In a large skillet, heat the oil over medium-high heat and brown the pork chops on both sides; transfer to the slow cooker.
Add garlic to drippings; cook and stir for 1 minute until golden. Stir in the next 4 ingredients (soy sauce through red pepper). Cook and stir until sugar is dissolved.
Pour over chops. Cook on LOW for 8 to 9 hours or HIGH for 4 to 5 hours, or until meat is tender.
Remove chops.
Combine cornstarch and cold water until smooth. Gradually stir into slow cooker. Return chops to slow cooker and cook for 30 minutes more or until sauce is slightly thickened.