Spongy brake pedal

Hi:
You most likely have a slight leak in your brake system, and it could become a safety issue, so you need to inspect your truck to look for a few clues to the problem.

Check the inside area behind each wheel, and look for signs of brake fluid.leaking, Check the level of the brake fluid in the brake fluid reservoir.
If you spot a leak, or the fluid is low, you need to get your brakes repaired or serviced soon. Top off the fluid if needed,and don't delay on getting this checked out !