SERVICE REPLACEMENT TRANS ASSY (SRTA) UPDATE

SUBJECT: SERVICE REPLACEMENT TRANSMISSION ASSEMBLY (SRTA) MODEL UPDATE

MODELS: 1982-90 C/K, R, S/T LIGHT DUTY TRUCKS AND G, L, M VANS WITH 4L60 AUTOMATIC TRANSMISSIONS

THIS BULLETIN CANCELS AND REPLACES GMC TRUCK SERVICE BULLETIN 88-T-149 DATED AUGUST, 1988 TO UPDATE THE MODELS AND YEARS INVOLVED. ALL COPIES OF 88-T-149 SHOULD BE DISCARDED.

BULLETIN COVERS

This bulletin expands the list for all SRTA model applications of the HYDRA-MATIC 4L60 through the 1990 model year.

SRTA ADVANTAGES

- A SRTA is the product of a highly successful, customer satisfaction driven program providing the technician with a service alternative when addressing diagnostic and overhaul concerns.

- All SRTA units are designed and remanufactured to current engineering specifications and are often less costly than a major overhaul.

- GMSPO Parts Distribution Centers are committed to 48 hour maximum delivery time for all SRTA models, with no VIP charges.

IN THE INTEREST OF CUSTOMER SATISFACTION, SRTA MODELS SHOULD ONLY BE CONSIDERED WHEN THE PROJECTED COST OF REPAIR EXCEEDS THE COST OF A SRTA REPLACEMENT

SERVICE INFORMATION

Cooler flushing MUST be performed whenever a transmission is removed for service. It is essential to flush the cooler before SRTA installation, major overhaul, in any case of pump or torque converter replacement, or when fluid contamination is suspected.

SERVICE PARTS INFORMATION

SRTA Part Model Model Number Description Year(s) Model(s) Replaced

2M2 8654957 4.1L K-Truck 1982-84 9M2, 9TC, 3TC, 4TC 3ME 8659920 5.OL/5.7L C/G-Truck (Calif.) 1983 3ME, 3TE 4MB 8659910 4.lL C/G-Truck (Calif.) 1983-84 3MB, 3VN, 4MB, 4VN 4MJ 8659909 4.1L C/G-Truck 1982-84 9MB, 9MC, 9TW, 9T6, 3MC, 3MJ, 4MC, 4MJ 4VA 8659908 2.OL S-Truck 1983-84 3T2, 3VA, 4VA 5MG 8659968 6.2L Diesel C-Truck 1984-85 4MG, 4VE, 4VX, 5MG, 5VE 5ML 8647929 2.8L S-Truck 1983-85 3ML, 4ML, 5ML 5MP 8659966 2.8L S-Truck (Calif.) 1983-85 3MP, 4MP, 5MP 5MS 8659967 2.8L T-Truck (Calif.) 1983-85 3MS, 4MS, 5MS 5T7 8647931 2.8L T-Truck 1983-85 3T7, 4T7, 5T7 5TM 8659923 6.2L Diesel K-Truck (Calif.) 1984-85 4TM, 5TM 5VK 8659913 4.3L M-Van 1985 5VK 5VL 8659914 4.3L M-Van (Calif.) 1985 5VL 6FA 8649947 4.3L M-Van (Calif.) 1986 6FAM 6MC 8649905 2.5L M-Van 1985-86 5VC, 6MCM 6MD 8659918 5.OL/5.7L C/G-Truck 1982-86 9TE, 9ME, 9TJ, 9M7, 9T5, 9MD, 3MD, 3MK, 3VH, 4MD, 4MK, 4VH, 5MD, 5MK, 5VH, 6MDM, 6MKM 6MH 8659922 6.2L Diesel C-Truck 1982-86 9MH, 9TN, 3MH, 3TL, 3VJ, 4MH, 4TL, 4VJ, 5MH, 5TL, 5VJ, 6MHM, 6TNM 6MM 8659912 4.3L C-Truck (Calif.) 4.3L G-Van 1985-86 5MM, 5VG, 6MAM, 6MMM 6MR 8659915 4.3L K-Truck 1985-86 5VZ, 6MRM 6MT 8649904 2.5L T-Truck 1985-86 5MT, 6MTM 6MX 8659911 4.3L C-Truck/G-Van 1985-86 5MX, 5VF, 6MFM, 6MXM 6MW 8659921 5.7L K-Truck (Calif.) 1983-86 3MW, 4MW, 5MW, 6MWM 6PR 8649903 2.5L S-Truck 1985-86 5PR, 6PRM 6TA 8649907 2.8L T-Truck (Calif.) 1986 6TAM 6TB 8649906 2.8L S-Truck (Calif.) 1986 6TBM 6TJ 8659919 5.OL/5.7L C/G-Truck (Calif.) 1984-86 4ME, 4TE, 5ME, 5TE, 6MPM, 6TJM 6TK 8649921 5.OL/5.7L K-Truck 1982-86 9M4, 9TH, 9M5, 9TK, 3TH, 3TK, 4TH, 4TK, 5TH, 5TK, 6TKM 6TR 8649929 6.2L Diesel K-Truck 1982-86 9M6, 9TP, 3TP, 3TS, 3T8, 3TZ, 4T8, 4TZ, 5T8, 5TZ, 6TRM 6TW 8659916 4.3L K-Truck (Calif.) 1985-86 5TW, 6TWM 9MA 8663959 4.3L R/G-Truck 1987-89 7MM, 8MA, 9MA 9ML 8663965 5.OL C-Truck 1987-89 7ML, 8ML, 9ML 9PB 8663973 6.2L Diesel C-Truck 1987-89 7PB, 8PB, 9PB 9PC 8663974 6.2L Diesel C-Truck 1987-89 7PC, 8PC, 9PC 9TJ 8663979 5.OL R/G-Truck 1987-89 7MU, 8TJ, 9TJ 9TN 8773982 6.2L R/G-Truck 1988-89 8TN, 8MH, 9TN, 9MH 9TU 8663983 5.7L R/G-Truck 1987-89 7TU, 7MW, 8TU, 8MW, 9TU, 9MW OCB 8671954 4.3L C-Truck 1987-90 7MF, 7MD, 8MF, 8MD, 9MF, 9MD, OCB, OCC OCF 8671955 5.OL C-Truck 1987-90 7MD, 7MK, 8MD, 8MK, 9MD, 9MK, OCC, OCF OCJ 8671957 5.7L C-Truck 1987-90 7MP, 7MZ, 8MP, 8MZ, 9MP, 9MZ, OCJ, OCH OKA 8671958 4.3L K/V-Truck 1987-90 7MR, 8MR, 9MR, OKA OKC 8671962 5.7L K/V-Truck 1987-90 7TX, 8TX, 9TX, OKC OKL 8671996 5.OL K/V-Truck 1987-90 7TK, 8TK, 9TK, OKL, OKB OKM 8673938 4.3L K/V-Truck 1987-90 7MR, 8MR, 9MR, OKM OKR 8671997 5.7L K-Truck 1990 OKR OLA 8671989 6.2L Diesel R-Truck 1990 OLA OLC 8671986 6.2L Diesel R/G-Truck 1990 OLC OLD 8671985 6.2L Diesel Truck 1990 OLD, OLB OLF 8671988 6.2L Diesel K-Truck 1990 OLF OMB 8671973 2.5L M-Van 1989-90 9MC, OMB OMJ 8671966 4.3L M-Van 1988-90 8FM, 9FM, OMJ OMN 8671981 4.3L L-Van 1990 OMN OMS 8671982 4.3L HO M-Van 1990 OMS ORA 8671978 5.7L R-Truck 1990 ORA OSA 8671970 2.5L S-Truck 1989-90 9PR, OSA OSH 8671969 4.3L S-Truck 1989-90 9TH, OSH OTL 8671967 4.3L T-Truck 1989-90 8TL, 9TL, OTL OWA 8671974 4.3L G-Truck 1990 OWA OWB 8671975 5.OL G-Truck 1990 OWB OWC 8671976 5.7L R/G-Truck 1990 OWC

Parts are currently available from GMSPO.

NOTE: Part numbers are accurate at the time of printing and subject to change.

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.