
The Silverado's 8-speed and newer 10-speed automatics shift more frequently to keep the engine in an efficient band. Under trailer load, that translates to more clutch engagements and more heat cycling per mile than an unloaded truck experiences.

Use GM Dexron HP or the year-specific equivalent. Consider a proactive fluid and filter service around 60,000 miles if you tow regularly, even though it is not on the mandatory schedule for light-duty use.

A Silverado that just finished a long tow and then shifts harshly, hesitates, or flares between gears is telling you the fluid worked hard. Address it before the symptom becomes chronic.
Learn more in our best brakes for heavy towing guide.
Match transmission care with brakes rated for real towing.
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