The contact owns a 2017 Chevrolet Silverado 1500. The contact stated that the vehicle was making an abnormal ticking sound while driving. The vehicle was taken to the dealer, where it was diagnosed, and it was determined that the lifters were bent and needed to be replaced. The vehicle was not repaired due to the cost. The contact stated that while driving at 30 MPH, the transmission skipped while shifting to a gear, and the vehicle jolted and jerked. The failure had progressively worsened, and the vehicle was making an abnormal high-pitch sound at start-up. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with transmission component failure, and the dealer informed the contact that it would be cost-effective to replace the entire transmission. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 140,000.

- International Falls, MN, USA

1. The vehicle's transmission does not operate consistently and safely. 2. At times, the transmission will not engage, and this has placed my family in very dangerous situations when changing lanes. 3. At red lights, at times, the transmission will not engage to drive. 4. When slowing in traffic at times, the transmission will not adjust to the slower speed, although the operator is applying the brakes. Then, without warning, the transmission will engage the higher speed, almost launching the vehicle forward suddenly, potentially into another vehicle or person, depending on the situation.

- Forney, TX, USA

Hard jerking while driving clunks while driving shifts rough really bad when driving changes gears its an automatic stalls at lights runs rough jumps forward has no power at times brakes fail when stopping lunges when breaking Dealership and manufacture know about this Its been to dealership over 9 times same problem

- Antioch, CA, USA

The contact owns a 2017 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, there was an abnormal metal-on-metal sound coming from the engine. No warning lights were illuminated. The contact stated that on a separate occasion, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the engine sounded rough. The vehicle was taken to two different independent mechanics, who diagnosed that the Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) were impacting the lifters, which impacted the camshaft, and scraped the cylinder walls, causing the engine to fail. The vehicle was not repaired. The vehicle was then towed to the dealer, who confirmed the engine failure. The vehicle was not repaired due to the cost. The vehicle was towed to the residence and no longer driven. The failure mileage was approximately 156,000.

- Pacifica, CA, USA

Our 2017 High Country 1500 Chevy Silverado is garage-kept and has very low mileage (73k). But it has the Active Fuel Management (AFM) system, which just caused lifter failure, thus causing catastrophic engine damage. In research, we discovered newer models with the AFM have been recalled for this exact problem. Unfortunately, our model truck with the AFM has not been recalled, despite the fact that the problem and damage are the same.

- Burns, TN, USA

At 54,900K miles my truck started to experience a tapping sound from the engine. I took it to a shop and was told that the Auto Fuel Management system can cause problems with the lifters. I tried to use my 200,000/10 year Warranty, but the warranty company refused because I went over 6 months on my oil change. The cost of repairs was over $6,900 and the push rods were bent, one lifter was broke off, the cam was damaged from the lifters and a piece on the timing chain was broke. Chevy knows there's a problem with the 5.3L Engine and refuses to fix it. No warning light ever came on. This problem first appeared in December of 2025 around 54,900 miles. I have since had the vehicle repaired and I kept all the parts. Chevy should recall this engine instead of letting their customers pay the repair costs for a flawed design caused by their AFM System. I was told to stop driving my vehicle because if I continued to drive it with the tapping sound it could cause the engine to blow up. I also have an After Market Warranty which would not cover the repair because Chevy issued a Technical Service Bulletin about the problem, Bulletin No.: 19-NA-219.

- Imperial, MO, USA

Bought the truck brand new, after 20,000 miles started vibrating. Took it to the dealership said it was the transmission shutters. They changed the fluid. At 50,000 miles did it again, they said GM came out with a thicker fluid, but it in there. Was fine for a while. At around 135,000 miles getting the vibration again. Also, at 140,000 miles cylinder 8 misfiring. Took it in and they tore it apart and said cylinder 4 and 8 lifter failure. Damage to cam and bent rods. Had to replace all lifters, cam and rods. Cost over $10,500, but had BG warranty used that additive every oil change so BG covered $4,000. I went by the oil life indicator on the truck to determine when I needed to change it, but apparently for engine for life you have to change it more frequently at 6,000 miles, so they wouldn-??t cover that part.

- Broken Arrow, OK, USA

I bought the vehicle with 14000 miles.had oil changed at dealership ever,5000 miles.I drive 10 miles a day.at 55000 miles the lifters are ticking like a time bomb.It makes me sick that a vehicle with no more miles than this is in this shape.Gm should stand behind there junk motors with this afm.

