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2021 Chevrolet Express 2500

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 Express 2500.

The 2021 Chevrolet Express 2500 calls for 6.0 quarts of 5W-30 engine oil and has accumulated 13 owner complaints, with the Fuel/Propulsion System standing as the top complaint area alongside 2 recalls. Measured against the model’s 1998–2007 complaint history—a period whose ceiling was 13 complaints in 2006 and whose floor was 2 in 2000—that 2021 total ties the prior peak. That positioning places this model year at the top of the observed range rather than near the bottom, meaning it matches the highest complaint count recorded across the dataset.

Model year2025 2024 2023 2022 2021 2020 2019

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity6.0 qtOEM · verified

Engine oil type5W-30OEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 78 · 600 CCA battery, OE oil filter 12731742. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 78 · 600 CCAOEM · verified

Tire sizeLT245/75R16/E 120/116SOEM · verified

Wheel / rim6.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	12731742 alt 24585238
Engine air filter	84612001 alt 84373974
Fuel filter	84428486
Spark plug	12622441
Battery	88866306 alt 88866305
Front wiper blades	15214346
Serpentine belt	12679333 alt 12662028
Thermostat	89018168 alt 12587397

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length	244.1 in
Overall width	79.5 in
Overall height	81.9 in
Wheelbase	155.1 in
Curb weight	5505 lb
Track (front / rear)	68.1 / 67.7 in
Weight distribution (front / rear)	53/47

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 6.0 qt of 5W-30 engine oil, Dot 3 brake fluid. The firing order is 1-8-7-2-6-5-4-3.

Lubricants & capacities

Automatic Transmission Fluid	ATF
Automatic Transmission Fluid Capacity	7.4 qt
Automatic Transmission Fluid	ATF
Automatic Transmission Fluid Capacity	6.0 qt
Brake Fluid	Dot 3
Brake Fluid Capacity	2.1 pt
Brake Fluid	Dot 3
Brake Fluid Capacity	2.1 pt

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)	18.0 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)	18.0 ft-lbs
Crankshaft Position (CKP) Sensor Bolt(s)	3.66 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)	8.08 ft-lbs
Crankshaft Pulley and/or Damper Bolts	24.0 ft-lbs
Engine Coolant Temperature (ECT) Sensor Bolt(s)	11.0 ft-lbs
Engine Coolant Temperature (ECT) Sensor Bolt(s)	15.0 ft-lbs
Oxygen (O2S) Sensor Bolt(s)	31.0 ft-lbs

Chassis torques

Automatic Transmission Drain Plug	6 Speed Transmission: 6.6 ft-lbs
Automatic Transmission Drain Plug	8 Speed Transmission: 6.6 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Cylinder Firing Order	1-6-5-4-3-2
Cylinder Firing Order	1-8-7-2-6-5-4-3
Spark Plug Manufacturer	AC Delco
Spark Plug Gap	.037-.043 in
Spark Plug Torque	15 ft-lbs

Battery & A/C

Refrigerant	R134a
Oil Group	PAG
Standard BCI Group Number	78
Standard BCI Cranking Performance	600 cca
Standard BCI Group Number	Equipped with 2 batteries: 78
Standard BCI Cranking Performance	770 cca
Standard BCI Group Number	78
Standard BCI Cranking Performance	600 cca

Service checks

Key ON Engine OFF (KOEO)

60.0-80.0

Brakes

Minimum Pad Thickness	Front: 0.079
Minimum Shoe Thickness	Drum Brake: 0.063" in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages

22.0 ft. lbs., Step 2: 40°

22 ft. lbs

Connecting Rod (Large End) Bearings — tightening sequence 1 stages

15.0 ft. lbs., Step 2: 85°

15 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

Take old crankshaft balancer bolt and tighten to 240.0 ft. lbs., Step 2: Remove the old crankshaft balancer bolt and throw away., Step 3: Recess the nose of the crankshaft into the balancer bore: 0.94-0.176", Step 4: Use new crankshaft bolt: 110.0 ft. lbs., Step 5: Loosen 360°, Step 6: 59.0 ft. lbs. Step 7: Bolt with rotating washer: 200° or Bolt that has a flanged head: 125°

