PWR DOOR LOCK ACTUATOR CHATTER (RECODE LOCK CYLINDER). Saturn Saturn 1991

For 1990-2009 cars

# PWR DOOR LOCK ACTUATOR CHATTER (RECODE LOCK CYLINDER)

#### SUBJECT: Power Door Lock Actuators Chatter When Activated from Driver's Door Key Cylinder Switch (Recode Lock Cylinders)

Due to revisions in the affected model years and the addition of a VIN breakpoint, this bulletin supersedes bulletin 91 - T - 40, which should be discarded.

#### MODELS AFFECTED: 1991 - 1992 Saturns w/Power Door Locks built before vehicle identification number (VIN) NZ138700.

CONDITION: Power door lock actuators sometimes chatter after the driver's lock cylinder is used to lock or unlock the power door locks.

CAUSE: Key code allows key to be removed in the 10 o'clock or 2 o'clock position (Figure 1), causing the power door lock actuators to chatter.

CORRECTION: Refer to the chart on the following page to determine what the correct procedure is for correcting the condition.

o Did the customer cycle the door locks repeatedly and/or rapidly just before hearing the door lock actuators chatter? | |YES o Explain to customer that | some door lock actuator | chatter is normal after | or during rapid and/or | repeated actuation of the | door locks. NO| | | o Can the key be removed from the driver's door lock at either the 10 o'clock or 2 o'clock position? (Refer to Figure 1 on the previous page). | NO | o Operate the door locks from --------------| an inside switch. |YES o Do the door lock actuators | chatter | o Is the vehicle key code included on | the list in figure 2 on the previous | page? | | | |YES------------- | | | |NO NO| | ----- o Inspect driver's door o Inspect driver's door | | lock cylinder, switch lock cylinder switch | | and key. and electrical circuits | | o Repair as necessary. 194B, 195B and 155ZZ.* | | Refer to "Procedure" in | | this bulletin. o Repair as necessary. Refer| | to "Procedure" in this | YES| bulletin. | | | o Select a new key code fro the list in o Inspect circuits 194B. | Figure 3 on the previous page. 195B, 294A and 295A.* | o Recode all lock cylinders to the new key | code. Refer to "Procedure" in this bulletin. o Repair to "Procedure" in-- o Cut two new keys for the customer. this bulletin. o Call Retailer Assistance Center to report the key code change.

* For circuit inspection, refer to the "Power Locks Electrical System" in the "Body Service Manual" (1991 Edition) of "Power Distribution Service Manual" (1991-1192 Edition).

PROCEDURE: To recode or repair lock cylinders, refer to "Keys and Locks" in the "General Information" section of the "Body/Collision Repair Service Manual." Refer to Figure 3 on the previous page for the correct replacement key codes.

To diagnose and repair power door lock circuitry, refer to the "Power Locks Electrical System" in either the "Doors" section of the "Body/Collision Repair Service Manual" (1991 edition), or "Power Distribution Service Manual" (1991-1992 edition).

PARTS REQUIREMENTS: Lock Service Kit Complete 21035200

CLAIM INFORMATION: To receive credit for this repair, submit a claim through the Saturn Dealer System as follows:

Labor Case Operation Type Description Code Time -------------------------------------------------------- VW Recode All Lock Cylinders T9554 3.1 hrs

Refer to the "Saturn Labor Time Guide" for labor codes and times for other repairs as necessary.

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.