My truck is sluggish when traveling uphill.
Hello. There could be a problem with your transmission's lower gears. The transmission uses the lower gears when the truck has to pick up speed, go up hills, and haul heavy loads. If the low gears are not operating properly it could cause the truck to be sluggish. There could also be a problem with your spark plugs. If the spark plugs are worn out it will cause the truck to be sluggish under heavy loads, such as going up a hill. I suggest you have a certified technician check your truck for these conditions.
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