2022 Chevrolet Silverado 1500: misfire or rough idle

Filed Oct 15, 2026 · Fuel system · 51,042 miles · NE

The contact owns a 2022 Chevrolet Silverado 1500. The contact stated that while driving at approximately 65 MPH with cruise control engaged, the vehicle suddenly lost speed, the check engine warning light started flashing, and the engine started sputtering. The electronic stability control (ESC) and traction control warning lights were also illuminated. The vehicle was taken to an independent mechanic for diagnosis. Diagnostic trouble codes P0203 and P0303 were retrieved, indicating a fuel injector 3 circuit malfunction and cylinder 3 misfire. The fuel injector wiring circuit was corroded, and the fuel injector on the left bank was replaced. The contact contacted the manufacturer by telephone and was informed that the bumper-to-bumper warranty had expired and that the failure was not covered under the powertrain warranty. The failure mileage was approximately 51,042.

Filed May 7, 2026 · Engine, Fuel system · NJ

Vehicle developed engine ticking/tapping noise followed by rough running and misfire condition. Independent repair facility performed engine teardown and found cylinder 4 exhaust camshaft lobe severely worn/damaged. Repair facility stated the exhaust roller follower/lifter needle bearings failed and fell out, causing the roller to seize and come off position, resulting in improper valve operation and cylinder malfunction. Vehicle lost proper engine performance and required major internal engine repair including camshaft, lifters/lash adjusters, and roller followers. Failure appears consistent with GM Preliminary Information bulletin PIP5847B for 2019–2024 Chevrolet Silverado/GMC Sierra 2.7L L3B engines describing exhaust roller follower bearing failure and camshaft damage. Concern is that sudden valvetrain failure could result in loss of power, engine failure, or unsafe driving condition.

Filed Mar 24, 2026 · Engine, Fuel system · FL

Year: 2022 Make: Chevrolet Model: Silverado 1500 Engine: 2.7L TurboMax (L3B) VIN: [XXX] Mileage at Failure: 119,139 Description of Problem: 2022 Chevrolet Silverado 1500 2.7L L3B TurboMax engine is completely inoperable due to Cylinder 4 exhaust roller follower failure causing exhaust camshaft failure and bent exhaust valves. Vehicle shakes severely, will not accelerate, check engine light on, and has gone into limp mode. Diagnostic codes P0304 (Cylinder 4 misfire) and P2101 (electronic throttle actuator fault triggered by engine shaking and limp mode) were recorded. All external components including spark plugs, coils, and injector harnesses were inspected and ruled out as causes. Failure is confirmed mechanical and internal. This failure was diagnosed and documented in writing by an authorized Chevrolet dealership on March 12, 2026 (Repair Order XXX, Service Advisor [XXX] ). The dealer's written estimate states verbatim: "Failed Cylinder 4 exhaust roller follower failure causing exhaust camshaft failure and bent exhaust valves. Cylinder head replacement required to correct this concern. Direct cause of engine noise and misfire condition." Dealer repair quote: $10,371.34. A second independent shop confirmed the same failure and cited Active Fuel Management (AFM) and Direct Fuel Injection (DFI) as known contributing design factors in this engine's oil consumption and internal wear pattern. That shop quoted between $11,876.88 and $14,897.35. This is a known pattern in the L3B engine platform. Consumer Reports has documented a 4% catastrophic failure rate in this engine. Multiple the federal safety agency complaints exist for this same failure across 2019-2022 model years. GM has issued technical service bulletins but has not issued a recall. General Motors was formally notified of this failure via certified mail and executive email on March 24, 2026. Vehicle is inoperable and poses a safety risk as the failure causes sudden loss of power and engine shaking w INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOI

Filed Mar 21, 2026 · Driver assistance, Electrical · AZ

Ever since I’ve own, the vehicle emergency breaking has never worked. I get all the red lights and noises and I almost ruined somebody but luckily I swerved, but the truck is never break on its own and the dealership tells me that’s the way it is you have to hit somebody first before it breaks and the other day I was driving and all kinds of service lights came on the dash the trucks are misfiring

Filed Jan 17, 2026 · Engine · LA

Vehicle has experienced repeated internal engine failures related to the exhaust valve lash adjusters and valvetrain. The engine developed abnormal valvetrain noise, misfires under load, and loss of power. The check engine light would only flash during hard acceleration or when passing another vehicle (wide-open throttle), then turn off after approximately 10–15 seconds and never remain illuminated. Because the warning light would not stay on, the vehicle continued to be operated without clear indication of an active or worsening engine failure. Dealer inspection confirmed exhaust valve lash adjuster failure, which led to camshaft and valvetrain damage. This failure has occurred more than once, including after prior dealer repairs. This is a serious safety concern because the vehicle was driven at highway speeds and during passing maneuvers while experiencing internal engine damage and misfires, without persistent warning to the driver. Sudden power loss, stalling, or catastrophic engine failure during acceleration or passing presents a risk of crash or injury. This appears to be a systemic engine defect rather than normal wear, as the failure recurred and was not reliably detected by the vehicle’s monitoring system.

