Chevrolet Suburban 1500 misfire problems

Filed Aug 28, 2026 · Engine · 17,000 miles · FL

The contact owns a 2025 Chevrolet Suburban. The contact stated that while driving approximately 65 MPH, a banging noise was heard coming from the engine compartment, and the vehicle decelerated. In addition, several warning lights, including the check engine light and the anti-lock braking system light illuminated. The contact pulled over to the side of the road, turned off the vehicle, and had the vehicle towed to a dealer. The dealer diagnosed that the engine and radiator failed and needed to be replaced. The engine and radiator were replaced. Approximately 5 months and 6,000 miles later, the failure recurred and the engine began to run rough. The vehicle was returned to the dealer, where it was diagnosed that the engine failed again. The engine was in the process of being replaced. The manufacturer was notified of the failure and a case was filed. The failure mileage was approximately 17,000.

Filed Mar 13, 2026 · Engine · NJ

While driving home from Costco with my entire family in the vehicle (4 children and my pregnant wife), I noticed the engine misfiring while traveling on Interstate 80 and mentioned to my wife that something felt off with the vehicle. After exiting I-80 onto Route 46 East at the Denville exit, the truck reached the first traffic light where the vehicle rumbled violently, shook, and completely shut off. The engine would not restart. Dashboard lights illuminated but the engine would not turn over, and the hazard lights would not activate. This created a dangerous roadside situation with traffic approaching from behind at approximately 50 MPH. I exited the vehicle and stood in the roadway directing traffic to prevent an accident while my wife attempted to restart the vehicle and called 911. Police arrived and a tow truck was dispatched. The tow truck driver attempted to jump start the vehicle, but it would not start. The vehicle had to be winched onto a flatbed tow truck.

Filed Nov 11, 2025 · Acceleration, Engine · MI

7/13/25: Car repeatedly jerking/shuddering/rough ride. A flashing check engine light came on for 10 or 15 minutes. After stopping car and restarting it, the check engine light went off. 9/15/25: Car jerking and another flashing check engine light. Took to dealership. They drove it and said no codes stored. Told it was probably the transmission "breaking in." Took home. Car continued to jerk/stumble. 8/28/25 to 9/15/25: Car jerking and flashing check engine light back on. Took to Autozone. A Random/Multiple Cylinder Misfire Code was detected (P0300). Took to dealership and confirmed P0300 Code stored. GM TAC engineers involved. Told they were unable to figure out why car was having multiple misfires. Returned car to me because no active code/light. 9/29/25: Car jerking and flashing check engine light back on. Got a warning of "reduced acceleration and drive with care." Car lost power. I have video of this and contacted On Star with report generated and P0300 code. On 10/1/25 on way to dealer, car making audible ticking noise. I have video of this. Took to dealer, the ECM was replaced and oil changed because it was "very dark" (in vehicle with 4,600 miles). Car continued to jerk/stumble. Told by dealer that problem would have to get worse before diagnosis could be made. 10/31/25: Jerking and another flashing check engine light with "reduced acceleration drive with care warning." Turned car off and engine light off. On Star report P0300. Took to dealer. The dealership was given the videos of check engine lights/reduced acceleration warnings and ticking noise video. All show problem happening around 1,200 rpms. Told by dealer on 11/11/25 that GM rep said they will not pay dealer for any work because no active engine light/codes. Told to pick up car. Asked dealer today for reason in writing, but no response. Very concerned about vehicle safety when repeatedly going into limp mode and flashing check engine lights with GM offering no solution.

Filed Oct 31, 2025 · Engine, Transmission · CA

Purchased the vehicle on April 7, 2025. On 7/15/25, the car had 6948 mi. and started running rough, had a loss of power, an odor from the engine, and then on the display: check engine, blinking green vehicle light, and a message stating that the car was lowering for stability control. Took the vehicle to the closest Chevrolet service. The service dept. determined that code found P0307 and P0300, cylinder seven had the most misfires above 500. After completing oil service, the vehicle began to click on the passenger side; however, it was not misfiring. They inspected and found potential lifter issue. Found ticking coming from cylinder 7 and verified misfires. Found 2 pushrods damaged. Heard noise coming from cylinder 4, removed valve cover, removed rocker arms, and found 1 pushrod damaged. They removed and replaced all lifters and 3 pushrods. They stated there was no more noise //after this repair. These repairs were completed on July 25, 2025. On 8/15/25 took back to service because it continued to run rough and made excessive noise and whistling when starting the vehicle. The dealer inspected and heard the noise, inspected the vehicle exhaust leak, checked exhaust manifolds, pipe connections, and determined there were no issues found. On 9/26/25 at 11,821 miles the car was making excessive noise, running rough, and was losing power. Drove home, and the vehicle was running rougher and losing power. No check engine lights or warnings were present. Drove home, and the vehicle was running rougher and losing power until it turned off. Towed in. Maintenance techs determined catastrophic engine failure, all bearings and engine rods seized. After this repair hen the catalytic converter failed. This car has been out of service due to engine failures for 43 days out of the 204 of ownership.

