The 2021 Cadillac Escalade has 5 electrical bulb & socket parts with verified fitment on this page — 4 part types and 1 brand, covering both the 3.0L L6 DIESEL Turbocharged and the 6.2L V8. Each part includes a manufacturer part number and application notes.
On the 2021 Cadillac Escalade, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. Most of the listed parts are Brake Light Bulb (2 parts), Step / Courtesy Light Bulb (1 part) and Tail Lamp Socket / Connector Plate (1 part). The other 1 part type covers the remaining 1 part.
The 2021 Cadillac Escalade was sold with both the 3.0L L6 DIESEL Turbocharged and the 6.2L V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
Every electrical bulb & socket part listed for the 2021 Cadillac Escalade comes from GM GENUINE.
Each part number listed for the 2021 Cadillac Escalade opens a page with every vehicle that part fits.
Brake Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.2L V8 | 13591403 | 🇺🇸 US 🇨🇦 CA | CLEAR GLASS BULB | View on Amazon |
| GM GENUINE Fits: 6.2L V8 | 13579190 | 🇺🇸 US 🇨🇦 CA | Clear Bulb | View on Amazon |
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.
2 Brake Light Bulb parts for the 2021 Cadillac Escalade come from GM GENUINE.
Part numbers include GM GENUINE 13591403 and GM GENUINE 13579190.
Step / Courtesy Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.2L V8 | 85051907 | 🇺🇸 US 🇨🇦 CA | Cylinder Type Bulb: No | 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.
This group shows a single part: GM GENUINE 85051907.
Tail Lamp Socket / Connector Plate
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.2L V8 | 84972809 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
One part is listed for the 2021 Cadillac Escalade — GM GENUINE 84972809.
Trunk / Cargo Area Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.2L V8 | 85051912 | 🇺🇸 US 🇨🇦 CA | Cylinder Type Bulb: No | View on Amazon |
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.
One part is listed for the 2021 Cadillac Escalade — GM GENUINE 85051912.
Buying Electrical Bulb & Socket Parts for a 2021 Cadillac Escalade
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Match the engine first. Every electrical bulb & socket part here is engine-specific; each row shows which engine(s) it fits.
- 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: Brake Light Bulb and Step / Courtesy Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2021 Cadillac Escalade?
Our catalog currently lists 5 electrical bulb & socket parts for the 2021 Cadillac Escalade across 4 subcategories and 1 brand, covering both the 3.0L L6 DIESEL Turbocharged and the 6.2L V8. Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2021 Cadillac Escalade engines?
Yes. Every electrical bulb & socket part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical bulb & socket problems on a 2021 Cadillac Escalade?
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 Cadillac Escalade 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 Cadillac Escalade?
First match the engine — each row shows which engine(s) the part fits. 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 Cadillac Escalade
Electrical Bulb & Socket Parts for Other Cadillac Escalade Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.