General Motors

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. […]

GM 287mm 4L60E converter tips help rebuilders General Motors’ new est 4L 60E converter, used in the 2003 and newer Trail Blazer and Envoy, has become […]

Rebuilders ‘weep’ woven clutch woes 245mm and 298mm woven carbon clutches  Do to many requests, the TCRA staff investigated the problem of woven carbon clutches plaguing […]

GM 245mm converter code creates confusion at rebuild General Motors’ four-digit converter code is confusing to say the least. When is a “J” not a “J” […]

245mm improvements While on the topic of the 245mm torque converter, we would like to share a few improvements that may reduce converter comebacks. First, we […]

4L60E 287mm Most commonly used in… …2003 and newer GM Envoy and Trail Blazer 4.2L .Most common areas of concern should be… …proper front cover finish […]

Converter Clutch Shudder Have you ever experienced converter clutchshudder on the late 4L60E torque converter with the higher stall codes? It has been reported by many […]

GM 4L80E are large in size, weight and in profits   By now many torque converter rebuilders are learning the limits of rebuilding the enormous 4L80E […]