2011 Chevrolet Silverado 1500 Regular Cab Owner's Manual - Page 425

Vehicle Care 10-19 Manual Transmission Fluid It is not necessary to check the manual transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to your dealer service department and have it repaired as soon as possible. See Recommended Fluids and Lubricants on page 11‑8 for the proper fluid to use. When to Check and What to Use How to Check and Add Fluid Visually check the brake/clutch fluid reservoir to make sure the fluid level is at the MIN (minimum) line on the side of the reservoir. The brake/hydraulic clutch fluid system should be closed and sealed. Do not remove the cap to check the fluid level or to top‐off the fluid level. Remove the cap only when necessary to add the proper fluid until the level reaches the MIN line. Hydraulic Clutch It is not necessary to regularly check brake/clutch fluid unless you suspect there is a leak in the system. Adding fluid will not correct a leak. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. The brake/hydraulic clutch fluid reservoir cap has this symbol on it. The common hydraulic clutch and brake master cylinder fluid reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview on page 10‑6 for reservoir location.