Rick's Free Auto Repair Advice

Posts Tagged: 2-3 shift flare when cold

Transmission slips GM truck

Transmission slips GM truck GM has issued a service bulletin to address a Transmission slips GM truck, transmission flares issue on several GM trucks. If you own a 2012 Chevy Avalanche, Silverado, Suburban, Tahoe, or GMC Sierra, Yukon with the 5.3L engine and 6L80 automatic Transmission, then read this post. The Transmission slips GM truck issue appears as a 2-3 shift flare when cold, especially after sitting for a while. The problem is most prevalent in colder climates and it caused by a software issue in the transmission control module … Read More


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