CROSSBOLT 0 Posted October 18, 2019 Share Posted October 18, 2019 Hello? Anyone home? Pretty old posts but here goes: Received a recall on the Trans. Control Module. Dealer unaware of recall. Has no answers to my questions. GM recall center cannot answer my questions. So I will ask you. How will TCM reprogramming affect my gas mileage? Shifting? Thanks in advance. Karl Link to post Share on other sites
MarshmallowSpark2017 4 Posted January 1, 2020 Share Posted January 1, 2020 This recall isn’t coming up when I look it up through all data? Not sure there’s any answers officially from GM but I doubt any reprogramming of the Tcm will change the shifting or mileage in a negative way, these cars are meant for low cost transportation so if there was some sort of modification to the cvt operation in terms of performance it would only be towards better fuel economy. My guess is it’s just a debug though. Link to post Share on other sites
Ray Dockrey 97 Posted January 2, 2020 Share Posted January 2, 2020 What year Spark do you have? There was a recall for 2014 and 2015 CVT's for reprogramming but I know of nothing else. Link to post Share on other sites
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