GM Service Manual Online
For 1990-2009 cars only

CALIBRATION CHANGE THM 2004R 4TH GEAR SHIFT

THE FOLLOWING CHANGES HAVE OCCURRED ON THE THM 200-4R TRANSMISSION: 1.ALL MODELS, EXCEPT THE CU, WERE BUILT WITH A NEW DESIGN (RECALIBRATED) VALVE BODY. 2.THE FOURTH CLUTCH PLATES WERE CHANGED FROM A GROOVED SURFACE TO A FLAT SURFACE ON ALL MODELS. 3.THE ASSEMBLY SEQUENCE OF THE 3-4 ACCUMULATOR PISTON WAS CHANGED. THIS CALIBRATION CHANGE WILL ALTER THE FEEL OF THE 3-4 SHIFT. * SEE BULLETIN FOR INFO AND ILLUSTRATIONS *

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.