02-25-2019, 01:22 PM
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#44
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Drives: 2018 ZL1 coupe
Join Date: Nov 2018
Location: Prescott, Arizona
Posts: 589
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Quote:
Originally Posted by angryBits
Actually...
2015 ZL1 had audible knock on CA91 octane gas. The car always maxxed out the knock retard under medium-heavy throttle. I had to have the car tuned and voided my warranty but then it ran excellent.
2017 Grand Sport Rod Knock on Cyl #5 -- engine replaced under warranty. After the swap, it happened again on another cylinder (I forget which) so I gave the car back to them.
2017 Z06 Strong hesitation issues when applying moderate throttle around 4k RPM in gears 3,4,5,6,7. Dealership was never able to resolve it even though they did reproduce it. Guesses were fuel pump, traction control sensors, limited slip, etc.
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Wow. After all that, I probably wouldn't have bought another GM...
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