Q: Transmission not pulling

We would have to know if the vehicle is automatic or manual, and the exact nature of the problem. If it is an automatic transmission, I would check the transmission fluid and make sure it is at the correct level and not excessively dirty. Automatic transmissions operate using fluid pressure, so low, or contaminated fluid will prevent them from functioning correctly. If it is a manual transmission that is not engaging properly, then I would suspect the clutch disc may be worn. The clutch disc is located inside of the transmission, so a proper diagnosis of the transmission would be needed before any repairs can be made. I would recommend having the vehicle properly assessed by a knowledgable technician, such as one from YourMechanic, in order to determine the exact nature of the problem.