13 Electrical bulb & socket parts are listed for the 2021 GMC Savana 4500, in 10 part types, covering the 6.6L V8 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 GMC Savana 4500, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 6 parts of the 13 listed are Headlamp Bulb (2 parts), Parking Lamp Socket (2 parts) and Side Marker Light Bulb (2 parts). The other 7 part types cover the remaining 7 parts.
Every part on this page is matched to the 6.6L V8 — the only engine offered in the 2021 GMC Savana 4500.
The most listed brands for 2021 GMC Savana 4500 electrical bulb & socket parts are GM GENUINE (11 parts), STANDARD MOTOR PRODUCTS (1 part) and ACDELCO (1 part).
Each part number listed for the 2021 GMC Savana 4500 opens a page with every vehicle that part fits.
Dome Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | L2112 | 🇺🇸 US 🇨🇦 CA | Bulb Base Type: FestoonBulb Technology: Incandescent | View on Amazon |
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.
One part is listed for the 2021 GMC Savana 4500 — GM GENUINE L2112.
Engine Compartment Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 578 | 🇺🇸 US 🇨🇦 CA | Under Hood Bulb | View on Amazon |
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.
This group shows a single part: GM GENUINE 578.
Headlamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 9006 | 🇺🇸 US 🇨🇦 CA | 2 Prong Connector | View on Amazon |
| GM GENUINE | 9005 | 🇺🇸 US 🇨🇦 CA | High Beamwith Trade # 9005 | View on Amazon |
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.
2 Headlamp Bulb parts for the 2021 GMC Savana 4500 come from GM GENUINE.
This group includes GM GENUINE 9006 and GM GENUINE 9005.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 86326356 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
This group shows a single part: GM GENUINE 86326356.
Parking Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | LS116 | 🇺🇸 US 🇨🇦 CA | 1LH, 1RH | View on Amazon |
| STANDARD MOTOR PRODUCTS | S1735 | 🇺🇸 US 🇨🇦 CA | Connector Requiredwith 3 Blade Terminals | View on Amazon |
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.
2 Parking Lamp Socket parts for the 2021 GMC Savana 4500 come from 2 brands — GM GENUINE and STANDARD MOTOR PRODUCTS.
Part numbers include GM GENUINE LS116 and STANDARD MOTOR PRODUCTS S1735.
Side Marker Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | LS117 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
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.
One part is listed for the 2021 GMC Savana 4500 — GM GENUINE LS117.
Side Marker Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13503401 | 🇺🇸 US 🇨🇦 CA | FrontT3-1/4 MINIATURE WEDGE BASE | View on Amazon |
| GM GENUINE | 13503359 | 🇺🇸 US 🇨🇦 CA | FrontSIDE MARKER SOCKET | View on Amazon |
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.
GM GENUINE supplies both parts for the 2021 GMC Savana 4500.
This group includes GM GENUINE 13503401 and GM GENUINE 13503359.
Step / Courtesy Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 578 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
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.
One part is listed for the 2021 GMC Savana 4500 — GM GENUINE 578.
Turn Signal Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 3157KX | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
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.
One part is listed for the 2021 GMC Savana 4500 — ACDELCO 3157KX.
Turn Signal Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 86326355 | 🇺🇸 US 🇨🇦 CA | Fits Front Right | View on Amazon |
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.
One part is listed for the 2021 GMC Savana 4500 — GM GENUINE 86326355.
Buying Electrical Bulb & Socket Parts for a 2021 GMC Savana 4500
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Confirm you have the 6.6L V8 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Headlamp Bulb and Parking Lamp Socket .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2021 GMC Savana 4500?
Our catalog currently lists 13 electrical bulb & socket parts for the 2021 GMC Savana 4500 across 10 subcategories and 3 brands, covering the 6.6L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical bulb & socket problems on a 2021 GMC Savana 4500?
Common symptoms include a lamp that flickers over bumps, melted or discolored socket plastic, or bulbs that keep failing early on one side. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 GMC Savana 4500 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 GMC Savana 4500?
Every part on this page is matched to the 6.6L V8 engine. Then repeated bulb failure in one position usually means a socket or ground problem, not bad bulbs — replace the socket rather than chase it. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 GMC Savana 4500
Electrical Bulb & Socket Parts for Other GMC Savana 4500 Years
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