rick619
Well-Known Member
2023 Bighorn with 5.7. Bought new in April of 2024. Currently 10K miles on it.
I was driving at slow speed on the street last weekend and the truck started shaking almost like it was running out of gas. Check engine light flashing. I was down to about 1/4 tank, so filled it up, but didn't help. Took it to the dealer Tuesday. They called yesterday and said they were showing cylinder 3 and 6 misfire. Said they were going to try the spark plugs first. I asked the service rep if it's normal for a truck with 10K miles to need new spark plugs? He was caught off guard, and said 'maybe'. I didn't press him further figuring he is not the tech.
I've done some research and found it could be a few items:
camshaft
bad fuel injector
defective coil
failed lifter
Some with 4th gen that had the engine replaced.
Please chime in if you've had this issue. Luckily under warranty, but discouraging at 10K miles and pretty light use.
I was driving at slow speed on the street last weekend and the truck started shaking almost like it was running out of gas. Check engine light flashing. I was down to about 1/4 tank, so filled it up, but didn't help. Took it to the dealer Tuesday. They called yesterday and said they were showing cylinder 3 and 6 misfire. Said they were going to try the spark plugs first. I asked the service rep if it's normal for a truck with 10K miles to need new spark plugs? He was caught off guard, and said 'maybe'. I didn't press him further figuring he is not the tech.
I've done some research and found it could be a few items:
camshaft
bad fuel injector
defective coil
failed lifter
Some with 4th gen that had the engine replaced.
Please chime in if you've had this issue. Luckily under warranty, but discouraging at 10K miles and pretty light use.
