GM Service Manual Online
For 1990-2009 cars only

Notice: Do not use air powered tools in order to disassemble or assemble any vehicle component. Bolt torques are vital to diagnosis. You can detect bolt torques only when using hand tools. Improper bolt torques can contribute to vehicle repair problems.

Notice: Do not use air powered tools in order to assemble or disassemble transmissions. Use hand tools in order to properly determine bolt tightness. Improper bolt torque can contribute to transmission repair conditions, and this information, which is vital to diagnosis, can only be detected when using hand tools.