Check Engine Light On problems of the 2014 Chevrolet Silverado 1500

I chose a used 2014 chevy silverado with 180k miles. I met my salesperson, bernard, on site at pugmire Ford, in carrollton, GA. When I test drove the vehicle, the truck had off road tires, so I requested that pugmire put regular tires on the truck before taking possession. They agreed and the truck was delivered a few days later. Soon after delivery, I noticed a soft noise seemingly coming from the engine. I informed my salesperson bernard of the issue. He asked me to bring the truck back for review. I did & bernard told me �it had something to do with the exhaust so don't worry about it. It will go away after a few drivecycles�. I didn't believe him so I had the obd checked, that indicated that the catalytic converter had failed. I sent the document to bernard, then I asked if the vehicle had a recent emissions inspection, he said he didn't know. He apologized, but stated that they would not be responsible for any repairs to the vehicle. At this point, I reminded bernard 1. It is illegal to sell a vehicle that cannot pass emissions 2. That my bank had not yet mailed the check. With that mind, pugmire Ford finally agreed to pay for the replacement of the catalytic converter. So I agreed to authorize my bank to send the check. Pugmire had arranged for the truck to be fixed at g&s auto and they paid for the work. But after repair, the check engine light returned. So I took it back to g&s to ask why. That's when they determined the catalytic converter had failed due to internal engine damage. They recommended another shop for a 2nd opinion. That shop is called all pro automotive. All pro confirmed the damage and provided a quote for the repairs. Pugmire Ford voided all claims of the vehicle being an an �as-is� purchase when they paid to replace the catalytic converters. They took ownership of it, and opted out after they received the check from my bank.

Truck began to idle rough and would jerk during taking off and stopping. Check engine light began flashing and stabilitrak light came on. Took it to a mechanic who reported fuel buildup. I was told that the pistons were broken as well. My truck has 88,000 miles on it and gm refuses to fix it even though there are service bulletins pertaining to the engine misfire from fuel buildup because the truck is greater than 5 years old.

Spark plug wires in the 1st (twice), 3rd, and 6th position have become dislodged while driving, both in town and on the highway. This then causes the check engine light to illuminate, the traction control light to illuminate, and the engine to become out of balance.

I was on my way home from work and traveling between 70-75. The engine began to feel rough. The check engine light was blinking and the traction control light was on. I exited the freeway and called the dealership. They said that it was safe to drive it to them. The engine idled roughly as if it wasn't getting air or gas and would die. As I drove to the dealership it shifted roughly, would only go 55, was shaking violently, and had significant loss of power. The technician said the code was for a miss fire on plug 6. They checked to see if the plug or wires had become loose. They thought it was a valve spring and later decided it was a bent push rod and have disassembled the head to inspect further. They are contacting the engineering dept. At gm to find out what would cause this issue. This is our second truck this year. Our first was a 2014 Silverado 1500 2x4, purchased in may w/ 4000 miles, rolled down a hill on July 26th and crashed into another car while unoccupied, locked and in park. Gm was "unable to find anything wrong", and closed our case. The dealership was very helpful and this is our replacement truck. We took a loss but upgraded to the 4x4 because they had already been covered in the recall of June 27, 2014 "in effected vehicles, an electrical signal short may cause the transfer case to shift to neutral with out the driver's input. " we haven't even made our first payment.

While in motion (40 mph) vehicle will start vibrating and check engine light comes on. At times, the vehicle will stall when I slowed down or came to a stop. It happened 3 times. Dealer mechanic discovered it was a loose spark plug cable. It was reconnected 3 times. No permanent fix. Current vehicle miles = 28,000.