Similar events unfolding for me too. Bought my 2018 60-days ago and the start/stop pretty much was always "charging" (worked a couple times after some 3 hr trips). Drove it 4 days ago and CEL came on with the message start/stop needs servicing. I went ahead and replaced the AUX14 battery for the ESS and pulled the CEL code at Autozone. Code was P0302 "Cylinder #2 misfire". The new battery didn't resolve the problem, still had a very rough idle, loss of power and CEL kept blinking. I took it to the Chevrolet dealer that sold me the van and holds a 90-day warranty. After they pulled the same code (and no further diagnosis), they said a Chrysler dealer needs to fix it. They're claiming it'll be covered by Chrysler's powertrain warranty, I reckon its ignition system related and want it repaired under the more comprehensive 90-day warranty.
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Bottoming out how my problem was resolved: TLDR; At ~24k miles, bad coil pack caused sparkplug to fail. Replaced both and then reset the ECM.
Looks like this is a common problem and I might just bring the tools and parts to replace on my own if I go on a long trip with this car. I'm just not keen on having my torque wrench bounce around in my car all the time.
The Chevy dealer I bought it from, whom was responsible for the warranty, was inept at doing anything other than using the OBDII scan tool to pull the same code as me. I had them bring it to the Chrysler dealer 2 miles away and handle the business-2-business charges, which worked out well. Even though the Chevy dealer wanted me to bring the car over, the contract on the warranty said otherwise and I refused. The Chevy dealer relayed a message to me saying Chrysler looked at it, replaced plug and coil pack but was still having problems so they were going to look at the fuel rail. Eventually when it was finished, Chevy said they just had to "do an adjustment" after replacing plug and coil pack. That immediately left me with more questions because you shouldn't be adjusting the gap to these new spark plugs (and who doesn't check the gap before installing them?!), nor do I know of a way to adjust the coil pack. I called the Chrysler dealer and got to the bottom of it and he said the coil pack going is a common problem and replacing the spark plug and then reset the ECM is standard operating procedure. For a car 'professional' at the Chevy dealer, he sure knew little about cars and was horrible at relaying communications.
Looks like this is a common problem and I might just bring the tools and parts to replace on my own if I go on a long trip with this car. I'm just not keen on having my torque wrench bounce around in my car all the time.
The Chevy dealer I bought it from, whom was responsible for the warranty, was inept at doing anything other than using the OBDII scan tool to pull the same code as me. I had them bring it to the Chrysler dealer 2 miles away and handle the business-2-business charges, which worked out well. Even though the Chevy dealer wanted me to bring the car over, the contract on the warranty said otherwise and I refused. The Chevy dealer relayed a message to me saying Chrysler looked at it, replaced plug and coil pack but was still having problems so they were going to look at the fuel rail. Eventually when it was finished, Chevy said they just had to "do an adjustment" after replacing plug and coil pack. That immediately left me with more questions because you shouldn't be adjusting the gap to these new spark plugs (and who doesn't check the gap before installing them?!), nor do I know of a way to adjust the coil pack. I called the Chrysler dealer and got to the bottom of it and he said the coil pack going is a common problem and replacing the spark plug and then reset the ECM is standard operating procedure. For a car 'professional' at the Chevy dealer, he sure knew little about cars and was horrible at relaying communications.
1 - 2 of 24 Posts
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