FALSE CODE 34,42,43 HARD COLD START / SURGE

REVISED 10/84 A NEW PROM HAS BEEN RELEASED FOR SERVICE TO REPAIR: - HARD COLD STARTS - -20 DEGREE F COLD CRANKS - REDUCES OVERBOOST LEVELS -CORRECT FALSE CODES 34, 42, 43 THIS PROM IS RELEASED FOR SERVICE USE ONLY. SHOULD A CUSTOMER COMMENT BE RECEIVED CONCERNING HARD COLD STARTS, SURGE OR POOR PERFORMANCE AT WIDE OPEN THROTTLE, OR USE OF DIAGNOSTIC CHARTS 34, 42, 43 LEAD TO NO TROUBLE FOUND. PROM PART NUMBER 1227058 SHOULD BE ORDERED FROM WDDGM AND INSTALLED PER THE 1984 CHASSIS SERVICE MANUAL.

SERVICE NUMBER BROADCAST CODE PROM ID NO (SCAN TOOL) 1227058 DNN 7058

REVISED 7/84 SERVICE PROM #1226923, RELEASED TO CORRECT POOR PERFORMANCE IN THE 1984 3.8L TURBOCHARGED REGAL, WAS PROGRAMMED INCORRECTLY BY DELCO ELECTRONICS. AS A RESULT, THE PROM WILL NOT WORK IN THE VEHICLE. RESULTS, IF INSTALLED, WILL BE A SOLID "SERVICE ENGINE SOON" LIGHT, AND CODE 51. THE VEHICLE WILL RUN IN FUEL BACKUP MODE. ALL WDDGM STOCK FOR PART #1226923 IS DEFECTIVE AND SHOULD NOT BE ORDERED. ANOTHER BULLETIN WILL BE RELEASED AS SOON AS NEW PROMS ARE AVAILABLE.

ORIGIONAL BULLETIN A NEW PROM HAS BEEN RELEASED FOR SERVICE TO REPAIR: - HARD COLD STARTS - -20 DEGREE F COLD CRANKS - REDUCES OVERBOOST LEVELS THIS PROM IS RELEASED FOR SERVICE USE ONLY. SHOULD A CUSTOMER COMMENT BE RECEIVED CONCERNING HARD COLD STARTS, OR AN OVERBOOST CONDITION PROM PART NUMBER 1226923 SHOULD BE ORDERED FROM WDDGM AND INSTALLED PER THE 1984 CHASSIS SERVICE MANUAL.

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.