The P0700 code in your 2016 Toyota Tundra indicates a general transmission malfunction, and the shuddering on hills specifically suggests torque converter clutch (TCC) issues or clutch pack engagement problems. P0700 is an informational code—additional transmission codes will provide more specific information.
Why Shuddering Occurs on Hills
Hills place extra load on the transmission, requiring more torque converter clutch and clutch pack engagement force. When these components are marginal, they may hold under light load but slip and shudder when demanded to work harder. The extra load on hills exposes weaknesses.
Common Causes
Torque converter clutch shudder is common—the TCC material may be worn or contaminated. Degraded transmission fluid loses its friction properties. Slipping clutch packs under high load. Valve body issues affecting pressure under load. Solenoid problems affecting TCC or clutch engagement.
The 2016 Tundra Transmission
The 2016 Tundra uses the AB60E/F 6-speed automatic. This transmission is generally reliable but can experience TCC shudder, especially with age or if fluid maintenance has been neglected. Towing or heavy use accelerates wear.
Diagnostic Approach
Using Toyota Techstream, retrieve all transmission codes—P0700 will be accompanied by more specific codes. Check transmission fluid level and condition. Monitor TCC apply data during hill climbing. Check for TCC-specific codes like P0740-P0744. Test line pressure under load if possible.