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Vehicles with GM 200-4R, 4L60 and 4L60-E transmissions have numerous converter overheat lockup complaints. These include no lockup or lockup immediately after 2nd ...Read More
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Sonnax impeller hub GM-90-71G is an excellent option for rebuilding GM 280mm (4L60-E) “VJCX” converters which are experiencing higher-than-normal pump rotor failur...Read More
High-speed steel reamer tool Kit for 77917-06, 77917-07
Tool kit for 77754-09K, 34200-16K, SC-4L80E and SC-4L60E.
In GM 4L60-E, 4L65-E and 4L70-E units, the AFL valve is a solenoid feed regulator valve that feeds the EPC solenoid and shift solenoids. The OE AFL valve design ha...Read More
The plastic OE torque converter clutch solenoid snouts are prone to breakage causing them to leak oil that should be directed to the converter clutch apply valve. ...Read More
The 3-2 control valve spring in late-model GM 4L60-E, 4L65-E and 4L70-E valve bodies often breaks, and can cause a 3-2 bind and/or 2-4 band to overheat. This sprin...Read More
Sonnax stator support shaft 77918S-K kit for GM 4L60 and 4L60-E units eliminates sleeve rotation by mechanically fastening the sleeve in place with a set screw, fu...Read More
Sonnax oversized O-ring GM-O-17V can be used to prevent leakage in GM 4L60-E piston/damper assemblies and GM 265mm LU viscous damper assemblies with somewhat worn ...Read More
In GM 4L60-E, 4L65-E abd 4L70-E units, wear at the shift valve spools and bore lands causes loss of critical hydraulic pressure which, depending on the wear locati...Read More
In GM 4L60-E, 4L65-E and 4L70-E units, the hammering effect of the 3-4 relay and/or 3-4 shift valves can cause the end plugs to wear, resulting in loss of 4th sign...Read More
Reamer for SERV (GM Reman) Valve Bodies
Reamer for 77754-ISO, 77754-03K & 77754-04K
Reamer for 77754-03K, 77754-04K and 77754-ISO
It is common for one of the three plastic retention tabs to break on the wiring harness case pass-through connector in GM 4L60-E, 4L65-E and 4L70-E units. This all...Read More
GM 4L60-E, 4L65-E and 4L70-E transmissions often have trouble shifting into or holding 4th Gear due to excess wear in the sequence valve bore. This wear allows vit...Read More