For 1990-2009 cars

# ENGINE DOES NOT STAY RUNNING ON INITIAL COLD START

#### SUBJECT: ENGINE DOES NOT STAY RUNNING ON INITIAL COLD START

#### VEHICLES AFFECTED: 1989-90 'A' W/4T60 AND 'A, N' W/3T40 AND 3300 ENGINE (VIN 'N') (NEW MEMCALS)

Some 1989-90 A and N models equipped with a 3300 engine, (VIN N) , may experience a condition described as engine does not stay running on initial cold start and/or experience poor cold engine performance.

If these conditions are experienced on a vehicle when the basic engine controls and systems are performing properly, and cannot be repaired by using currently published service and diagnostic procedures, it may be necessary to install a new service Mem-Cal.

The memcals are currently available through CANSPO under the following part numbers:

MEM-CAL MEM-CAL MEM-CAL SERVICE SCANNER BROADCAST YEAR SERIES TRANS PART I.D. NO. CODE ------------------------------------------------------------------------- 1989 N CAR 3T40 16155988 6014 AWLY 1990 N CAR 3T40 16155992 6044 AWMB 1989 A CAR 3T40 16155989 6024 AWLZ 1989 A CAR 4T60 16155990 6034 AWMA 1990 A CAR 3T40 16155995 6054 AWMC 1990 A CAR 4T60 16155996 6064 AWMD

WARRANTY INFORMATION: Use applicable labour operation and time.

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.