Filed Dec 9, 2018 · Driver assistance, Engine · 201,000 miles · TN

Stability traction control light keeps coming on while in motion. With major oil consumption problems. Just in regular driving I've had transmission, and rear differential work done fixed the problem for a few months now back again with flashing check engine light. Saying cylinder 6 misfiring. I've already sunk in over 4k in this after buying it last year in dec.of 2017. After reading comments this really should be a recall. With so many of the same concerns and complaints that have been listed.

Filed Nov 19, 2018 · Engine · 152,000 miles · OH

I was driving on a city street and made a right turn onto another city street and the engine started running rough and idle rough, service stabilitrak light stayed on, service traction control, transmission jerks from 1st gear to 2nd gear, engine ticking/knocking, service engine light flashing, scan code came up as misfire on cylinder #4, took vehicle to repair shop and lifters were replaced among other things; see attached files.

Filed Feb 16, 2015 · Brakes, Steering · 145,442 miles · IL

10/11/2 brakes failed plus parking brake failed and parking brake shoe assembly was not found upon dealer inspection. Replaced disc brakes and had parking brake shoe installed. 11/09/12 check engine light revealed ignition problem. New ignition wire set installed. 01/29/13 dash cluster failed, had no horn, no headlights, no interior lights, no speed control , no steering wheel lights for control buttons, no speedometer reading, no radio. Replaced dash cluster. 05/05/14 check engine light and stranded when vehicle would not start. Misfire messages on dealer equipment reading. 06/16/14 stranded again , vehicle would not start. Replaced ignition switch. 07/15/14 stranded again , vehicle would not start. Replaced starter relay. 02/16/15 driver heated seat coming on/off while driving on its own. 4 wd engaged on its own while driving and made driving uncontrolled. Awd engaged on its own while driving on dry smooth road. Stranded, would not start. Vehicle at dealer again today for this list of problems.

Filed Jul 31, 2014 · Driver assistance, Engine · 105,000 miles · CA

While driving under normal conditions, stabilitrak light illuminated and engine began idling rough. Codes read cylinder #6 misfire. Diagnosis revealed failed piston. Engine rebuild required at a cost of $6700. Stabilitrak light continues to go on and off.

Filed Aug 30, 2011 · Fuel system · 103,581 miles · CA

I'm having this problem now, I went to the dealer, and they want $280 just to look at it. I have sent it to another dealer and they have had the car for two days, but they cant find the problem. They even asked me to take the suburban home, but one block it happened again. Im so frustrated, and I spent so much on taxi going back an fourth. And no one knows the problem. I was driving down the road and it just dies. When I pulled off I put it in park and started again, I was able to go one more mile and bam it did it again. Why cant anyone figure it out? Why aren't there any recalls? I lost all control of the vehicle because the engine died. What does it take to get someone's attention? When the engine cut off at 69mph I pressed the brake which made it harder and harder to control the vehicle. There are no error codes or anything to describe the issue. I'm afraid to drive the car, for fear that I might slam into someone else. While I was driving, there was no detection of misfire or anything, it just died.

Filed May 17, 2011 · Engine · NY

2003 chevy suburban 1500 4wd 5.3l gm has a known issue with the heads on these vehicles with the 5.3l engines. The company (castech) who made the heads let them go with a defect that allows coolant to leak into the motor. Gm has a tsb on it as well #06-06-01-019b it can cause possible overheating due to coolant loss, as it leaks into the engine it creates rough idle and a slight missfire which will damage the converter sometime in the future. They know about this defect and should be forced to replace these heads with different ones. The only way to correct this issue is to replace the heads with another company.