Century L4-151 2.5L (1989)
Part Number
Description
8666494
Assembly, Manual Valve with Thermal Orifice
Parts are currently available from GMSPO.
SERVICE MANUAL REFERENCE
Whenever servicing a THM 125C/HYDRA-MATIC 3T40 for this condition, refer to the procedure given in the 125C/HYDRA-MATIC 3T40 Unit
Repair Section of your Service Manual.
SERVICE NOTES
The retainer clip for the temperature orifice must be 11.2 mm +/- 0.2 mm (0.44" +/- .008") inside the link end of the Manual Valve for proper operation.
If the Thermal Element has moved forward due to a retaining clip that has fallen out, the vehicle may exhibit a loss of Drive and/or Reverse. A clip that
has fallen out may be located in the bottom pan.
