Faulty injector connectors get a loose connection and make truck shutter and check engine light come on. This has happened 3 times already and had to replace one faulty plug. This is all over the internet from other l5p owners. Yet gmc want do anything

- Sulphur , LA, USA

Our 2018 Chevrolet Silverado 1500 was purchased new and only serviced at Chevrolet dealerships. While on vacation we were driving on a 3-lane paved road and then engine started knocking for a few seconds and then a chime could be heard and the check engine light came on. The vehicle lost power and the vehicle was difficult to control. We were fortunate that other vehicles were able to avoid us since our truck slowed quickly (without the brakes being applied). The vehicle had to be towed to a local Chevrolet dealer for diagnostics. The dealer found that the hydraulic lifters on the right bank of the engine collapsed (resulting in a misfire) and there was extensive engine damage. The vehicle was equipped with a 5.3l engine with AFM/DFM (cylinder deactivation). Mileage was 64,562. Vehicle was repaired with "upgraded" valve train parts from General Motors as this failure mode seems to be somewhat common in AFM/DFM engines (can find class action information during web search).

- Highland, MI, USA

I have a 2018 Chevy Silverado 1500 that I bought in June of 2018, brand new from integrity Chevy in Chattanooga tn.. One ago ago I was driving home and the check engine light came in and starting running poorly and you could hear a knocking noise coming from the engine. I took it back to integrity Chevrolet in Chattanooga, the employee at the auto service counter got inside and started the truck and he new at once what the issue was, he didn-??t even take it back to the shop so the mechanic could look at it. He told me it was the lifters knocking. I left the truck with them. The next day he called me and told that the lifters where bad and had bent push rods. They had to replace everything on both sides, told me how much it would cost. It was out of warranty as I had 74,000 miles on it. The total cost that I had to pay was $5,468 dollars. The truck is less then 4 years old. The employee at the desk when I paid for it said that I just paid for a new engine! Again the truck was less then 4 years old.

- Cleveland , TN, USA

10 degrees outside starter motor will freeze up and not want to start the truck. had 3 mechanics not a deal all look at it, tested the battery and came to the starter motor is defective. to have the starter replaced at the dealer for its under warranty.

- Acton, MA, USA

Vehicle will not start, starter is bad

- Hebron, KY, USA

Driving on highway 70 mph with out prior warning the truck begins to shake, backfire, lunging, loss of power, all the lights on the dash starting going crazy, cars behind me trying to avoid hitting me, it wouldn't speed up, having a hard time getting it off the road and out of the way of highway traffic before getting rear ended by traffic behind me. The truck only has a little over 60000 miles on it which is just beyond the 60000 mile warranty, The truck lost compression because of a lifter failure in the motor. After this I have no interest in ever buying another Chevy product, If they cant build a motor that will last more than 3 years maybe they should rethink their future in the auto industry.

- Cuba, MO, USA

radiator crack. and also looks like previous years have the exact problem and have a special coverage done on them, Special Coverage Adjustment 15829 Radiator Leak #PI1513A Bulletin No.: PI1513F

- Odessa, MO, USA

Twice now GM has recalled the block heater for my truck. The first remedy did not fix the issue and had to be recalled again. This was back in July 2021. It is now the end of November 2021 and nothing more has been done. My truck requires a block heater in order to start in the upcoming cold months. This will make two years in a row I cannot use my truck when the temperatures fall below freezing. It directly affects my livelihood because I need a truck for work. What more can I do to speed this process up" How is it GM can still sell new diesel pickups with working block heaters, but are not required to fix the older diesel pickups"

- Kaufman, TX, USA

The engine gave out at 60k miles. Only covered buy the extended warranty I bought. the transmission thunks on downshifts. The exhaust adaptive valve started making a terrible noise at 40k miles. I took it to the dealership for them to tell me my extended warranty doesn't cover it and to buy an aftermarket exhaust because it would be too expensive to replace it. I think they quoted me at $1200

- Sachse, TX, USA

On Saturday the check engine light came on then Sunday it flashed service restraint system soon dash lights came on clicked and lights stayed on about a memory then went off truck wouldn-??t start on Sunday night no lights on dash worked

