2018 Chevy Tahoe 6.2L - Idles Rough
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Joined: Apr 2025
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Just wanted to update the thread in case anyone else encounters a similar issue.
Opened a case with GM Corporate and CC'd the CEO Mary Barra, shortly after i talked to someone from the corporate office who handled communications with the dealership. Come to find out they installed an aftermarket motor mount on my truck causing the problem....it should have been replaced with an OEM motor mount which contains hydraulic fluid and dampens the engine movement. Once it was replaced my truck went back to idling smoothly just like it did when i first owned it. Stay far away from any aftermarket motor mounts on the 6.2L and shame on the dealer for putting an aftermarket part on my vehicle initially....i could understand if it was a private mechanic but not at a GMC/Chevy dealership.
Opened a case with GM Corporate and CC'd the CEO Mary Barra, shortly after i talked to someone from the corporate office who handled communications with the dealership. Come to find out they installed an aftermarket motor mount on my truck causing the problem....it should have been replaced with an OEM motor mount which contains hydraulic fluid and dampens the engine movement. Once it was replaced my truck went back to idling smoothly just like it did when i first owned it. Stay far away from any aftermarket motor mounts on the 6.2L and shame on the dealer for putting an aftermarket part on my vehicle initially....i could understand if it was a private mechanic but not at a GMC/Chevy dealership.
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