Heat a grill pan over medium-high heat. Add the corn to the HOT pan and cook, until golden brown, about 15 minutes, turning it occasionally.
Let the corn cool then cut the kernels off the cob with a knife.
Place the avocado, onion, jalapeno, tomato, garlic, cilantro, lime juice, and sea salt; mix until well combined.
Add the cut corn kernels to the guacamole and stir until evenly combined; taste and re-season with sea salt or lime juice, if needed. Serve with tortilla chips. Enjoy.