A must for the serious GM do-it-yourselfer. Covers THM200-4R, THM350, THM400 and THM700-R4 automatic transmissions. Includes fundamentals, diagnosis, step-by-step overhaul procedures, modifications, transmission identification, in-vehicle repairs and adjustments, professional tips and tricks, tools and equipment transmission removal and installation, source list, glossary of terms, and information about improving your automatic transmission. Over 1000 step-by-step photos take the mystery out of automatic transmissions. Coverage added for THM 125/125C, THM 3T40, THM 440-T4 and THM 4T60 Front-wheel drive transaxles.