Vehicle Involved, Special Policy & Parts Info.
VEHICLES INVOLVED
Involved are all 1988-90 Chevrolet C/K 1500-3500 Series Trucks built within the following VIN breakpoints:
COMPONENTS
MODEL YEAR PLANT FROM THROUGH INVOLVED
C/K 1988 Pont. East JE100001 JE211189 All Ball Joints
" " Ft. Wayne JZ000037 JZ331451 " " "
" " Oshawa J1100014 J1309126 " " "
C/K 1989 Pont. East KE100001 KE282858 All Ball Joints
" " Ft. Wayne KZ100001 KZ285940 " " "
" " Oshawa K1100015 K1262167 " " "
C 1990 Pont. East LE100002 LE187809 Upper Ball Jnts
" " Ft. Wayne LZ100001 LZ205050 " " "
" " Oshawa L1100015 L1198892 " " "
K 1990 Pont. East LE100001 LE187809 All Ball Joints
" 1990 Ft. Wayne LZ100004 LZ209446 " " "
" 1990 Oshawa L1100017 L1198892 " " "
BEGINNING BREAKPOINTS FOR PRODUCTION INSTALLATION OF ALIGNMENT KITS:
COMPONENTS
MODEL YEAR PLANT FROM THROUGH INVOLVED
C/K 1988 Pont.East JE100001 JE211189 Alignment Kit
" " Ft. Wayne JZ000037 JZ331451 " " "
" " Oshawa J1100014 J1309126 " " "
C/K 1989 Pont. East KE100001 KE282858 " " "
" " Ft. Wayne KZ100001 KZ285940 " " "
" " Oshawa K1100015 K1262167 " " "
C/K 1990 Pont. East LE100001 LE196361
" " Ft. Wayne LZ100001 LZ181940 " " "
" " Oshawa L1100015 L1186255 " " "
SPECIAL POLICY ADJUSTMENT
Ball Joints:
On all 1988, 1989, and 1990 models up to the VIN breakpoints, for a period of 5 years or 100,000 miles (160,000 km) from purchase whichever occurs first, if a customer experiences contamination of any of the maintenance-free ball joints, all maintenance-free ball joints will be replaced with greaseable ball joints at no charge. Due to the improved performance of 1990 model year maintenance-free ball joints, there is a reduced likelihood that a 1990 model truck will experience symptoms due to contamination. For 1990 model trucks only, conduct the ball joint wear check included in this bulletin to determine whether a customer complaint is attributable to contamination of a maintenance-free ball joint. Do not replace the maintenance-free ball joints in a 1990 model truck unless a ball joint check indicates over 1 mm (0.040 inch) of vertical looseness. This dimension is to be recorded on the repair order.
Field testing has now confirmed that a 1988-90 C/K truck does not require front wheel alignment due to ball joint replacement. Therefore, caster/camber alignment will no longer be provided upon customer request under this special policy. However, in the interest of customer satisfaction and upon customer request, a toe-in alignment may be completed after maintenance free ball joint replacement under this special policy.
Wheel Caster/Camber Alignment Parts Kit
On all 1988, 1989 and 1990 models up to the VIN breakpoints, for a period of 5 years or 100,000 miles (160,000 km) from purchase, whichever occurs first, if a customer's vehicle requires caster/camber alignment, the caster/camber alignment parts kit will be provided at no charge (but not the installation cost). Testing has confirmed that caster/camber alignment is only required due to accident or road hazard damage.
This "Special Policy Adjustment Bulletin" should be filed in your "Special Policy Adjustment Bulletins" binder.
OWNER NOTIFICATION
Owners of all vehicles involved in this SPECIAL POLICY ADJUSTMENT have been notified previously by Chevrolet Motor Division (see copy of owner letter included with this bulletin). No additional notification will be made.
PARTS INFORMATION
Parts are to be obtained from General Motors Service Parts Operations (GMSPO).
QUANTITY/
PART NUMBER YEAR MODEL DESCRIPTION VEHICLE
15657212 88-89 C10, 20, 30 Lower Control Arm 2
Ball Joint Kit
15634942 88-90 K10, 20, 30 " " " 2
15659518 88-90 C/K 10 or Upper Control Arm 2
C/K20 & C5Z Ball Joint Kit
15634909 89-90 C/K20 & C6P Upper Control Arm 2
or C/K 30 Ball Joint Kit
15635534 1988 C/K 30 " " " 2
15654867 88-90 C/K 10, 20, Upper Control Arm 1
30 Alignment Kit