Availability: 6 in stock
The side panel here is the GM part, numbered 87813676. It is catalogued under Covers & Caps > Panels & Plates.
Torque figures belong to the fastener and the joint rather than to the part, so the factory procedure is the reference rather than a general rule.
The part number is the thing to verify. Where the old part carries no legible number, a VIN and a photograph are enough for us to identify it. Leaves our US warehouse in one to two business days, and shipping is free over $59.