2017 Cadillac Escalade: misfire or rough idle

Filed Apr 25, 2026 · Engine · KS

Engine misfire, AFM lifter collapse, defective AFM/DOD lifter technology. The three diagnosis I have had done to check for multiple opinions have all come back the same with a collapsed AFM lifter causing camshaft damage, overall failure of an AFM/DOD deactiviating lifter in the 6.2L L86 engine leading to engine damage. It is available for inspection. The problem has been confirmed by multiple independent service providers and confirmed to be an issue in ongoing litigation against GM. It was initially diagnosed by a mobile mechanic and then taken to a independent service mechanic who confirmed the initial diagnosis. It was then confirmed again by a third party independent mechanic. The engine light did not appear until the noise started and what I now know as when the lifters failed, at which after my vehicle alerted me with the engine light. When the problem first occurred, I was driving around 35 MPH down a public road, I had to immediately slow down and pull over. I then limped the vehicle to a safe destination where the mobile mechanic was able to check it out. Luckily, I was not going high speeds and the public road I was driving on was not busy so I was able to pull over safely upon the issue the start of the warning lamp flashing. The engine component failure would have been a much higher safety risk for myself and others if I was driving on a busy road or highway. I have spoke with both GM and Cadillac, they are aware of this defect, yet refuse to provide relief. I have been quoted $13,000-$17,000 to begin repairs to the engine.

Filed Mar 14, 2026 · Engine, Transmission · UT

My 2017 Cadillac Escalade with the 6.2L V8 engine experienced AFM (Active Fuel Management) valve lifter failure. While driving on the freeway the vehicle began stuttering and shaking violently, and it felt as though I had lost control of the vehicle. The check engine light illuminated and diagnostic codes P0300 (random misfire) and P0304 (cylinder 4 misfire) were found. The vehicle was confirmed by a Cadillac dealership to have collapsed AFM lifters on the right side, a faulty valve lifter oil manifold (VLOM), and a broken exhaust bolt requiring extraction. The engine was also showing slightly low compression at times and making noise on cylinder 4. This is a known defect in GM's AFM system across multiple model years. The failure poses a serious safety risk as the stuttering, shaking, and sudden loss of engine power occurred unexpectedly at freeway speeds, significantly reducing my ability to safely control the vehicle. The repair has been confirmed and quoted by an authorized Cadillac dealership. The vehicle is available for inspection upon request.

Filed Feb 23, 2026 · Engine · GA

The 6.2 L engine on my 2017 Cadillac Escalade failed at around 97,000 miles. I took it to Heritage Cadillac dealership for a diagnostic check and had it repaired. The engine had a broken engine rod and lifters damage to the engine. I had the engine repaired at the dealership but a few weeks later I heard rattling noise coming from the engine. I took it back and told I would need a another engine due to complete engine failure. Prior to my engine failure around 55,000 miles, I reported to the same dealership service department that I noticed the engine would give me a rough idle occasionally and burn more gas whenever it happened. I was told it was nothing they could do because the check engine light wasn't on.

Filed Apr 28, 2025 · Engine · 50,000 miles · WI

The contact owns a 2017 Cadillac Escalade. The contact stated while driving at an undisclosed speed, the vehicle lost motive power. There was no warning light illuminated. The vehicle was able to be restarted. The vehicle was taken to the dealer where it was diagnosed and determined that the rocker arm, crankcase, and the overhead valve needed to be replaced. The vehicle was repaired; however, the failure recurred. The contact stated that while driving at an undisclosed speed, there was a misfire coming from the engine. There was no warning light illuminated. The vehicle was taken back to the dealer but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 50,000.

Filed Mar 27, 2025 · Engine · 65,000 miles · WI

The contact owns a 2017 Cadillac Escalade. The contact stated that while driving approximately 70 MPH with the cruise control engaged, the vehicle unintendedly decelerated to 30 MPH. The contact continued driving the vehicle to the residence at 30 MPH. The vehicle was taken to the dealer, who diagnosed that the lifters had collapsed and bent the push rods. The contact was informed that the cam shifter, push rods, and lifters needed to be replaced. The vehicle was repaired. The contact stated that after the vehicle was repaired, there was a misfire in cylinder #2. The vehicle was returned to the dealer, who determined that the active fuel management port holes needed to be flushed with fuel additive. The vehicle was not repaired a second time. The manufacturer was informed of the failure and referred the contact to the dealer for assistance. The manufacturer opened a case for the failure and offered to cover half the cost of the repair. The failure mileage was 65,000. The VIN was not available.

Filed Jan 3, 2024 · Engine · MO

Cylinder 6 always presents as a misfired. Between my fiancé and I, we have 3 Escalades. After several diagnostic checks and repair bills, the lifters damaged the Cam shaft. According to the certified Cadillac mechanics, this is an ongoing problem based on the motor’s design. This is a pretty costly repair x3 vehicles.