C8 intermittent lurching/jerking
Thread Starter
Instructor
Joined: Dec 2000
Posts: 120
Likes: 1
From: Tulsa OK
C8 intermittent lurching/jerking
My 2021 Stingray has a problem in that it sometimes drives rough and has a slight lurching, jerking, or hesitation. It is fine at wide open throttle. At first I thought it was bad gas, but the problem has persisted for 2 months (3 week vacation in July in a Bronco). I took it to the local dealer that I purchased from and the tech read a code and decided to replace the auto tranny sensor. That did not solve the problem and they appealed to GM tech support for suggestions. They have not responded and my C8 is just sitting at the dealer service dept. Have other C8 owners experienced this issue or have a suggestion?
Instructor
Joined: May 2021
Posts: 233
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From: Minnesota
Race Director
Joined: Mar 2007
Posts: 11,269
Likes: 8,410
My 2021 Stingray has a problem in that it sometimes drives rough and has a slight lurching, jerking, or hesitation. It is fine at wide open throttle. At first I thought it was bad gas, but the problem has persisted for 2 months (3 week vacation in July in a Bronco). I took it to the local dealer that I purchased from and the tech read a code and decided to replace the auto tranny sensor. That did not solve the problem and they appealed to GM tech support for suggestions. They have not responded and my C8 is just sitting at the dealer service dept. Have other C8 owners experienced this issue or have a suggestion?
Instructor
Joined: Feb 2011
Posts: 134
Likes: 43
From: North Carolina
Everyone Read This!!!!
SEE TECH SERVICE BULLETIN 22-NA-080.
The Bulletin involves the Camshaft Actuator Magnet which helps control the time and cycling of the camshaft. It can stick and throw off the timing resulting in shaking, shuddering, and jerking of the car at low speeds. At high speeds the engine will shudder slightly. The telltale sign at high speed is the Tach needle bouncing instead of holding steady.
The dealer can run a test with the Scan Tool to determine if the actuator is sticking. The Bulletin has a "normal" graph shown in it. If the actuator is off by more than 3 degrees, it must be replaced. THAT involves dropping the engine! Yes, $8000 cost for a cheap $30 part.
Bulletin Attached.
The Bulletin involves the Camshaft Actuator Magnet which helps control the time and cycling of the camshaft. It can stick and throw off the timing resulting in shaking, shuddering, and jerking of the car at low speeds. At high speeds the engine will shudder slightly. The telltale sign at high speed is the Tach needle bouncing instead of holding steady.
The dealer can run a test with the Scan Tool to determine if the actuator is sticking. The Bulletin has a "normal" graph shown in it. If the actuator is off by more than 3 degrees, it must be replaced. THAT involves dropping the engine! Yes, $8000 cost for a cheap $30 part.
Bulletin Attached.
Last edited by TEvans; Oct 6, 2025 at 10:26 PM.
Race Director
Joined: Mar 2007
Posts: 11,269
Likes: 8,410
SEE TECH SERVICE BULLETIN 22-NA-080.
The Bulletin involves the Camshaft Actuator Magnet which helps control the time and cycling of the camshaft. It can stick and throw off the timing resulting in shaking, shuddering, and jerking of the car at low speeds. At high speeds the engine will shudder slightly. The telltale sign at high speed is the Tach needle bouncing instead of holding steady.
The dealer can run a test with the Scan Tool to determine if the actuator is sticking. The Bulletin has a "normal" graph shown in it. If the actuator is off by more than 3 degrees, it must be replaced. THAT involves dropping the engine! Yes, $8000 cost for a cheap $30 part.
Bulletin Attached.
The Bulletin involves the Camshaft Actuator Magnet which helps control the time and cycling of the camshaft. It can stick and throw off the timing resulting in shaking, shuddering, and jerking of the car at low speeds. At high speeds the engine will shudder slightly. The telltale sign at high speed is the Tach needle bouncing instead of holding steady.
The dealer can run a test with the Scan Tool to determine if the actuator is sticking. The Bulletin has a "normal" graph shown in it. If the actuator is off by more than 3 degrees, it must be replaced. THAT involves dropping the engine! Yes, $8000 cost for a cheap $30 part.
Bulletin Attached.
