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2021 Chevrolet Express 3500

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 Express 3500.

The 2021 Chevrolet Express 3500 is the latest model year of a long-running Chevrolet nameplate, specified with a 6.0-quart engine oil capacity running 5W-30 viscosity. Owner-reported issues for the year total 13, with the fuel and propulsion system standing out as the most-cited trouble area alongside two recalls filed against the vehicle. Set against the platform's 1997–2019 complaint record — which bottoms at 2 in 1997 and tops out at 11 in 2001 — the 2021 total of 13 represents a new high in the available data, a notable uptick worth factoring into any assessment of the model's reliability trajectory.

Model year2025202420232022202120202019

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 filter12731742 alt 24585238
Engine air filter84612001 alt 84373974
Fuel filter84428486
Spark plug12622441
Battery88866306 alt 88866305
Front wiper blades15214346
Serpentine belt12679333 alt 12662028
Thermostat89018168 alt 12587397

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length244.1 in
Overall width79.5 in
Overall height81.9 in
Wheelbase155.1 in
Curb weight5505 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 FluidATF
Automatic Transmission Fluid Capacity7.4 qt
Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity6.0 qt
Brake FluidDot 3
Brake Fluid Capacity2.1 pt
Brake FluidDot 3
Brake Fluid Capacity2.1 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 Bolts24.0 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 Plug6 Speed Transmission: 6.6 ft-lbs
Automatic Transmission Drain Plug8 Speed Transmission: 6.6 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-6-5-4-3-2
Cylinder Firing Order1-8-7-2-6-5-4-3
Spark Plug ManufacturerAC Delco
Spark Plug Gap.037-.043 in
Spark Plug Torque15 ft-lbs

Battery & A/C

RefrigerantR134a
Oil GroupPAG
Standard BCI Group Number78
Standard BCI Cranking Performance600 cca
Standard BCI Group NumberEquipped with 2 batteries: 78
Standard BCI Cranking Performance770 cca
Standard BCI Group Number78
Standard BCI Cranking Performance600 cca

Service checks

Key ON Engine OFF (KOEO)60.0-80.0

Brakes

Minimum Pad ThicknessFront: 0.079
Minimum Shoe ThicknessDrum Brake: 0.063" in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
122.0 ft. lbs., Step 2: 40°22 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115.0 ft. lbs., Step 2: 85°15 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1Take 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
159.0 ft. lbs., Step 2: 90°, Step 3: 90°59 ft. lbs
Flex or Driveplate Bolts — tightening sequence 1 stages
111.0 ft. lbs., Step 2: 22.0 ft. lbs., Step 3: 45°11 ft. lbs
Flex or Driveplate Bolts — tightening sequence 1 stages
137.0 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
137.0 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
111.0 ft. lbs., Step 2: 22.0 ft. lbs., Step 3: 30°11 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
1Bolts 1-63.7 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
13.7 ft. lbs., Step 2: 7.43.7 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 miAccelerator 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 miWindshield Wiper Blade (replace)
Every 30,000 miFuel Filter (replace)
Every 45,000 miEngine Air Filter Element (replace) · Fuel Evaporative Emission Control System (inspect)
Every 97,500 miSpark Plug Wires (inspect) · Spark Plugs (replace)
At 150,000 miAccessory 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 2021 Chevrolet Express 3500 sits at the tail end of a generation that historically showed very low complaint volumes (2–11 complaints per year) and almost no recalls (zero to one recall per year) from 1997 through 2001, with a modest uptick in technical service bulletins (TSBs) that peaked at 61 in 2001. After a long data gap, the 2019 model again recorded only two complaints and zero recalls, indicating that the low‑complaint pattern persisted into the modern era. In 2021, the three most frequent complaint areas were Fuel/Propulsion System (3 reports), Air Bags/Structure/Service Brakes (2 reports), and Power Train (2 reports), alongside isolated crash and fire complaints (one each), suggesting no new systemic issue beyond the modest issues seen previously. The overall trend shows a consistently low incidence of serious problems across the generation, and 2021 does not deviate from that pattern. **Takeaway: 2021 is a historically low‑risk year within this line, making it a sound choice for a used purchase.**

2
Open recalls
NHTSA campaigns
637
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
13
Owner complaints
1 involved a crash · 1 a fire
Owner complaints by model year NHTSA · this generation & adjacent
’97’98’99’00’01’19

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.

BulletinDateComponentSummary
PIT5966F2026-06-23Unknown Or OtherThis Preliminary information communicates an issue with an OTA pending message still…
PIC6423A2026-05-11Unknown Or OtherPi created to provide GM dealers with information on gathering information for projection…
PIC6551B2026-05-11Unknown Or OtherThis Preliminary information communicates to dealer to perform a MEC reset for wireless…
PIT3271Q2026-04-01Unknown Or OtherThis preliminary information communicates information about how to determine if a wheel…
PIP61042026-03-09Unknown Or OtherThis 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 3500. 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 batteryVehicles taking 6.0 qtEngine oil filter 12731742Engine air filter 84612001Fuel filter 84428486Spark plug 12622441

Reference guides

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

Vehicle recalls & TSBsOBD-II trouble codesTorque specificationsMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 2021 Express 3500 take?

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

Does the 2021 Express 3500 have open recalls?

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