01-17-2021, 06:50 AM | #1 |
Drives: 21' LTI, '18 Traverse, '15 Mazda 6 Join Date: Oct 2020
Location: At the end of the DHL/Amazon Runway, KY
Posts: 183
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New LT1 Nightmare. Who else had one blow up on day 1?
So after countless debating and searching for the perfect Camaro I finally pulled the trigger on a new 2021 LT1. Flew out to greater DC to buy and then drove to meet up with family before coming. Everything was all sunshine and rainbows until around mile 250 it started shaking and the esc and check engine lights started flashing. Now I am stuck 9 hours from home with no car. Dealer is not open on Sunday to diagnose. The only code onstar is showing is P0300 which i think might be O2 sensor? My wife's 18 traverse just had one go out and I feel like that was the issue but hers was post cat so no major issue. Its been on the lot for 4 months so I don't think it was old enough for the valve spring issues?
Not really sure what to do. If I get a rental and drive home and its something that can be fixed on Monday its going to be dumb to drive 9 hours and back but on the other side I have family and work obligations at home. There are no good choices here. |
01-17-2021, 07:00 AM | #2 |
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This really sucks! I fear you are another victim of the infamous "broken valve" spring issue. I hope I'm wrong and that it is something easy and quick to fix.
It's a hard call but I think I'd get the rental and get home. Then deal with the car once the dealership gives you their findings. Good luck!
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2016 Camaro 1SS Hyper Blue 6MT NPP
2010 Camaro 2SS Cam/Headers/CAI/3.91 gears 476 rwhp/440 rwtq (sold) |
01-17-2021, 07:18 AM | #3 |
Drives: 2022 1SS 1LE A10 BCD WCT+PDR Join Date: Mar 2008
Location: Johnstown, PA
Posts: 3,200
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Disconnect the battery to clear the codes. See what happens. If it is something simple and non-mechanical (valvespring) it might run fine for a short time before it throws the same code again. If it does this, then it's not the valve spring.
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2022 1SS 1LE A10 BCD WCT+PDR2014 1SS 1LE NPP RECARO SIM-SOLD1995 Z28 M6 GSC PGM-SOLD1975 NOVA COUPE 300HP 350 TH350 FLASH RED-SOLD
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01-17-2021, 07:47 AM | #4 |
Drives: 2013 / 2SS / RS / L99 Join Date: Feb 2009
Location: Tennessee
Posts: 827
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Bet it is a broke spring. That means a complete new set (not the bad batch) for both heads. How far is the car from the selling dealer ?
Last edited by VQ35DE; 01-17-2021 at 12:50 PM. |
01-17-2021, 08:20 AM | #5 |
Drives: 21' LTI, '18 Traverse, '15 Mazda 6 Join Date: Oct 2020
Location: At the end of the DHL/Amazon Runway, KY
Posts: 183
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I'm about 2.5 hours from the selling dealer so GM towed it to the closest one.
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01-17-2021, 11:35 AM | #6 |
Drives: 21' LTI, '18 Traverse, '15 Mazda 6 Join Date: Oct 2020
Location: At the end of the DHL/Amazon Runway, KY
Posts: 183
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Yeah, I pulled the codes off it just now. Multiple misfires on both banks, enough to trip both Sets of O2 sensors for air fuel issues and to cause it not to start. I think I'm renting a car to drive home... definitely doesn't seem like a 1 day fix.
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01-17-2021, 12:48 PM | #7 |
Drives: 2013 / 2SS / RS / L99 Join Date: Feb 2009
Location: Tennessee
Posts: 827
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How far away was the car from the closest dealer ?
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01-18-2021, 08:20 AM | #8 |
Drives: 21' LTI, '18 Traverse, '15 Mazda 6 Join Date: Oct 2020
Location: At the end of the DHL/Amazon Runway, KY
Posts: 183
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Not very, I think like 7 miles
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01-18-2021, 09:05 AM | #9 | |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,574
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Quote:
According to GM, the valve spring issue affects engines made between June 1st and Sept 15th, so the time range does compute if the car sat 4 months on the dealer lot: https://gmauthority.com/blog/2020/09...gm-v8-engines/
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2018 Camaro 2SS — G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune 1100 - 1/30/18 | 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 | 3800 - 2/26/18 4300 - 2/27/18 | 4B00 - 3/01/18 4200 - 3/05/18 | 4800 - 3/14/18 5000 - 3/16/18 | 6000 - 3/19/18 |
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01-18-2021, 09:11 AM | #10 |
Drives: 2021 Acura RDX SH-AWD Advance Join Date: Aug 2019
Location: Cleveland, Ohio
Posts: 480
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Damn, this just so totally sucks! I'm sorry you're dealing with this!
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01-18-2021, 10:16 AM | #11 |
Drives: 21' LTI, '18 Traverse, '15 Mazda 6 Join Date: Oct 2020
Location: At the end of the DHL/Amazon Runway, KY
Posts: 183
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Yeah could be worse. I decided to visit family so it could have broke down in the West Virginia mountains in the snow instead.
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01-18-2021, 10:45 AM | #12 |
Drives: 21' LTI, '18 Traverse, '15 Mazda 6 Join Date: Oct 2020
Location: At the end of the DHL/Amazon Runway, KY
Posts: 183
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Should I ask if they can port the heads while they're in there?
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01-18-2021, 05:09 PM | #13 |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,574
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Heck, make them slap on a Maggie and LT4 injectors while they're at it
__________________
2018 Camaro 2SS — G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune 1100 - 1/30/18 | 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 | 3800 - 2/26/18 4300 - 2/27/18 | 4B00 - 3/01/18 4200 - 3/05/18 | 4800 - 3/14/18 5000 - 3/16/18 | 6000 - 3/19/18 |
01-20-2021, 07:47 AM | #14 |
Drives: 21' LTI, '18 Traverse, '15 Mazda 6 Join Date: Oct 2020
Location: At the end of the DHL/Amazon Runway, KY
Posts: 183
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Should I be concerned about 1,000+ misfires on an engine that's probably not fully broken in yet?
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