Video: Solenoid testing with GM transmissions
Testing many solenoids can be easy, but not so with the GM TEHCM units. Since the solenoids are contained within a single housing and connected to a TCM, testing is much more difficult. There are however test kits available that can make the process relatively simple. The test kits are produced by Kent-More and are
Valve-Body Qualification
Although traditional visual indicators such as the wiggle, deflection, flashlight and visual bore-wear inspection are still useful, we’ll start this review with pressure and vacuum before finishing up with valve-body test stands.
Necessary Tools
One of the responsibilities of a reputable transmission shop is to prevent problems before they occur. Checking the quality of the parts that are going into the transmission is one way to achieve this. Checking the hardness of the metal parts is an important part of this process.
