General Motors

GM Usage Charts 2001 FWD Usage Chart Vehicle  Engine Transmission Trans. Code Converter P/N Converter Diameter  K-Factor STR ECCC Converter Code           […]

Sonnax GM Info from Bob Sonnax :The following information is compiled from post-rebuild drive-ability complaints, which may or may not be related to the converter .. […]

Allison 1000 Model 280 ALLISON 1000, AS USED IN THE NEW GM ISUZU DIESEL     OVERALL HEIGHT: 7.676" OVERALL DIAMETER: 13.375" MAX ALLOWABLE OEM  LOCK […]

245mm Viscous (Damper Clutch) Many calls have come into TCRA regarding a way to check the clutch damper assembly, because it is a sealed unit. Our […]

298mm clearance problems and solutions Worn turbine surface Turbine surface after proper refinishing Part Number: GM-WP10-OE When referring to clearance on any torque converter, there are […]

GM damper assemblies cause converter contamination In past issues we have reported about the importance of cleanliness. Never has it been more true than with the […]

4L60E and 4L65E transmission suffers from holiday travel blues Now that we have reached peek travel time for the summer season, a little special care may […]

Gm 298mm early design bearing failure Photo A Photo B Another popular topic frequently brought up by members is how to prevent premature bearing failure on […]

GM 4L80E Most commonly used in……1990 and newer GM and GMC trucks and vans Most common areas of concern should be……inspection of lockup piston, proper T.I.R. […]