Be sure that your tank is full before you enter the parks. No gas is sold within park boundaries.

The closest gas stations to the Sequoia National Park entrance on Highway 198 are in the town of Three Rivers. 
The closest gas stations to the Kings Canyon National Park entrance on Highway 180 are along the highway.

Gasoline is also sold on neighboring Forest Service lands. It is available all year at Hume Lake, 11 miles north of Grant Grove Village off Hwy 180.
From late spring into fall, there are two other options: Stony Creek gas station is open between Lodgepole and Grant Grove on the Generals Highway (Check the park newspaper for current hours or call 1-866-KCANYON or 1-559-565-3909). Kings Canyon Lodge is on Hwy 180 between Grant Grove and Cedar Grove. Call for hours of service:  1-559-225-2405.