPS 578LL is listed in this group.

LED (instant-on, long life, energy-saving): 2 parts, from SYLVANIA. A representative part number is SYLVANIA 2112LED.

The Standard Replacement section: 2 options from SYLVANIA and GM GENUINE. SYLVANIA 2112 is listed in this group.

This group includes PHILIPS 578LL, SYLVANIA 2112LL and SYLVANIA 2112LED and the remaining parts above.

This table covers the replacement bulbs for the Engine Compartment 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: GM GENUINE 578.

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

15 Headlamp Bulb parts for the 2021 Chevrolet Express 3500 come from 2 brands — SYLVANIA and GM GENUINE. The "Popular" part is SYLVANIA 9006SU.

Extended Life: 1 part, from SYLVANIA. A representative part number is SYLVANIA 9005LL.

Extra Bright (improved visibility, but shorter life): 8 parts, from SYLVANIA. A representative part number is SYLVANIA 9006SU.

The LED (instant-on, long life, energy-saving) section: 2 options from SYLVANIA. SYLVANIA 9006SL is listed in this group.

Standard Replacement: 4 parts, from SYLVANIA and GM GENUINE. A representative part number is SYLVANIA 9005.

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

This group shows a single part: GM GENUINE 86326356.

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

7 License Plate Lamp Bulb parts are listed for the 2021 Chevrolet Express 3500, from SYLVANIA and GM GENUINE. SYLVANIA 194LL carries the "Popular" badge.

The Extended Life section: 1 option from SYLVANIA. SYLVANIA 194LL is listed in this group.

The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 194ST is listed in this group.

LED (instant-on, long life, energy-saving): 2 parts, from SYLVANIA. A representative part number is SYLVANIA 194BSL.

The Standard Replacement section: 3 options from GM GENUINE and SYLVANIA. SYLVANIA 194 is listed in this group.

This group includes SYLVANIA 194LL, SYLVANIA 194ST and SYLVANIA 194BSL 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

SYLVANIA supplies the 6 Map / Reading Light Bulb parts for the 2021 Chevrolet Express 3500. SYLVANIA 578LL carries the "Popular" badge.

The Extended Life section: 1 option from SYLVANIA. SYLVANIA 578LL is listed in this group.

LED (instant-on, long life, energy-saving): 4 parts, from SYLVANIA. A representative part number is SYLVANIA 578SL.

The Standard Replacement section: 1 option from SYLVANIA. SYLVANIA 578 is listed in this group.

This group includes SYLVANIA 578LL, SYLVANIA 578SL and SYLVANIA 578BLED and the remaining parts above.

This table covers the sockets that hold a Parking 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 Parking Lamp Socket parts for the 2021 Chevrolet Express 3500 come from 2 brands — GM GENUINE and STANDARD MOTOR PRODUCTS.

Part numbers include GM GENUINE LS116 and STANDARD MOTOR PRODUCTS S1735.

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

2 Side Marker Lamp Socket parts are listed for the 2021 Chevrolet Express 3500, from GM GENUINE and STANDARD MOTOR PRODUCTS.

Listed part numbers: GM GENUINE LS117 and STANDARD MOTOR PRODUCTS S1472.

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

7 Side Marker Light Bulb parts are listed for the 2021 Chevrolet Express 3500, from SYLVANIA and GM GENUINE. SYLVANIA 194LL carries the "Popular" badge.

The Extended Life section: 1 option from SYLVANIA. SYLVANIA 194LL is listed in this group.

The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 194ST is listed in this group.

LED (instant-on, long life, energy-saving): 2 parts, from SYLVANIA. A representative part number is SYLVANIA 194BSL.

The Standard Replacement section: 3 options from GM GENUINE and SYLVANIA. SYLVANIA 194 is listed in this group.

Part numbers include SYLVANIA 194LL, SYLVANIA 194ST and SYLVANIA 194BSL, among others listed above.

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 are listed for the 2021 Chevrolet Express 3500, from GM GENUINE and PHILIPS.

Listed part numbers: GM GENUINE 578 and PHILIPS 2112.

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

This group shows a single part: GM GENUINE 84227908.

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

4 Turn Signal Lamp Bulb parts are listed for the 2021 Chevrolet Express 3500, from SYLVANIA and ACDELCO.

The Extended Life section: 1 option from SYLVANIA. SYLVANIA 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.

The Standard Replacement section: 2 options from ACDELCO and SYLVANIA. ACDELCO 3157KX is listed in this group.

Part numbers include SYLVANIA 3157LL, SYLVANIA 3157ST and ACDELCO 3157KX, 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 are listed for the 2021 Chevrolet Express 3500, from GM GENUINE and WELLS.

Part numbers include GM GENUINE 86326355 and WELLS 1P1722.