Roger
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1st Gear
Joined: Aug 2025
Posts: 1
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Roger
I have a 2016 Z06 with 26,000 miles. My problem is when doing normal acceleration after the car warms up. It wants to lunge like you’re pumping the foot feet it jerks. Add it in the shop now most of the time for a year Two different GM dealers. It doesn’t code anything. They put their computer on it and drive it, but it doesn’t code so the technicians don’t know what to fix. I’m at wits end with them. Has anyone else had a problem like this?
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,626
Likes: 4,070
From: Cape Coral, Florida
Normally dealerships and general repair shops need to see a trouble code not to diagnose it but to know what parts need to be changed...if they are any good they should be looking at some basic “live data” and check it while the car is experiencing this issue while driving...find a diagnostic shop in your area where these trained diagnosticians know what to look at...changing parts and be able to diagnose a car are 2 different skillsets....I don't know where you live so I can't recommend any shops like these.
Last edited by C5 Diag; Aug 27, 2025 at 10:13 PM.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
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From: Charlotte, NC (formerly Endicott, NY)
Check the throttle body to see if it needs cleaning. A dirty throttle blade or throat can cause irregular engine operation until the throttle opens sufficiently to allow more air in. It's not hard to check or clean, so it's something that can be done at home using screw drivers, maybe a flashlight, a proper solvent that won't damage anything and a clean microfiber rag.
Bill
Bill
