PACKARD 32 WAY CONNECTOR IDENTIFICATION APPLICATIONS

VEHICLES AFFECTED: ALL TRUCKS

This bulletin serves to clarify the labeling of the Packard 32 way connectors used on the GMP4 under dash ECMs.

Currently a common strain relief is used in both the C-D 32 pin and the E-F 32 pin connector. To properly identify these connectors, the strain reliefs must be removed. Use the lettering on the connector as shown on the attached document.

The colours used at this time for the 32 pin E-F connector are yellow, mint green or orange.

This updates any previous information released concerning identification that indicates any of these colours as being C & D connectors.

dated January, 1985. This bulletin provides the recommended service procedure for correcting this condition.

SERVICE PROCEDURE

The following procedure will provide a significant improvement in cold startability of these vehicles.

1. Install a new calibration PROM per the following:

A. On 1983 Chevrolet Cavalier models use P/N 1226823, PROM. On 1983 Cadillac Cimarron models use P/N 1227254, PROM.

INSTALL (NEXT TO PRODUCTION LABEL) SUPPLEMENTARY TUNE-UP LABEL P/N 14086563 FOUND IN PROM PACKACE.

B. On 1984 Chevrolet Cavaller models with base axle F75 (3.18) use P/N 16047637, PROM.

On 1984 Cadillac Cimarron models with base axle (3.18) use P/N 1227256, PROM. (Refer to service parts Identification Label).

C. On 1984 Chevrolet Cavalier models with F77 (3.73) performance axle G92, and on 1984 Cadillac Cimarron models with FW9 (3.43) axle use PIN 1227257, PROM.

(Refer to service parts Identification Label).

2. On 1983 models set ignition timing at 6 DEG BTDC from 0 DEG TDC. On 1984 models timing should be checked to assure 6 DEG BTDC.

THE TIMING CONNECTOR MAY BE LEFT DISCONNECTED, FOR THE NEXT STEP.

3. Install spark bypass relay kit, P/N 14086983 (1983-1984). Detailed instructions are included in the kit package. Reconnect the timing connector from Step 2.

4. Remove and discard the fuse labeled 'crank' from the fuse block No. 2 position (3 amp fuse) (1983-1984).

5. Install new spark plugs, P/N 5614009 (1983-1984).

6. Install starting procedure label, P/N 14085150, on the headliner so it is covered by the driver's sun visor. The label is required on all 1983 models, and on early production 1984 models (installed in production Mid-1984).

OWNERS OF CAVALIER AND CIMARRON VEHICLES SHOULD BE ADVISED THAT COLD WEATHER STARTING PERFORMANCE IS ALSO DEPENDENT ON THE USE OF 5W-30 SF MOTOR OIL AS SPECIFIED IN THE OWNER'S MANUAL.

PARTS INFORMATION

Parts required to complete this Special Policy should be obtained from the Parts Distribution Centres of the General Motors Warehousing and Distribution Division. The following parts are to be used:

Description Usage Part Number ----------- ----- ----------- PROM 1983 - Cavalier 1226823 PROM 1983 - Cimarron 1227254 PROM 1984 - Cavalier W/3.18 Axle 16047637 PROM 1984 - Cimarron W/3.18 Axle 1227256 PROM 1984 - Cavalier W/3.73 Axle 16047649 PROM 1984 - Cimarron W/3.43 Axle 1227257 Spark Bypass Relay Kit 1983-84 14086983 Spark Plugs 1983-84 5614009 Sun Visor Starting Label 1983-84 14085150

WARRANTY CLAIM INFORMATION

When performing the repairs outlined in the service procedure of this bulletin, the Dealer is requested to submit a warranty claim as follows:

Parts Failed Part Labour Operation Time Allowance Count Number Number 1983 1984 ----- ------ ------ ---- ---- 7 T1113 .9 .9

*Claim the replacement, PROM part number from the service procedure of this bulletin as the 'Failed Part Number'.

Zone Authorization is not required for claims meeting the criteria outlined in this bulletin with the exception of Owner Reimbursement claim submissions.

Claims for customer reimbursement of previously paid repairs are to be submitted as a sublet repair on a warranty claim as follows:

Labour Operation Number Net Item ----------------------- -------- T1116 $ xx.xx

The reimbursement to owners who have incurred repair expense for items covered by this policy must be claimed on a 'Net Item' basis.

Prior Zone Authorization is required on all claim submissions which fall into the Owner Reimbursement category.

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.