ENGINE MAY EXPERIENCE COLD START STALL (INST. NEW MEMCAL)

SUBJECT: ENGINE MAY EXPERIENCE COLD START STALL

MODELS AFFECTED: 1990-92 REGAL WITH 3800 T.P.I. (CODE L) 1991-92 PARK AVENUE/ULTRA WITH 3800 T.P.I.(CODE L) 1991-92 RIVIERA/REATTA WITH 3800 T.P.I. (CODE L) 1992 LESABRE WITH 3800 T.P.I. (CODE L)

Some 1990-92 Regals, 1991-92 Park Avenue/Ultra, Riviera/Reatta and 1992 LeSabre models equipped with 3800 T.P.I. engines (Code L), may experience a condition described as engine does not stay running on initial cold start.

This calibration was a running change for the 1992 model year. Be sure to check MEM-CAL Scanner I.D. as the vehicle may already have this calibration.

If this condition is experienced and cannot be repaired by using currently published service diagnostic procedures, it may be necessary to install a new service MEM-CAL after basic engine controls and systems performance have been verified.

PARTS STATEMENT:

Parts are currently available from GMSPO. See Parts Information on next page.

WARRANTY INFORMATION:

Use applicable labor operation and time.

PARTS INFORMATION:

MEM-CAL MEM-CAL MEM-CAL AXLE SERVICE SCANNER BROADCAST YEAR SERIES RATIO PART NUMBER I.D. NO. CODE ------- ------ -------- ---------- ------ ------- 1990-92 Regal 3.06/FED 16169568 9634 AZKT

1990-92 Regal 3.06/CAL 16169573 9644 AZKU

1992 LeSabre 3.06/FED 16169588 9574 AZKL

1992 LeSabre 3.06/CAL 16169593 9584 AZKM

1992 LeSabre 2.84/FED 16169578 9554 AZKJ

1992 LeSabre 2.84/CAL 16169583 9564 AZKK

1991-92 Riviera/ 3.06/FED 16167814 7714 AUWD Reatta

1991-92 Riviera/ 3.06/CAL 16167820 7724 AUWF Reatta

1991-92 Park Avenue/ 3.06/FED 16169588 9574 AZKL Ultra

1991-92 Park Avenue/ 3.06/CAL 16169593 9584 AZKM Ultra

1991-92 Park Avenue/ 2.84/FED 16169578 9554 AZKJ Ultra

1991-92 Park Avenue/ 2.84/CAL 16169583 9564 AZKK Ultra

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.