2018 Chevrolet Impala — Known Issues & Recalls

Your power steering stopped working completely while the service stability and service power steering warning lights came on, forcing you to drive without power steering assist. This is a serious safety issue that could make steering difficult, especially at low speeds or during parking. Chevrolet has issued a service bulletin (19NA182) to address this problem. The fix will likely involve diagnosing and repairing the power steering system, which may include replacing the power steering pump, hose, or fluid.

Your steering wheel won't turn left when you try to back up or drive. A warning message appears on your dashboard related to steering, but the shop couldn't find an obvious mechanical problem. This could be an electrical or computer issue with your steering system that needs diagnostic testing.

Your steering wheel became completely unresponsive while you were trying to straighten the wheels in your driveway, with no warning light appearing. The dealer diagnosed the problem as a faulty power steering electrical motor and steering gear that both need replacement. Fixing this will require replacing the power steering motor and steering gear assembly.

Your power steering suddenly stopped working while you were driving with no warning signs beforehand. This required an expensive repair at the dealership, and the problem occurred after only 6 months of ownership.

Your transmission unexpectedly and repeatedly shifts itself into Park while you're driving or at a stop, then shifts back to your selected gear — sometimes happening 3-5 times in a row. This causes sudden drops in speed (from 65 MPH down to 40 MPH) and can make it dangerous to merge on highways, navigate hills, or turn at intersections. The problem may be related to a faulty transmission speed sensor or transmission control issue, though no warning lights appear and your dealer hasn't been able to diagnose it yet. The fix will likely involve diagnosing the transmission control system, replacing the speed sensor, or servicing the transmission.

Your car hesitates and jerks when you press the accelerator pedal at various speeds, and you hear an abnormal humming sound. The check engine light is on, and when you put the car in reverse, it won't accelerate even when you press the pedal. A mechanic diagnosed this as transmission failure. The transmission may need to be rebuilt or replaced.

Your transmission has shifting problems that started when you bought the car in 2018. Your car sometimes gets stuck in gear and won't accelerate smoothly, and this happens without warning at different times while driving. You've already paid for shifter repairs, but the problem continues. The dealer can diagnose it, but testing costs over $1,500.

Your air conditioning system isn't working because the evaporator core is leaking. General Motors has a known issue (Special Coverage Adjustment #N182186881) for this exact problem affecting multiple 2018 Impalas, but GM has refused to cover the repair under this program based on your vehicle's VIN. The repair will likely involve replacing the evaporator core and recharging the air conditioning system.

Your 2018 Chevy Impala's AC evaporator core developed a leak and had to be replaced at the dealership. You noticed a coolant smell in the cabin but no warning lights. You believe your car qualifies for GM's Special Coverage N182186881 for evaporator core leaks, but GM has denied your claim without explanation. The repair may involve replacing the evaporator core with a new or upgraded unit to prevent future leaks.

Your passenger side front seat has a faulty airbag sensor that isn't consistently detecting when someone is sitting there. Sometimes moving the seat forward or backward temporarily fixes it, but the problem keeps returning. If you're in an accident, the airbag might not deploy properly, putting your passenger at serious risk. The sensor likely needs to be replaced or the seat assembly may need to be repaired by a dealer.

Your driver's side airbag deployed while your parked car was sitting unattended overnight. Before this happened, you noticed the airbag warning light come on while driving. This is a serious safety issue that needs immediate professional diagnosis to determine why the airbag fired without a crash. A technician will need to inspect the airbag system, wiring, and sensors to identify the fault and replace the deployed airbag.

Your brake pedal required excessive force to stop the vehicle while reversing, and the brakes failed to respond properly even when pressed hard. When you shifted to drive, the vehicle continued rolling forward uncontrollably despite pressing the brake pedal, forcing you to steer into a curb to avoid hitting a building. A mechanic diagnosed a faulty ABS module with low voltage communication issues as the cause, and the vehicle was not repaired.

You purchased a used 2018 Chevrolet Impala that had undisclosed accident damage and experienced multiple failures shortly after purchase, including burst transmission cooler lines and air conditioning system issues. The airbag warning light came on, and the dealership initially fixed bad connectors, but the light returned. You discovered the dealership installed Ford airbags in your Chevrolet instead of proper Chevy parts, and the warning light has come on again. The airbag system may need proper diagnosis and replacement of the correct manufacturer airbags to ensure the safety feature works as designed.

While driving at 45 mph, your accelerator pedal stopped responding and the vehicle wouldn't accelerate even though you pressed it. No warning lights came on. A mechanic and dealer both diagnosed a transmission failure. This happened at 98,000 miles.

While driving, your car suddenly jerked and multiple warning lights came on at once (StabiliTrak, ABS, and Check Engine). As you arrived at work, the engine lost all power while the dashboard displayed an action required message, causing your brakes and steering to become stiff and difficult to control. After regaining power 10 minutes later, the engine shut down again while you were driving on the highway. This likely involves a serious electrical or engine control issue that needs immediate diagnosis to restore safe steering and braking function.

Your check engine light didn't illuminate when your battery was failing, which means you had no warning of the problem. Additionally, your brakes feel spongy and occasionally go all the way to the floor even though the pads and rotors are in good condition. This suggests an issue with the brake system's hydraulic components or brake fluid rather than wear on the friction surfaces.

During routine service, your mechanic discovered that all four Goodyear Assurance tires (235/50/R18) have severe tread separation and piling, which means the rubber is breaking apart and bunching up. This is a serious tire condition that can affect your vehicle's handling and safety. Your tires should be replaced as soon as possible to prevent a blowout or loss of control while driving.

Your tire pressure monitoring system isn't receiving signals from the sensors in your tires, so you won't get a warning if your tire pressure drops. This safety feature is designed to alert you to underinflated tires before they become a problem. The fix will likely involve diagnosing the receiver module (part of your keyless entry system) and either replacing it or the tire pressure sensors themselves.

Your power steering assistance suddenly failed while you were driving, making it extremely difficult to steer and stay in your lane. You were able to get the car home safely and found no undercarriage damage. Your dealer was unable to help diagnose or repair the electronic power steering system, and the only warning you received was a message saying "power steering service drive with care." The repair will likely involve diagnosis and replacement of electronic steering components by a qualified technician.

While driving at highway speeds, your car suddenly loses power without warning, triggering a 'Reduced Engine Power' warning message. After shutting off the engine for a few minutes and restarting, the car runs normally again, but the check engine light stays on. This issue has occurred multiple times in a short period.