SERVICE MANUAL UPDATE SEC. 7A AUTOMATIC TRANSAXLE DIAGNOSIS

Subject: AUTOMATIC TRANSAXLE DIAGNOSIS

Model and Year: 1992LUMINA(APV)

TRANSAXLE APPLICATIONS: SUBJECT. HYDRA-MATIC 4T60-E (Ml3) 1992 Automatic Transaxle Diagnosis Update (Service Information)

TRANSAXLE MODELS: VEHICLE APPLICATIONS: 2BTW,2CXW,2CZW,2CLW,2YMW, U-Van 2YLW,2CSW,2YZW,2WAW,2BYW, 2CTW,2PHW,2YPW

CORRECTION: (For U-Van with 3800 Engines Only)

The 1992 "Automatic Transaxle Diagnosis" section for the 3800 used in the U-Van should include RPO L27 in the section title:

Section/HYDRA-MATIC 4T60-E (w/3800 TPI,MPI L27 and L67 SCI Engines) AUTOMATIC TRANSAXLE DIAGNOSIS

Please replace the following figures from your 1992 Automatic Transaxle Diagnosis section with the following revised figures:

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.