BEGINNING LATE 1982, TWO NEW MODELS WERE ADDED (OM AND ZR MODELS) TO THE THM 200-4R TRANSMISSION. THE FOLLOWING PAGE HAS UPDATED OIL PRESSURE CHART TO REPLACE THE CURRENT CHART IN THE 1982 SERVICE MANUAL PRELIMINARY CHECK PROCEDURE CHECK TRANSMISSION OIL LEVEL CHECK AND ADJUST T.V. CABLE CHECK OUTSIDE MANUAL LINKAGE AND CORRECT CHECK ENGINE TUNE INSTALL OIL PRESSURE GAGE CONNECT TACHOMETER TO ENGINE CHECK OIL PRESSURES IN THE FOLLOWING MANNER: MINIMUM T.V. LINE PRESSURE CHECK SET THE T.V. CABLE TO SPECIFICATION; AND WITH THE BRAKES APPLIED, TAKE THE LINE PRESSURE READINGS IN THE RANGES AND AT THE ENGINE R.P.M.'S INDICATED IN THE CHART BELOW. FULL T.V. LINE PRESSURE CHECK FULL T.V. LINE PRESSURE READINGS ARE OBTAINED BY TYING OR HOLDING THE T.V. CABLE TO THE FULL EXTENT OF ITS TRAVEL; AND WITH THE BRAKES APPLIED, TAKE THE LINE PRESSURE READINGS IN THE RANGES AND AT THE ENGINES R.P.M.'S INDICATED IN THE CHART BELOW. ** SEE CHART IN BULLETIN **
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.