March 21, 2013
Symptoms:
- Erratic shifts
- 2-3 Shuttle
- Temperature-sensitive shifts
- No 3rd
- No 4th
- 2nd Gear starts
Cause:
The non-anodized valves score and seize in the boreCorrection:
These drop-in valves are hardcoat anodized with annular grooves which eliminate surface wear and reduce valve hang-up.4T60-E,4T65-E
4-3 Manual Downshift Valve
Part No.84754-39K
In 4T60-E units, fits '91-later units only.
You need this if... View Instructions Find a DistributorGM 4T60-E and 4T65-E shift valves have changed materials over the years, starting with steel, changing to silver-colored uncoated raw aluminum, and finally anodized aluminum. These units can have a combination of these materials with the silver-colored uncoated raw aluminum being especially problematic due to scoring/scratching and intermittent sticking. Sonnax 4-3 manual downshift valve 84754-39K eliminates surface wear and reduces valve hang up.
- Hardcoat anodized aluminum valves combat premature wear
- Annular grooves to center the valves and reduces sticking caused by side loading
- Drop-in Zip Valve™ installs quickly and easily
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on.看到所有Sonnax阀体outs.
GM 4T65-E Valve Body Layout
You need this if...
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.
