2016 Chevrolet Impala Limited problems

“Brake booster pump failed ( gm part # 12704586 ) Causing limited braking and severe damage to internal engine components, camshafts ,timing chain have been damaged This is a ongoing problem in which i have had this pump replaced at my expense several times. The problem stems brake booster pump is lubricated using the engine's oil . Booster pump has a small screen to filter oil, this filter can easily become clogged resulting in booster to run dry and grenade into top of engine. These pieces then interfer with camshafts and timing gears other components”

“When I put the car in park and try to turn the car off the Shift Park message comes on preventing me from cutting the car completely off. I put in back in drive or reverse then back in park it still dings and shows the message. I takes a number of repeating these steps for it to stop and turn off and this is happening every time I'm trying to turn the car off.”

“I am filing a complaint regarding ongoing and worsening issues with my Chevrolet vehicle, which appear to point to broader defects involving the engine and electrical systems. Months ago, while driving, the car suddenly lost power and displayed "Engine Power Reduced." I had to keep using it due to work needs. Over time, it hesitated more during acceleration and felt increasingly unsafe. When I finally brought it to a Chevrolet service center, I was told the issue involved the pistons. The vehicle also regularly shows a "Shift to Park" warning even when the gear is in Park, raising concerns about the transmission's reliability. The power loss continues, especially when going uphill — again triggering the "Engine Power Reduced" alert and dropping the speed to no more than 35 MPH. A diagnostic showed a P0302 code for a cylinder 2 misfire. The radio head unit, already replaced once under warranty, failed again after just 9 months. Prior to the worsening idle and gear issues, I also received network-related codes involving the ECM and transmission computers. Although I’ve replaced the alternator, the car still shows "Service Electric System" warnings, suggesting…”

“The contact owns a 2016 Chevrolet Malibu. The contact stated while driving on several occasions at various speeds, the check engine warning light illuminated, and the vehicle lost power. Additionally, the message “Engine Power Reduced" was displayed. The vehicle was taken to an independent mechanic and was diagnosed and determined that the throttle body sensor needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 107,000.”

“When I was driving my car with my child in it my break tightened up and I couldn’t apply them to stop I had to let my foot off the gas and let my car slow its self down safely. When I got my car home my husband looked at it and found out that my vaccum pump had went out and part of it broke off in the engine. This is very unsafe and this needs to be investigated because people can’t know when the vacuum pump is going to go bad this issue lays on gm and Chevy to make sure the parts they are using will hold up and be safe”

“The contact owns a 2016 Chevrolet Malibu. The contact stated that upon depression of the brake pedal, the brake pedal made an abnormal grinding sound and became stiff. The check engine warning light was illuminated. The contact's husband replaced the brake sensor; however, the failure recurred several days later. The contact related the failure to NHTSA Campaign Number: 16V272000 (Electronic Stability Control). The dealer was notified of the failure and informed the contact that the VIN was not included in the recall. The contact was provided an estimate for a diagnostic test and was referred to the manufacturer for assistance. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 120,000.”