10-18-2020, 02:02 AM | #1 |
Drives: 2018 ZL1 A10 Join Date: May 2012
Location: British Columbia, Canada
Posts: 1,372
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18 ZL1 running like crap...comm codes
18 ZL1 is running like crap! Last week I got hit by a commercial mudflap that fell off a truck. Bounced on Hwy and fluttered on my grill/hood before sliding under car. Broke the belly Pam under engine bay and other cosmetic damage. Drove it home and felt fine.
2 days ago, drove about 30 kms and CEL started flashing, noticed engine stuttering. I had a 300 code, random misfire. Found a loose exhaust clamp behind my 2” header collector. Today, I Have communications codes 100 ECM/PCM,101 TCM, 121 ABS, 140 BCM but no misfire codes. Car starts good, drives fine if I don’t accelerate hard! Feels like tranny is acting funny and can hear engine stumbling. Happens in D or when paddle shifting. Put car on lift and can’t see any broken wires or obvious damage from mudflap, other than broken belly pan. Looking for a wiring diagram showing all ground connections. . Amy other Ideas? TIA .
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10-19-2020, 09:11 AM | #2 |
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Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
Location: St. Charles, IL
Posts: 18,663
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I would take the front bumper off and start looking through it. Has to be something that got damaged. A small short can go a long way to screw things up. The tcm is also behind the bumper. I would follow the wires from the ecm to the tcm very closely.
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10-19-2020, 10:54 AM | #3 |
Drives: 2019 ZL-1 Join Date: Feb 2009
Location: Troy, MI & Naples, FL
Posts: 2,019
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I would take it to a dealership/repair shop where they can hook it up. I bet some connections got damaged/stressed and is causing these issues.
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2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles...
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10-19-2020, 01:35 PM | #4 |
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Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,061
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Agreed with all of the above. The electronics on this car are pretty reliable so I suspect something got loose or a connector broke. That can be a frustrating process to self diagnose. I’d take it to a dealership.
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2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm
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