2000 GMC Sonoma Owner's Manual - Page 356

Automatic Transmission Check Check the transmission fluid level; add if needed. See "Automatic Transmission Fluid" in the Index. A fluid loss may indicate a problem. Check the system and repair if needed. Hydraulic Clutch System Check Check the fluid level in the clutch reservoir. See "Hydraulic Clutch Fluid" in the Index. A fluid loss in this system could indicate a problem. Have the system inspected and repaired at once. At Least Once a Year Key Lock Cylinders Service Lubricate the key lock cylinders with the lubricant specified in Part D. Body Lubrication Service Lubricate all body door and fuel door hinges, latches and locks including the glove box, console doors, the body hood, secondary latch, pivots, spring anchor, release pawl, and any moving seat hardware. Lubricate the hood safety lever pivot and prop rod pivot. Part D tells you what to use. More frequent lubrication may be required when exposed to a corrosive environment. At Least Four Times a Year Tailgate Lubrication Service Lubricate tailgate latch bolt, handle assembly pivot points, and hinges with lubricant recommended in Part D. 7-44