Filed Sep 6, 2025 · Fuel system · NC

Code p0307 misfire on cylinder 7. Have gotten code 3 times in last month. Lights on dash and reduced power. Less than 50k miles when first occurred. Turn off and back on all lights gone except for engine light which goes off in a day then runs fine. Dealer quoted $3k+ to replace injectors. $60k+ for a new vehicle it should last more than 2 years and 50k miles. 5 yr 60k mile engine and power train warranty but they pick and choose what components to cover. After looking online I see many owners with same issues. Some with hardly any miles. Other recalls done with different motor sizes. HELP!!!

Filed Aug 25, 2025 · Engine, Fuel system · VA

GM is recalling the Fuel Injector Flow Rate system but is unwilling to fix damaged parts from the Flow rate being off. My Engine has Misfiring, pitted Cam, camshaft lobe wear, valves and needs a new head stemming from the Fuel Injector Flow Rate being off. GM is refusing to support their product. This is a known issue GM is having with these engines.

Filed Jun 17, 2025 · Engine, Fuel system · MD

The engine has been rough idling after being put in a GM certified repair shop multiple times within the last year. Also the oil pan has a constant issue with leakage even after doing 3000 dollars worth of work, including the oil pan being replaced. There was a safety recall put out for the Chevrolet Silverado 1500 for this very problem that my vehicle is having ( engine loss of propulsion) recall # N252494002 L87. This is affecting our livelihoods.

Filed Apr 16, 2025 · Engine, Transmission · CT

At ~51,000 miles, my 2022 Silverado Trail Boss 6.2L L87 experienced a sudden engine failure while on / exiting the highway. The engine began shaking violently, the check engine light flashed, and it lost all power without warning. It was towed and remained out of service for 28 days. The dealer diagnosed lifter delamination, a scored camshaft, and scored cam, main, and rod bearings. Metal shavings were found in the engine, indicating internal contamination. Despite the severity, the manufacturer approved only an engine overhaul, not a full replacement. The service manager stated, “it’s nearly impossible to get these motors,” pointing to a national shortage due to widespread failures of the 6.2L engine platform. After picking up the vehicle, I immediately noticed a rattling noise from underneath. I returned to the dealer (who also failed to recharge the AC system). They traced the noise to the catalytic converter and muffler and quoted $2,709.24 to replace the full exhaust system. The manufacturer refused to cover the repair, even though the issue appeared immediately after the engine failure. The dealer did not confirm the exact cause, but possible contributing factors include combustion instability, engine misfires, unburned fuel, and extreme vibration during the failure. These conditions can severely impact the exhaust system and emissions components. I was quoted nearly $4,000 for an extended warranty, which I now feel pressured to buy due to loss of confidence in the engine. Metal debris may have affected the oiling system, injectors, or other critical parts. This raises serious safety concerns: sudden power loss at highway speed, compromised emissions components, and the risk of future failures. With the 6.2L under the federal safety agency investigation, I believe this incident supports further review or recall.

Filed Feb 10, 2025 · Engine · TX

Complete engine failure while traveling 70 mph on highway. No warning prior to failure, very lucky to not be involved in crash. No dash warning lights or gauges indicating any potential issues. Truck was repaired under manufacture's warranty in August 2024 at GM dealership. The following were the issues found in August: Two pistons with stacked compression rings and abnormal scoring on piston skirts, misfire on cylinder 7 and oil on the spark plug, engine disassembled and found oil ring stacked on cylinders 2, 6 & 7. All 8 pistons were replaced, connecting rod bearings replaced. The complete engine failure happened today 2/10/2025. The truck is sitting at a GM dealership waiting for GM approval to replace engine. 2022 Chevrolet Silverado 6.2 L V8. First issue in August 2024 it had 52k miles, today's engine failure it had 65k miles.

Filed Nov 15, 2024 · Engine · MI

Driving to work on the highway at speeds up to 70 MPH. engine started misfire and several lights came on. only way to keep moving was to push accelator to floor until i was able to reach a place to stop. took to dealer and they replaced one lifter spring under warranty. engine only had 46,000 miles. engine is 6.2l v8

Filed Jun 4, 2024 · Driver assistance, Engine · FL

Engine started misfiring at 33,000 miles, dealer replaced fuel injector still happening. Now they are breaking down the engine to check the cam shaft, I guess I will see my truck in 2 - 3 weeks. Front collision warning not working properly for the second time within a year. Dealer says they are replacing the camera.