- La Vergne, TN, USA

The lifter collapsed causing it to scar the cam shaft due to afm/dod

- Pegram, TN, USA

Nothing yet. Between doing research and general observation the DOD/AFM is a known issue for these motors. The engine will randomly loose a valve and cause the engine to shut down causing for a major Saftey concern if traveling or towing

- Springfield, OH, USA

Loud tapping sound appears to be coming from Lifters and/or camshaft lobes from cylinder 2. Preliminary diagnosis was done by independent service center. Estimated cost to repair could be as much as $10,000. Vehicle odometer reads 72,108 miles. Vehicle started this problem early November 2025.

- Oxford, MS, USA

Premature engine failure specifically the lifters failed and the push rod failed causing the vehicle to become unusable and stranding the operator. Also transmission surges and slips causing unsafe driving conditions

- Chester , NH, USA

making a ticking noise on the engine

- Uvalde, TX, USA

Unknown system or component failure. Vehicle is available upon request to inspect. My families safety was at risk, power steering goes out while driving, all service lights come on, vehicle goes into -??limp mode-??, would go in and out of gear while driving, gears won-??t work properly (P, R, D-??), when shifting into R camera won-??t come on. This problem is continuing. Have not been able to get it into dealership. Vehicle has not been inspected by police, dealership, or insurance. Stabilitrak notification, and all service lights go off. No problem or symptoms prior to failure. Vehicle was well maintained and I have service records of every repair, oil change, etc.

- Fontana, CA, USA

While driving my vehicle, with around 85,000 miles, the engine suddenly began running rough and felt jerky and sluggish. This was concerning and potentially dangerous situation, as the engine failure happened while I was travelling at high speed. A sudden loss of power on the highway put me and other drivers at serious risk. The check engine light came on, so I pulled over as soon as I could safely do so. Shortly after, the light started flashing, so I shut off the engine and contacted the dealership service department. They advised having the vehicle towed in for inspection. Prior to this event, I had not had any issues with the vehicle nor had the check engine light come on. After looking into it, the dealership initially suspected a thrown rod but said they wouldn't know the full extent of the issue until they could tear down the engine. Upon further inspection, they determined that the lifters had failed and would need to be replaced. The dealership has performed all regular maintenance and oil changes on my vehicle. When I asked what could have caused this, they explained that it's a known issue with these lifters and engines - one that Chevrolet has experienced for years, even in models prior to my 2017.

- Warrensburg, MO, USA

Lost power to engine while on interstate.

- Moneta, VA, USA

Electronics for hands free stopped working. This part was already replaced once. When backing up, the whole truck shut down. I restarted, it said to roll drivers side window down and up. Truck started up again. Few days later... returning from trip, lost power, windshield wipers came on, electronics in truck started blinking. Pulled over, rolled driver's side window up and down. started back on road. This has happened numerous times. Whenever I gave it extra gas, asking for power to pass, same thing mentioned above happened. Very stressful! Next day, hit a hole, truck totally shut down again. Husband was able to safely coast off road, however, if he had been pulling out at a major intersection, this could have been bad. Warning light that comes with shutdown says "stabltrack issue". I have not seen our dealer service department yet, but plan to very soon. VERY unsafe... and I love this truck!!!!

- Comanche, TX, USA

The contact owns a 2017 Chevrolet Silverado 1500. The contact stated that while driving 30 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The contact stated that the vehicle stalled. The contact was able to coast to the side of the road. There were several unknown warning lights illuminated. The vehicle was towed to the residence. The contact had the vehicle diagnosed by a mobile mechanic. The mobile mechanic diagnosed the vehicle and determined that there was a misfire in cylinders #3 and #7. The vehicle was not repaired. The contact towed the vehicle to B2B Fleet Services where it was diagnosed and determined that the head caskets had failed and needed to be replaced. The contact stated that the lifters were replaced; however, the failure persisted. The manufacturer was not notified of the failure. The failure mileage was approximately 65,000.

- Port St. Lucie, FL, USA

The AFM system is a faulty system that starved my lifters of oil and they ended up collapsing causing a flat spot on my cam. The engine code would come up as a misfire but the code is caused by the flat spot created on the cam by the lifter it's a faulty system that cost me $7,000. My 8spd transmission also has a hard shift from 1st to 2nd pushing the vehicle forward and jerking it when it shifts. The dealer and GM said this was natural with this type of transmissions which we now know is a lie.

- Veguita, NM, USA

Lifters caused engine failure at 114000 miles resulting in needing a new engine

- Bailey, CO, USA