The 2018 Express is a workhorse van on an aging platform. The 6.0L V8 is the problem child here—prone to catastrophic AFM failures that grenade engines. The 4.3L V6 and Duramax are significantly more reliable, but all suffer from transmission cooler line corrosion and weak motor mounts.
6.0L V8 AFM (Active Fuel Management) Lifter Failure Leading to Engine Damage
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Ticking or tapping noise at idle that worsens with engine temperature, Check engine light with misfire codes (P0300-P0308), Loss of power, rough idle, Metal shavings in oil, low oil pressure warning in severe cases
Fix: AFM lifters collapse, push rods bend, and cam lobes wear. Metal debris circulates and damages bearings. Repair requires engine removal, complete teardown, cam replacement, all lifters, pushrods, often crankshaft and bearings if caught late. 25-35 hours labor. Many shops recommend AFM delete during rebuild or installing a reman/used engine outright.
Estimated cost: $6,500-12,000
Transmission Oil Cooler Line Corrosion and Leaks
Common · medium severity
Typical onset: 60,000-120,000 mi
Symptoms: Transmission fluid dripping from front of vehicle, near radiator, Pink or red fluid spots on driveway, Burnt transmission smell if fluid runs low, Transmission slipping or delayed engagement if leak is severe
Fix: Steel cooler lines rust through at connection points and along frame rails, especially in salt-belt states. Replace both lines as a set—one fails, the other is close behind. 2-3 hours labor. Some techs upgrade to braided stainless aftermarket lines.
Estimated cost: $350-650
Transmission Mount Failure
Common · low severity
Typical onset: 70,000-110,000 mi
Symptoms: Clunk or thud when shifting from Park to Drive or Reverse, Vibration felt through floor at idle or under acceleration, Visible sagging or torn rubber on crossmember mount
Fix: The rear transmission crossmember mount deteriorates from engine torque and road vibration. Rubber separates from metal. Replace mount and inspect crossmember for cracks. 1.5-2 hours labor on a lift.
Estimated cost: $250-450
6.6L Duramax Diesel Fuel Filter Housing Air Intrusion
Occasional · medium severity
Symptoms: Hard starting after sitting overnight, Loss of power under load, surging, Check engine light with fuel rail pressure codes (P0087, P0093), Excessive white smoke on cold start
Fix: Filter housing O-rings and hand primer seal dry out and allow air into fuel system. Diesel won't tolerate air—causes rough running and injector damage if ignored. Replace filter housing assembly or reseal with upgraded Viton O-rings. Prime system thoroughly. 1.5-2 hours labor.
Estimated cost: $300-600
Rear Door Latch and Handle Failures
Occasional · low severity
Typical onset: 50,000-100,000 mi
Symptoms: Rear doors won't latch or won't open from outside, Door ajar warning stays on, Handle feels loose or breaks off, Door opens while driving (dangerous)
Fix: Plastic components in latch mechanism wear and break. Handle linkage clips fail. Replace latch assembly and/or handle. 1-1.5 hours per door. Check recall history first—some batches had side door glass detachment issues (NHTSA recall).
Estimated cost: $200-400
4.3L V6 Intake Manifold Gasket Leaks
Occasional · medium severity
Typical onset: 90,000-130,000 mi
Symptoms: Coolant smell from engine bay, no visible external leak, Slow coolant loss, need to top off every few weeks, White smoke from exhaust on cold start, Misfire codes if coolant enters cylinders
Fix: Plastic intake manifold gaskets deteriorate and leak coolant internally into crankcase or externally at the valley pan. Replace intake gaskets, throttle body gasket, valley pan gasket as a set. Inspect for coolant in oil. 4-5 hours labor.
Estimated cost: $650-1,100
Owner tips
If buying a 6.0L V8, budget for AFM delete or plan to replace the engine—this is not a matter of 'if' but 'when.' The 4.3L V6 and Duramax are far safer bets.
Check transmission cooler lines during every oil change, especially if the van has seen winter salt. Catch leaks early before the transmission cooks itself.
Change transmission fluid every 50,000 miles regardless of 'lifetime fill' claims—these vans work hard and fluid breaks down.
Duramax owners: use only quality diesel fuel and change fuel filters every 15,000 miles. Water in fuel will kill the injection system.
Buy the 4.3L V6 or Duramax and it's a solid work van; buy the 6.0L V8 and you're gambling with a grenade—avoid unless the engine has already been replaced or AFM-deleted.
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.