- Big Cabin, OK, USA

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that the vehicle was parked and failed to start. The vehicle was towed to the residence. The contact stated he replaced the battery and was able to start the vehicle. The contact stated that the failure reoccurred while the vehicle was parked. The contact stated he was able to jumpstart and restart the vehicle however, as he was exiting the parking lot and making a right turn, the vehicle inadvertently stalled almost causing him to crash into a wall. Several unknown warning lights illuminated. The contact jumpstarted the vehicle however, the failure reoccurred while driving and he veered to the side of the road. Several unknown warning lights were illuminated. The radio, the headlights were engaging and disengaging independently. The vehicle was towed to a tow yard. The dealer was made aware of the failure and informed the contact that he would be responsible for the cost of repair as the vehicle was out of warranty. The manufacturer was made aware of the failure and informed the contact that they could not assist because the VIN was not included in a recall. The vehicle was not repaired. The approximate failure mileage was 56,500.

- El Paso, TX, USA

The "check engine" light keeps coming on.

- Kissimmee, FL, USA

The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving approximately 55 mph, the vehicle lost motive power with the check engine warning light illuminated. The contact restarted the vehicle. The vehicle was taken to the local dealer but was not diagnosed nor repaired. The manufacturer was notified of the failure. The approximate failure mileage was 23,000.

- Yuba City, CA, USA

Radiator started leaking at 40,000 miles. Leaking at a weld where tube connect to side tanks.

- Hermitage, TN, USA

Reduced power steering assist engine stall ipc / radio / HVAC goes blank various dtc. Had my head lights flickering, had stabilitrak errors, power steering errors, and the worst of all, the steering wheel jerking out of my hands. Isnt my video but similar when I was driving about 5mph [xxx] parts of this document have been redacted to protect personally identifiable information pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- De Soto, IA, USA

Bulletin no pi1513F describes an issue with Chevy Silverado (amongst other models) and the radiators leaking due to over cycling of the thermostat. I have a 2018 that is barely 2 years old, and a leaking radiator! GM is doing nothing to own up to this issue, and they are expecting me to pay the entirety for a replacement, and I don't even have confidence it won't happen again. This bulletin should be extended to cover all years until GM proves they have a solution in place. It is completely unethical for GM to not address this issue and expect me to put this much money into a brand new truck. I slowly began to notice the coolant reservoir going down. I eventually brought it to my dealership (twice), and on the second visit they found the leak, although mileage was over the bumper to bumper warranty during the second visit. It is a very slow leak.

- Darlington, SC, USA

Coolant water keeps spilling from water pump. As I was driving on the freeway, the pump blew and spilled all the coolant and had to pull over to the side. Had to get it replaced paid $150 for the part and than labor another $150. Truck has less than 30K miles and the water pump already breaking down. New vehicles are now designed to break on you easily so us customers spend more on parts and labor.

- Coachella, CA, USA

Transmission overheats when backing a trailer up a slight hill and will not move untile it cools down.

- Nowata, OK, USA

I started my vehicle and put the truck in reverse to back out of a parking spot. Gave the truck gas and it wouldn't accelerate. Put the truck back in park and looked at the guages and there were no RPM's showing on the cluster and the oil pressure was at zero. There was a message that said trailer brake system on the screen. I turned the truck off and on again and the same thing happened. I put the truck in drive and it would move forward but the motor ran very rough and there was no power steering. I dismissed the first message and another message popped up that said "steering assist is reduced, drive with care." I pulled into another parking spot, turned the truck off, and waited for a ride. I started the truck when my ride showed up to make sure it was still not working and it was as if nothing happened before. The truck had no issues on the 16 mile drive home. Got home and turned the truck off and started it again and the message came back up and the issues came back. I have a video of the trailer brake system and me shifting the truck and the guage cluster. I have a picture of the steering assist message.

- Mackinaw, IL, USA

Truck will lose all power, everything will shut off, and then come right back on. It has happened while accelerating into traffic, slowing down turning right and turning left, and while moving straight ahead. It has been in the shop once for this same issue and they tell me they cannot find anything wrong with it. The stabilitrac warning will come on and go off and have had stall warning flash in traffic at stop lights. This has been going on for the last 12,000 miles and I have 20,083 miles on truck now. The clock and radio reset. It shutdown pulling into traffic on a busy highway and was a very dangerous situation. Been trying to get it into dealership since 3 weeks ago and no luck. This is not the only issues with this truck.

- Paoli, OK, USA