Which parts fail
Components named in complaints (automatic emergency braking, adaptive cruise, lane keeping, backup camera).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Chevrolet Impala owners, lightly cleaned up (personal details are redacted by NHTSA).
The connector on the drivers side module is corroded from water intrusion. It is an identical condition as described in NHTSA recall N172097060. The dealer and GM claims this vehicle was not included in the recall, even though it is a 2015 Chevrolet Impala. They now want me to pay 1,000+ dollars to fix the issue according to the steps in the bulletin? If i don't get this fixed soon is it could disable my vehicle as explained in the bulletin. I purchase the car in November of 2019 which is 7 months after this bulletin was released, and because GM did not include the VIN number in their system it was never corrected previously. The connector in the images is damaged now because the mechanic broke it at the dealer trying to get it off from the internal corrosion. …
Blind side collision monitor is not functioning properly due to faulty design which allows moisture to get into cabin where the monitor is installed. Causing the collision feature not to function properly and "service side collision" msg to show on the dashboard. I had this issue before and had it repaired by the dealer on 03/2019. The problem has since returned. But this time it's caused the functions on the dashboard ( gas, h/c and speed meters, digital monitor screen etc) to stop working where I can't tell if I have gas or my driving speed or anything associated with the dashboard info system, it blacks out. And now the alert light on the door mirrors continuously stay on even when there's no car on the side of my vehicle and even when the car is turned off. I took it back to the dealership and have been told that the collision monitor sensors AGAIN need to be replaced.
The blind sensor indicators are defective. The right side stays on but the the left side worked accordingly. Without warning the indicator on the left also stopped working. GM is well aware of the issue but will only fix the issue if it happens within a warranty timeframe. The initial issue with mine happened while driving in a winter storm with slushy roads. The sensors that stays illuminated isn't as much as a safety issue as the one that was lighting up as expected then stopped without warning. This item should be a full recall not a fix it if it breaks scenario. Mine stopped working within my warranty timeframe but because I was a secondary purchaser, I had no way of knowing that waiting until my next oil change would cause me to be stuck with $800 in repairs because GM refused to recall a safety issue item they are well aware of.
I have had the blind spot modules replaced two times already and they are out for the third time. I have had to replace them like just over every 2 years. This time I had loan my car to my daughter, due to any accident she had with a deer, and had her four kids in the car when multiple modules started shutting down and nearly leaving her stranded. When I was able to inspect the car i found the the blind spot modules where extremally corroded and showed signs of melting to almost catching fire. I believe that these are a safety issue, and need to be recalled and problem fixed with a reliably solution. I am a ASE Certified Master Technician and have been for well over 38 years. and have seen many of these GM modules go bad multicable times.
Taillight gasket failed and leaks water resulting in water leaking into trunk anytime it rains or go through car wash. This caused corrosion to the amplifier shorting it out, there is now no sound or on star available. It also caused the blind spot detection monitor to have issues and no longer work. Upon inspection when the vehicle is running the wires sometimes start smoking white. Dealer said there was no issue, obviously the radio doesn't work, the screen doesn't even light up, no backup camera, no sound warning if the forward collision system is engaged, no seatbelt ding, no blinker sounds, no rear detection system or cross traffic warning system.
My side detection system has failed and not working on my 2015 ltz. Blind spot light stays on even when car is off. It's causing other lights going crazy on and off. No check engine light on just the side blind spot indicator lights stay on. My car only has 70k miles it's been happening for 1 wk I'm afraid to drive it after reading online that a clients impala nearly caught on fire. I'm reading that there is a recall with 2015 impala # n172097060 side blind zone alert module water intrusion. Please advise if there is anything Chevy/GM can do for me. I'm afraid to drive car and feel it's a hazard driving around with faulty blind spots light.
It appears that my vehicle had a special coverage bulletin titled "N172097060 - Special Coverage Side Blind Zone Alert Module Water Intrusion" This special coverage only covered vehicles for 6 years or 80,000 miles. This week I started experiencing problems with my vehicles side blind zone alert system. From everything that I have read it appears to be the same issue that led to the special coverage mentioned above being issued. However, my vehicle is now outside of the specified coverage limitations. I believe that it should still be covered as it still remains a safety issue. Regardless of how many years or miles have passed. Thank you.
In April 2019, the side detection module was replaced under warranty, at 21,500 miles. The same 'issues' are reappearing, where a warning is illuminated on the side mirror when no cars are present. If the dealer/ mfr replaced the original modules and wiring harness with the same items, this would only delay a reoccurrence. I called Chevy Cust. Sec for assistance, and they said their 'recall' program expired in 2019. The car currently has just 47,000 miles and the the modules should not have failed a second time. There is obviously a design flaw, allowing water penetration, and Chevy did nothing to prevent it.
I received an error Service "Side Detection System". Dealer says it needs to replace the Side Blind Zone Alert Modules (part #84648920) due to water intrusion on the module. They say it can affect the entire dashboard, causing it to fail. The Chevy Impala forums have many mentions of this issue with this car. There have been reports of smoke coming from these modules. GM had issued a Special Coverage N172097060 in 2019 but only covers cars 6 years old or less and less than 80,000 miles. Due to the widespread occurrence of this issue, it should be recalled.
The stabilitrak system GM installed on my vehicle repeatedly indicates a "service" notification. Once this occurs, my vehicle loses power and the ability to shift into any driving mode. This issue began around 60,000, I currently have 77,500+ on my vehicle. GM issued a technical service bulletin (PIC5992A) for my vehicle, however, denies it's the issue and will only attempt a repair from a computer code, which they continue to fail to replicate. The occurrence of this issue is especially worrisome on any interstate highway. ODI 11406439
Collision Avoidance complaints in other Impala years
Frequently asked questions
How common are collision avoidance problems on the 2015 Chevrolet Impala?
NHTSA has 43 complaints about the driver assistance of the 2015 Chevrolet Impala, 14% of the model year's 300 complaints. The component named most often is blind spot detection (39 mentions).
Is there a recall for 2015 Chevrolet Impala collision avoidance problems?
No. NHTSA lists no driver assistance recall for the 2015 Chevrolet Impala, though it has 3 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 Chevrolet Impala collision avoidance problems start?
Half of the complaints with a recorded mileage happened before about 69,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.