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General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for various model year 2018-2021 vehicles. The affected tires were cured for too long during production.
Consequence: Over cured tires may develop a break in the sidewall resulting in sudden air loss or a belt edge separation which could lead to a tread/belt loss. Either condition can cause a loss of vehicle control, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge. The recall began March 22, 2021. Owners may contact GMC customer service at 1-888-988-7267, Buick customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N212329050.
EQUIPMENT · 19V428000
2019-06-11
Unicell Body Company Inc. (Unicell) is recalling certain 2017-2019 Chevrolet Express and GMC Savanna, 2018-2019 Hino 155, Ford Econoline and Transit and Isuzu NPR, and 2018 Ram ProMaster-based vehicles equipped with ASA Electronics Voyager monitors used to display the back-up camera image. The affected monitors may revert back to the factory default settings which may cause the camera image to be reversed.
Consequence: The driver may inadvertently turn the wrong direction to avoid an object behind the vehicle, increasing the risk of a crash.
Remedy: Unicell will work with ASA Electronics to notify owners and offer a remedy, free of charge. The recall began May 9, 2019. Owners may contact ASA Electronics customer service 1-800-384-4400 or Unicell at 1-716-853-8628.
VISIBILITY:GLASS, SIDE/REAR · 19V387000
2019-05-23
General Motors LLC (GM) is recalling certain 2016-2019 Chevrolet Express and GMC Savana vehicles. One or both of the rear-quarter windows may be tempered glass instead of laminated glass. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 226, "Ejection Mitigation."
Consequence: Tempered glass increases the risk of injury in the event of a side impact or rollover crash.
Remedy: GM will notify owners, and dealers will replace the tempered glass windows with laminated glass windows, as necessary, free of charge. The recall began July 5, 2019. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is N192218960.
ELECTRICAL SYSTEM · 18V655000
2018-09-21
General Motors LLC (GM) is recalling certain 2016-2018 Chevrolet Express and GMC Sierra vehicles equipped with a single, manual, rear climate control module (CCM). If the temperature is set to maximum heat or the mode knob is set to maximum floor vent and an electrical short occurs, components within the CCM may overheat.
Consequence: If the CCM overheats, there is an increased risk of a fire in the vehicle's headliner.
Remedy: GM will notify owners, and dealers will remove the electrical insulation from a wiring connector within the CCM to remove the fire risk, free of charge. The recall began November 6, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 18299.
TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS · 18V509000
2018-08-02
General Motors LLC (GM) is recalling certain 2018 Chevrolet Express and GMC Savana vehicles with certain combinations of front-tire and gross-vehicle-weight option codes. The Tire Pressure Monitoring System (TPMS) may be incorrectly calibrated, causing the TPMS warning lamp to illuminate when tire pressure reaches 37 PSI, not 41 PSI. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 138, "Tire Pressure Monitoring Systems."
Consequence: If the low tire pressure telltale is not illuminated at the correct tire pressure, the driver may have less time to react to a low-tire-pressure situation, which could affect the driver's ability to control the vehicle in certain situations and could increase the risk of a crash.
Remedy: GM will notify owners, and dealers will check the PSI information on the remote control door lock receiver (RCDLR) and tire placard match, and if the information is different the RCDLR will be reprogrammed. This repair will be done free of charge. The recall began August 27, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18255.
EQUIPMENT · 18V267000
2018-04-26
General Motors LLC (GM) is recalling certain 2009-2014 Chevrolet Silverado HD and GMC Sierra HD, 2009 GMC Topkick 5000, 6000, 7000 and 8000 Series and Isuzu F Series, and 2009-2018 Chevrolet Express, and GMC Savana vehicles, equipped with certain Plastic-Handle Fire Extinguishers or Push Button 'Pindicator' Fire Extinguishers. These extinguishers may become clogged, preventing the extinguisher from discharging as expected or requiring excessive force to activate the extinguisher. Additionally, in certain models, the nozzle may detach from the valve assembly with enough force that it could cause injury and also render the product inoperable. For a full list of the affected fire extinguisher models visit: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17E062-5427.pdf
Consequence: In the event of a fire, if the fire extinguisher does not function properly, it can increase the risk of injury.
Remedy: GM will notify owners, instructing them to contact Kidde to get a replacement fire extinguisher, free of charge. The recall began June 11, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020, GMC customer service at 1-800-462-8782, and Isuzu customer service at 1-866-441-9638. GM's number for this recall is 18146.
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