In January the check engine light came on in my 2007 GMC Yukon Denali. There was also a
message displayed that the Stabiltrack needed to be serviced. The car was also handling awkwardly during driving. I brought my car into Firestone on S. Virginia and they ran a diagnostic test and determined that there was a transmission error. Due to the proprietary nature on GMCs software, they were unable to determine what the issue was and recommended a local transmission shop. On February 7 I brought my car into Winkel/Reno GMC to service this issue. They secured the same transmission error and said that they needed to upgrade/update the operating software to see if that fixed the problem. They reprogrammed the system and the car was operating normally. The cost of the initial visit per the attached invoice was $206.41.
(Item #1) The car operated normally until May 4, at which point the same error messages came up.
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