Starting System - Starter Clashes Upon Starting
89chevy05GMC NUMBER: 88-T-193
GROUP: 6D - Engine Electrical
DATE: February, 1989
CORPORATE
NUMBER: 836544
SUBJECT: STARTER CLASHES UPON STARTING
MODELS: 1985-88 LIGHT DUTY TRUCKS WITH 4.3L, 5.0L, OR 5.7L ENGINES
THIS BULLETIN CANCELS AND REPLACES TRUCK SERVICE BULLETIN 88-T-150 TO ADD THE FLEXPLATE INFORMATION. ALL COPIES OF 88-T-150 SHOULD BE DISCARDED, DATED 08/01/88.
Some vehicles equipped with 4.3L, 5.0L or 5.7L engines and automatic transmissions may experience a condition where the starter and flexplate occasionally do not mesh properly when attempting to start the vehicle. This results in a grinding or clashing sound similar to the noise which would occur if someone were to mistakenly attempt to start a vehicle while the engine was already running. This condition may be addressed by the installation of a new starter drive assembly, P/N 10456422 which features a stiffer jump spring to promote engagement. When replacing the starter drive assembly for this condition, all the teeth on the ring gear should be inspected for damage. If significant damage is observed on three or more consecutive teeth, the flexplate assembly should also be replaced with the appropriate flexplate assembly from the table below to avoid further incidence of this condition.
Application Service Flexplate
C, K, G, R, V, M and P 10128414
trucks equipped with 4.3L VIN Z, or 5.0L VIN H or 5.7L VIN M, K
Parts are currently available from GMSPO. For vehicles under warranty, use the following Labor Time Operation Numbers:
J4600 - Starter Driver Assy, Replace J1400 - Flexplate, Replace J1420 - Flywheel, Replace Time allowances are to be selected from the appropriate model year Labor Time Guide.