Bonneville V6-231 3.8L VIN 3 SFI (1988)
Door Lock Cylinder: All Technical Service Bulletins
Door Lock Cylinders - Binds, Sticks, Hard to Insert Keys
Bulletin Number: 93-10-20
Reference Number: 131070R
Publish Date: 3/93
Subject:
DOOR LOCK CYLINDERS (RECOMMENDED LUBRICATION)
Models Affected:
1984-93 ALL MODELS
THIS BULLETIN CANCELS AND REPLACES BULLETIN 92-10-15 ISSUED 11/91. PLEASE DISCARD BULLETIN 92-10-15.
Customer comments of binding/sticking door lock cylinders, or keys that are hard to insert or extract may be corrected in many cases by applying the
proper lubrication.
The recommended materials for lubricating these components are (in order of preference):
-
GM # 12345120 Multi purpose lubricant (9 oz. spray) or # 12345121 (12 oz.).
-
5W 30 Motor Oil
-
GM # 1052276 or 1052277 spray type Silicone (4.5 oz. or 12 oz. cans).
Penetrating oil type lubricants (such as GM # 1052949 or 1052950, WD-40 lubricants) ARE NOT RECOMMENDED because they wash out the
original lubrication and eventually evaporate, leaving little or no lubricating material. However, if these type materials are used to "unfreeze" or loosen
lock cylinder components, refer to steps 2 through 4 listed below for the proper methods of lubricating.
NOTE:
DO NOT REPLACE THE DOOR LOCK CYLINDERS UNTIL AFTER THE LUBRICATING MATERIALS HAVE BEEN USED AND THE
CYLINDER REMAINS FROZEN/BOUND.
If door lock cylinders require replacement for any reason, apply a coating of GM # 12345120 Multi purpose Lubricant to the inside of the lock case and
the cylinder keyway prior to assembling and installing the cylinder.
Parts are currently available from GMSPO.
Frozen cylinders due to cold weather may be repaired using the following procedure:
1.
Apply heat to the cylinder area with a heat gun while being careful not to damage the painted surfaces.
2.
Hold the shutter door open with a paper clip (or similar item) and force air into the cylinder using compressed air and a blow gun attachment.
3.
While holding the shutter door open, inject a small amount of lubricant (see above recommendations) into the cylinder.
4.
Work the key into the cylinder several times and wipe any excess lubrication residue from the key.
Use applicable Labor Time Number and Time allowance.
