Auto transmission in drive not shifting up

Hey, my name is Dusty, and I'm one of the auto experts on RepairPal's Car Genius team. I'm here to help! The issues you're experiencing with your Silverado's automatic transmission struggle suggest potential problems with the transmission valve body, internal mechanical components, or possibly the transmission control module (TCM) and wiring. If the transmission fluid is clean, the correct type and level, and the issue persists, it may be necessary to consult a professional transmission specialist. They can perform in-depth tests and inspections to pinpoint the exact cause of the problem. This approach will ensure proper diagnosis and effective repairs to restore normal shifting performance in your Silverado. If you have any other questions or would like help finding a RepairPal Certified shop in your area, call us! 877-913-1554