The 2017 GMC Savana with the 6.0L V8 (L96 engine) is a solid workhorse platform, but it suffers from persistent AFM-related engine failures, transmission cooling issues, and electrical gremlins that can sideline fleets if not caught early.
Active Fuel Management (AFM) Lifter & Cam Failure Leading to Engine Rebuild
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Loud ticking or knocking from engine, especially on cold start, Check engine light with misfire codes (P0300-P0308), Loss of power and fuel economy, Metal shavings in oil during changes
Fix: AFM lifters collapse, wiping out cam lobes and often causing piston/rod damage from debris. Most cost-effective repair is disabling AFM with a tune and replacing lifters, camshaft, and pushrods (12-16 hrs labor). Severe cases need short block or full engine rebuild (25-35 hrs). Many shops now recommend AFM delete kits proactively on high-mileage units.
Estimated cost: $3,500-8,500
Transmission Oil Cooler Line Failure & Cooler Clogging
Common · high severity
Typical onset: 70,000-120,000 mi
Symptoms: Transmission fluid leaking near radiator or frame rails, Transmission overheating, especially when towing or loaded, Harsh shifting or slipping after warmup, Pink or milky transmission fluid (coolant contamination)
Fix: Steel cooler lines rust through at mounting brackets, and factory cooler clogs with debris. Requires replacement of cooler lines, external cooler, and often a transmission fluid flush (4-6 hrs labor). If coolant mixed with ATF, transmission rebuild is likely needed. Proactive line replacement with coated or stainless lines at 80k saves transmissions.
Estimated cost: $800-1,400
Fuel Pump & Fuel Filter Clogging from Tank Contamination
Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Hard starting or extended cranking, especially when tank is below 1/4 full, Loss of power under acceleration or up hills, Engine stalling at idle or while driving, Check engine light with fuel trim codes (P0171, P0174)
Fix: The factory fuel filter is inside the tank and not serviceable separately—requires full pump module replacement. Rust and sediment from steel tanks kills pumps prematurely. Dropping tank, replacing pump module, and flushing lines takes 3-4 hrs. Many techs recommend inline fuel filter addition for fleet vehicles.
Estimated cost: $600-1,000
Transmission Mount Failure (Rear Mount)
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Clunking or banging when shifting from Park to Drive/Reverse, Excessive vibration at idle in gear, Visible sag or tearing of rubber mount when inspected from underneath, Driveline shudder during acceleration
Fix: The rear transmission mount wears out from the weight of the 6L80/6L90 transmission and constant load cycling. Replacement is straightforward—support transmission, unbolt old mount, install new (1.5-2 hrs labor). OEM mounts last longer than cheap aftermarket. Inspect this every oil change after 60k miles.
Estimated cost: $250-450
Body Control Module (BCM) & Electrical Wiring Corrosion
Occasional · medium severity
Symptoms: Intermittent no-start with no crank, no click, Dash lights flickering or gauges going haywire, Power windows, locks, or mirrors working intermittently, Battery draining overnight (parasitic draw), Multiple random trouble codes with no mechanical cause
Fix: BCM behind the glove box fails from heat and vibration, and wiring harnesses corrode at connectors (especially near firewall and under battery tray). Diagnosis takes 1-2 hrs, BCM replacement/reprogramming adds 2-3 hrs. Wiring repair varies wildly by location. NHTSA recalls cover some wiring issues—check VIN before paying for repairs.
Estimated cost: $400-1,800
Intake Manifold Gasket Leaks (Vacuum Leaks)
Occasional · low severity
Typical onset: 100,000-150,000 mi
Symptoms: Rough idle or hunting idle RPM, Check engine light with lean codes (P0171, P0174), Hissing sound from engine bay at idle, Slight loss of power and fuel economy
Fix: Plastic intake manifold gaskets harden and crack over time, causing vacuum leaks. Manifold removal and gasket replacement on the 6.0L V8 is labor-intensive due to accessory removal (6-8 hrs labor). Not urgent but worsens over time. Some techs use sealant as a temporary fix, but proper gasket replacement is the only long-term solution.
Estimated cost: $800-1,300
Owner tips
Disable AFM with a Range/AFM delete kit and tune at 60-80k miles to prevent lifter failure—costs $500-800 but saves $5k+ in engine work
Flush transmission fluid every 50k miles and inspect cooler lines for rust annually—this platform eats transmissions if you neglect cooling
Add an inline fuel filter between tank and engine to catch sediment and extend pump life in high-mileage or fleet use
Keep battery terminals clean and check for corrosion at BCM and firewall connectors during every service—prevents electrical nightmares
Use quality oil (5W-30 or 0W-20 if AFM-deleted) and change every 5k miles—this engine is sensitive to oil quality due to AFM system
Buy one if you can verify AFM delete or budget for it immediately; skip any high-mileage example with original lifters or a questionable transmission service history.
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: Side post terminals; battery located under hood on driver side
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Every control module on the 2014-2017 GMC Savana — 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.
📍 rear doors, integrated with camera assembly above license plate
🔧 GDS2 or Autel/Launch
⚠️ Camera calibration may be required after replacement
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.
General Motors, LLC (GM) is recalling certain 2003-2023 Chevrolet Express Cutaway and GMC Savana Cutaway incomplete vehicles equipped with wiring for an optional rear heating, ventilation, and air-conditioning (HVAC) system. When the HVAC blower motor circuit is left unused with exposed connectors and wiring, the circuit can corrode and overheat.
Consequence: An overheated electrical circuit increases the risk of a fire.
Remedy: Dealers will properly seal the rear HVAC blower motor circuits at the left side B-pillar, free of charge. Owner notification letters were mailed May 2, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GMC's number for this recall is N222386050.
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.
VISIBILITY:POWER WINDOW DEVICES AND CONTROLS · 18V295000
2018-05-03
General Motors LLC (GM) is recalling certain 2014-2017 Chevrolet Express and GMC Savana vehicles equipped with power windows. Liquid may leak into the driver's power window switch and cause corrosion, resulting in high electrical resistance.
Consequence: High electrical resistance can increase the risk of a fire.
Remedy: GM will notify owners, and dealers will replace the driver side window switch, free of charge. The recall began August 10, 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 18155.
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.
Performance
Horsepower
341hp
Torque
373lb-ft
Fuel economy (EPA)
City
11mpg
Highway
16mpg
Combined
13mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
10,000lb
Payload
4,250lb
Curb weight
5,600lb
EPA class
Vans, Passenger Type
Wiper blades
Full-size cargo/passenger van, no rear wiper. Both blades are 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 2017 GMC Savana 6.0L V8 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.