This page lists 16 ignition parts for the 2021 Chevrolet Express 2500, across 7 part types, covering all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8). Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Chevrolet Express 2500, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. 12 parts of the 16 listed are Camshaft Position Sensor (6 parts), Crankshaft Position Sensor (4 parts) and Diesel Glow Plug (2 parts). The other 4 part types cover the remaining 4 parts.
The 2021 Chevrolet Express 2500 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Chevrolet Express 2500 ignition parts are GM GENUINE (6 parts), STANDARD MOTOR PRODUCTS (3 parts) and WALKER PRODUCTS (2 parts), plus 4 more brands. Quality grades include Standard Replacement and Economy.
2 parts on this 2021 Chevrolet Express 2500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GM GENUINE 24591946 (Camshaft Position Sensor) and WALKER PRODUCTS 2351883 (Camshaft Position Sensor). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 2.8L L4 DIESEL Turbocharged | 2CAM0580 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO Fits: 2.8L L4 DIESEL Turbocharged | 4E1258 | 🇺🇸 US 🇨🇦 CA | Cam position sensor | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 2.8L L4 DIESEL Turbocharged | 24591946 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Popular Fits: 2.8L L4 DIESEL Turbocharged | 2351883 | 🇺🇸 US 🇨🇦 CA | Includes Bolt and SealSensor Only | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.8L L4 DIESEL Turbocharged | PC1103 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.8L L4 DIESEL Turbocharged | 5S15063 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
6 Camshaft Position Sensor parts are listed for the 2021 Chevrolet Express 2500, from HOLSTEIN, PRENCO, GM GENUINE and 3 other brands. GM GENUINE 24591946 carries the "Popular" badge.
In the Economy grade, HOLSTEIN and PRENCO supply 2 parts: the catalog's value-priced group. A representative part number is HOLSTEIN 2CAM0580.
The Standard Replacement section lists 4 options from GM GENUINE, WALKER PRODUCTS, STANDARD MOTOR PRODUCTS and 1 other brand — built to original-equipment specification. GM GENUINE 24591946 is listed in this group.
Part numbers include GM GENUINE 24591946, HOLSTEIN 2CAM0580 and PRENCO 4E1258, among others listed above.
Crankshaft Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.8L L4 DIESEL Turbocharged | 55593759 | 🇺🇸 US 🇨🇦 CA | GM Original Equipment | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.8L L4 DIESEL Turbocharged | PC1136 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Fits: 2.8L L4 DIESEL Turbocharged | 2351890 | 🇺🇸 US 🇨🇦 CA | Includes BoltSensor Only | View on Amazon |
| WELLS Fits: 2.8L L4 DIESEL Turbocharged | 5S16773 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
4 Crankshaft Position Sensor parts are listed for the 2021 Chevrolet Express 2500, from ACDELCO, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 1 other brand.
Part numbers include ACDELCO 55593759, STANDARD MOTOR PRODUCTS PC1136 and WALKER PRODUCTS 2351890, among others listed above.
Crankshaft Position Sensor Bracket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.8L L4 DIESEL Turbocharged | 55598706 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the brackets that mount the Crankshaft Position Sensor. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners.
One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 55598706.
Diesel Glow Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.8L L4 DIESEL Turbocharged | 16G | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.8L L4 DIESEL Turbocharged | GP126 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Diesel Glow plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
2 Diesel Glow Plug parts for the 2021 Chevrolet Express 2500 come from 2 brands — GM GENUINE and STANDARD MOTOR PRODUCTS.
Part numbers include GM GENUINE 16G and STANDARD MOTOR PRODUCTS GP126.
Ignition Lock Cylinder
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.8L L4 DIESEL Turbocharged | 84668679 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the lock cylinders in the ignition switch.
One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 84668679.
Ignition Lock Housing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.8L L4 DIESEL Turbocharged | 84646279 | 🇺🇸 US 🇨🇦 CA | Fits Push to Turn Design with Lock Bolt HoleDriver Side Inflation Restraint System (AJ3), Driver and Passenger Front Seat Inflatable Restraint System (AK5), 8600 LBS / 3900 KG Gross Vehicle Weight (C6P), Active Brake Control (JL4), Tilt Steering Column (9J6) | View on Amazon |
This table covers the Ignition Lock housings.
This group shows a single part: GM GENUINE 84646279.
Spark Plug Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.8L L4 DIESEL Turbocharged | 12645141 | 🇺🇸 US 🇨🇦 CA | Material: Rubber | View on Amazon |
This table covers the seals at the Spark Plug Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 12645141.
Buying Ignition Parts for a 2021 Chevrolet Express 2500
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Match the engine first. Every ignition 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 plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Camshaft Position Sensor and Crankshaft Position Sensor .
Frequently Asked Questions
How many ignition parts fit the 2021 Chevrolet Express 2500?
Our catalog currently lists 16 ignition parts for the 2021 Chevrolet Express 2500 across 7 subcategories and 7 brands, covering all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8). Each part is matched to the engine(s) it fits.
Do ignition parts differ between 2021 Chevrolet Express 2500 engines?
Yes. Every ignition 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 ignition problems on a 2021 Chevrolet Express 2500?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. 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 plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
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 Chevrolet Express 2500 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 Chevrolet Express 2500?
First match the engine — each row shows which engine(s) the part fits. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Chevrolet Express 2500
Ignition Parts for Other Chevrolet Express 2500 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.