The 2022 Express sits on GM's ancient full-size van platform with proven drivetrains, but these newer examples are showing catastrophic 6.6L gas V8 engine failures and transmission cooling problems unusually early in their service life.
Symptoms: Sudden metallic knocking from engine bay, Oil pressure warning light, Metal shavings in oil during changes, Loss of power under load
Fix: Complete engine replacement or rebuild required. Rod bearings and main bearings fail prematurely, contaminating entire lubrication system. 20-30 labor hours for long block swap, often warranty-covered if under powertrain warranty but devastating if not.
Estimated cost: $12,000-18,000
Transmission Oil Cooler Line Failure
Common · high severity
Typical onset: 30,000-80,000 mi
Symptoms: Transmission fluid leaking near radiator, Pink fluid puddles under vehicle, Transmission overheating warnings, Harsh shifting or slipping when hot
Fix: Steel cooler lines corrode at fittings or develop stress cracks. Requires line replacement and often external cooler flush. If coolant mixed with ATF, transmission may need rebuild. 3-5 hours labor for lines only.
Estimated cost: $600-1,200
8-Speed Automatic Transmission Control Module Software Glitches
Common · medium severity
Symptoms: Hard downshifts from 2nd to 1st at stops, Hesitation on acceleration from stop, Service StabiliTrak warnings with transmission issues, Limp mode activation without stored codes
Fix: TCM software calibration issues covered by TSB and recall. Dealer reflash typically resolves, but some units need physical TCM replacement. 1-2 hours for programming, 3-4 if module replacement needed.
Estimated cost: $0-800
Transmission Mount Failure (Rear Mount)
Common · medium severity
Typical onset: 40,000-90,000 mi
Symptoms: Clunk when shifting from Park to Drive, Vibration at idle in gear, Excessive driveline movement visible under acceleration, Rattling over bumps
Fix: Rubber transmission mount deteriorates quickly under heavy loads typical in commercial use. Replacement is straightforward but requires supporting transmission. 1.5-2.5 hours labor.
Estimated cost: $300-500
6.6L V8 Head Gasket Failure
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: White smoke from exhaust on cold start, Coolant loss with no visible leaks, Overheating under load, Bubbling in coolant reservoir, Misfires on specific cylinders
Fix: Head gasket design appears marginal for severe-duty applications. Both heads should be pulled, checked for warpage, and resurfaced if needed. 16-22 hours labor depending on exhaust configuration and A/C lines.
Estimated cost: $3,500-5,500
4.3L V6 Fuel Pump/Pressure Regulator Issues
Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Hard starting when hot, Sputtering under acceleration, Engine stalling at idle after highway driving, Fuel odor near tank
Fix: In-tank fuel pump module develops pressure regulation problems. Tank must be dropped for access. 4-5 hours labor, straightforward job but tank capacity makes it heavy.
Estimated cost: $800-1,400
Duramax 2.8L Diesel DEF System Failures
Occasional · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: DEF quality poor warning, Speed limited to 55 mph message, Check emissions system light, DEF gauge reading incorrectly
Fix: DEF tank heater, level sensors, and injector fail in commercial duty cycles. DEF crystallization damages components if low-quality fluid used. Tank/module replacement 5-7 hours, injector adds 3-4 more.
Estimated cost: $1,200-2,800
Owner tips
If buying 6.6L gas V8, get pre-purchase inspection including oil analysis — early bearing wear shows up in metal content
Change transmission fluid every 40k miles despite 'lifetime fill' claim, especially if towing or commercial use
Use only top-tier diesel and DEF on Duramax models, inspect DEF tank cap for contamination monthly
Check transmission cooler lines during every oil change — catch seepage before catastrophic failure
Consider aftermarket transmission cooler if regularly loaded heavy or operating in hot climates
Hard pass on used 6.6L gas models until engine bearing issue is resolved by GM; 4.3L V6 and Duramax are safer bets but still verify transmission service history thoroughly.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Diesel engine requires high CCA battery; AGM recommended for durability
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Every control module on the 2018-2026 Chevrolet Express — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
⚠️ Mileage programming from BCM required; VIN and option configuration mandatory
Tire Pressure Monitor Control Module (TPMS)0.5 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Integrated into BCM or standalone module behind instrument panel
🔧 TPMS relearn tool or GM Tech2
⚠️ Sensor ID relearn required after tire rotation or replacement; 315MHz or 433MHz sensors
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE · 24V839000
2024-11-07
General Motors, LLC (GM) is recalling certain 2022-2023 Chevrolet Express and GMC Savana vehicles. Incorrect software in the transmission control module (TCM) may result in harsh shifting, reduced power, unintended deceleration, rear wheel lockup, or cause the vehicle to move in an unintended direction.
Consequence: Rear wheel lock-up or moving in an unintended direction can increase the risk of a crash.
Remedy: Dealers will update the transmission control module software calibration, free of charge. Owner notification letters were mailed December 9, 2024. Owners may contact GM customer service at 1-888-988-7267, Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N242471620.
Performance
Horsepower
350hp
Torque
468lb-ft
Capability & size
Towing capacity
10,000lb
Payload
4,250lb
Curb weight
6,100lb
Wiper blades
Full-size cargo/passenger van with no rear wiper. Both blades typically same length.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2022 Chevrolet Express 6.6L V8 Duramax Diesel and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.