chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

All Other Service Bulletins for Valve Body: > < A/T - Delayed `R' to `D' In Cold Operating Conditions
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Assembly, Manual Valve with Thermal Orifice

Parts are currently available from GMSPO.

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.
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.

All Other Service Bulletins for Valve Body: > < A/T - Delayed `R' to `D' In Cold Operating Conditions