240 ft. lbs

Cylinder Head — tightening sequence 1 stages

59.0 ft. lbs., Step 2: 90°, Step 3: 90°

59 ft. lbs

Flex or Driveplate Bolts — tightening sequence 1 stages

11.0 ft. lbs., Step 2: 22.0 ft. lbs., Step 3: 45°

11 ft. lbs

Flex or Driveplate Bolts — tightening sequence 1 stages

37.0 ft. lbs., Step 2: Loosen 90°, Step 3: 18.0 ft. lbs., Step 4: 60°

37 ft. lbs

Engine Flywheel Bolts — tightening sequence 1 stages

37.0 ft. lbs., Step 2: Loosen 90°, Step 3: 18.0 ft. lbs., Step 4: 60°

37 ft. lbs

Engine Flywheel Bolts — tightening sequence 1 stages

11.0 ft. lbs., Step 2: 22.0 ft. lbs., Step 3: 30°

11 ft. lbs

Intake Manifold to Engine Bolts — tightening sequence 1 stages

Bolts 1-6

3.7 ft. lbs

Intake Manifold to Engine Bolts — tightening sequence 1 stages

3.7 ft. lbs., Step 2: 7.4

3.7 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 97,500 mi.

Every 7,500 mi	Accelerator Pedal (inspect) · Body Latches, Locks & Hinges (lubricate) · Brake Shift Interlock Solenoid (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Engine Coolant System (inspect fluid level)
Every 15,000 mi	Windshield Wiper Blade (replace)
Every 30,000 mi	Fuel Filter (replace)
Every 45,000 mi	Engine Air Filter Element (replace) · Fuel Evaporative Emission Control System (inspect)
Every 97,500 mi	Spark Plug Wires (inspect) · Spark Plugs (replace)
At 150,000 mi	Accessory Drive Belt (inspect) · Timing Belt (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The provided federal record establishes a historical baseline from 1998 to 2007 where Technical Service Bulletins escalated to 194 by 2007, while annual complaints remained low with a maximum of 13. In contrast, the 2021 model year shows specific reported issues concentrated in the Fuel/Propulsion System with 3 complaints, alongside 2 complaints for the combined Air Bags, Structure, and Service Brakes category and 2 for Power Train. Safety data for 2021 indicates one crash complaint and one fire complaint, though the data does not specify the root cause for these incidents. Unlike the 2006-2007 period which saw zero recalls despite high TSB counts, the 2021 record highlights diverse operational complaints without a provided total recall count for direct comparison. This places the 2021 model in a position of moderate reported issues across critical systems rather than the high-volume service bulletins seen in the earlier years provided. Prospective buyers should consider this a viable option provided a thorough inspection confirms the integrity of the fuel and braking systems.

Open recalls

NHTSA campaigns

637

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

1 involved a crash · 1 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’98 ’99 ’00 ’01 ’06 ’07

Owner complaints filed with NHTSA, by component

All 13 complaints on record, top 8 components.

Fuel/Propulsion System3

Air Bags,Structure,Service Brakes2

Power Train2

Service Brakes, Hydraulic1

Service Brakes1

Air Bags1

Fuel System, Gasoline1

Steering1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 637 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
PIT5966F	2026-06-23	Unknown Or Other	This Preliminary information communicates an issue with an OTA pending message still…
PIC6423A	2026-05-11	Unknown Or Other	Pi created to provide GM dealers with information on gathering information for projection…
PIC6551B	2026-05-11	Unknown Or Other	This Preliminary information communicates to dealer to perform a MEC reset for wireless…
PIT3271Q	2026-04-01	Unknown Or Other	This preliminary information communicates information about how to determine if a wheel…
PIP6104	2026-03-09	Unknown Or Other	This Preliminary information communicates the steps on how to save a GDS2 Session Log and…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific Express 2500. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group 78 battery Vehicles taking 6.0 qt Engine oil filter 12731742 Engine air filter 84612001 Fuel filter 84428486 Spark plug 12622441

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 2021 Express 2500 take?

6.0 qt of 5W-30, per the factory manual.

Does the 2021 Express 2500 have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.