K 3500 Truck 4WD V8-393 6.5L DSL Turbo (1993)
Pressure Control Solenoid (PCS): Customer Interest
A/T - Buzzing Noise on Engine Shutdown
BULLETIN NUMBER:
93-7A-17
SECTION:
7A
NUMBER:
3
CORPORATE
REFERENCE NUMBER:
277141
DATE:
October 1992
SUBJECT:
BUZZING NOISE ON ENGINE SHUTDOWN (INSTALL NEW PRESSURE REGULATOR VALVE)
MODELS:
1993 C/K, S/T TRUCKS AND G/M/L VANS WITH 4L60E TRANSMISSION
CONDITION:
Some 1993 vehicles equipped with the HYDRA-MATIC 4L60-E transmission may exhibit a buzzing noise coming from the transmission on engine
shutdown.
CAUSE:
The buzzing noise may be a result of the pressure regulator valve oscillating due to oil pressure instability during engine shutdown.
CORRECTION:
