HomeAll RepliesReply To: Silverado 1500 High Country 5.3 V8 Oil Leak between the Engine and Trans Reply To: Silverado 1500 High Country 5.3 V8 Oil Leak between the Engine and Trans Sponsored May 12, 2024 at 8:42 am #812714 Parts Man1Participant Rear main seal. Mist drop the trans to repair it. Sponsored Subscribe to GM Authority For around-the-clock GM news coverage We'll send you one email per day with the latest GM news. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored