SRTA PROGRAM (4L80-E/4L80-EHD) SERVICE INFORMATION

Subject: SERVICE REPLACEMENT TRANSMISSION ASSEMBLY PROGRAM (SRTA)

Model and Year: 1992 C/K, G AND P TRUCKS WITH 4L80-E/4L8-EHD AUTOMATIC TRANSMISSION -----------------------------------------------------------------------------

TRANSMISSION APPLICATIONS: SUBJECT: 1992 HYDRA-MATIC 4L80-E/4L80-EHD HYDRA-MATIC 4L80-E/4L80-EHD (MT1) Service Replacement Transmission Assembly (SRTA)

TRANSMISSION MODELS: VEHICLE APPLICATIONS: All Models 1992 C, K, and P - Trucks 1992 G - Van

Bulletin Covers:

The 1992 HYDRA-MATIC 4L80-E/4L80-EHD Service Replacement Transmission Assembly (SRTA) Program began on September 1, 1991. SRTA models can be ordered for all 1992 HYDRA-MATIC 4L80-E/4L80-EHD model applications from your local General Motors Service Parts Operation (GMSPO) Distribution Center.

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/transaxle 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: (Figure 1)

Parts are currently available from GMSPO.

4L80-E/4L80-EHD 1992 SRTA RATIONALIZATION

SRTA PART DESCRIPTION OEM MODEL MODEL NUMBER REFERENCE ----- ------ ----------- --------- -----

4.3L & 5.7L APPLICATIONS ------------------------ 12AB 8682953 4.3L V6 LB4 C & P TRUCK 8661716 4L80-E

12AC 8682954 4.3L V6 LB4 K TRUCK 4WD 8661719 4L80-E

12AJ 8682955 4.3L V6 LB4 G VAN SLIP YOKE 8680242 4L80-E

12BA 8682956 5.7L V8 L05 C & P TRUCK 8661720 4L80-E

12BJ 8682957 5.7L V8 L05 K TRUCK 4WD 8661726 4L80-E

12BM 8682958 5.7L V8 LO5 P TRUCK 12-15K W/JF9 8661729 4L80-EHD

12BN 8682959 5.7L V8 L05 C TRUCK 12-15K W/JF9 8661751 4L80-EHD

12MB 8682960 5.7L V8 L05 G VAN 8676393 4L80-E

12MK 8682961 5.7L C TRUCK & G VAN ( 10K SLIP YOKE 8680243 4L80-E

7.4L APPLICATIONS ----------------- 12DC 8682962 7.4L V8 L19 C & P TRUCK 3.42-4.56 AXLE 8661742 4L80-E

12DL 8682963 7.4L V8 L19 K TRUCK 4WD 4.10-4.56 AXLE 8661747 4L80-E

12DN 8682964 7.4L V8 L19 P TRUCK 12-15K 8661749 4L80-E

12DP 8682965 7.4L VB L19 P TRUCK 15-16.5K W/JF9 8661750 4L80-EHD

12DR 8682966 7.4L V8 L19 C TRUCK 12-15K W/JF9 8661752 4L80-EHD

12HT 8682967 7.4L V8 L19 C TRUCK 4.10 AXLE 454 SS 8680246 4L80-E

12TW 8682968 7.4L V8 L19 G VAN 8676404 4L80-E

12TS 8682969 7.4L V8 L19 C & G ( 10K SLIP YOKE 8680245 4L80-E

DIESEL APPLICATIONS

12LA 8682979 6.5L V8 L65 C&P TRUCK 3.73-4.56 AXLE(TURBO) 8677576 4L80-E

12LF 8682981 6.5L VB L65 K TRUCK 4WD (TURBO) 8677581 4L80-E

12LL 8682982 6.5L V8 L65 C TRUCK 2WD (TURBO) 8678062 4L80-EHD

12MK 8682961 6.2L C TRUCK & G VAN ( 10K SLIP YOKE 8680243 4L80-E

Figure 1 - HYDRA-MATIC 4L80-E / 4L80-EHD SRTA Model Replacement Chart

NOTE: Part numbers are accurate at time of printing and subject to change. Refer to the latest GMSPO Parts Catalog for part numbers of SRTA models listed.

Parts are currently available from GMSPO.

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.