antonhofmann2
Trax Automatic Transmission Problems
Summary of the thread
A 2013 Chevrolet Trax with automatic transmission issues was experiencing implausible shifting, a transmission warning light, and emergency mode activation. The problem was identified as undervoltage affecting the transmission control module. The suggested solution was to check the battery and charging system. After replacing the battery and performing a transmission oil change, the vehicle's performance improved significantly.
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4 comment(s)
antonhofmann2 (community.author)
Undervoltage, you say? I wouldn't have thought of that! How did you figure it out on your Opel? Was it just a dead battery?
nelezimmermann7
Well, the battery seemed fine at first. But a proper test showed it was on its way out and causing voltage drops. The Insignia’s transmission is also automatic, like yours. These systems need a stable voltage. I’d suggest getting your battery and alternator checked by a workshop. It might be a simple fix, but get it diagnosed professionally.
antonhofmann2 (community.author)
Turns out you were spot on! Took it to a shop, and it was indeed undervoltage. They replaced the battery and did a transmission oil change while they were at it. Total cost: 240€. Runs like a dream now. Thanks for the tip!
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CHEVROLET
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TRAX
nelezimmermann7
Sounds familiar. I had similar issues with my old Opel Insignia. Same symptoms: weird shifting, warning lights, emergency mode... Turned out to be undervoltage messing with the transmission control module. Automatic gearboxes are sensitive to that. Have you checked your battery and charging system?