GMC Workshop Service and Repair Manuals > S15/T15 2WD P/U V6-262 4.3L VIN W CPI (1993) > Transmission and Drivetrain | Actuators and Solenoids - Transmission and Drivetrain | Actuators and Solenoids - A/T | Pressure Control Solenoid (PCS) <--> [Pressure Regulating Solenoid, A/T] | Component Information | Technical Service Bulletins | Customer Interest for Pressure Control Solenoid (PCS): | 937A17 | Oct | 92

A/T - Buzzing Noise on Engine Shutdown|Page 4276 > < PROM - Programmable Read Only Memory|CALPAK|Page 4264

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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:

Transmission and Drivetrain
Actuators and Solenoids - Transmission and Drivetrain
Actuators and Solenoids - A/T
Pressure Control Solenoid (PCS) <--> [Pressure Regulating Solenoid, A/T]
Component Information
Technical Service Bulletins
Customer Interest for Pressure Control Solenoid (PCS):
937A17
Oct
92
A/T - Buzzing Noise on Engine Shutdown

A/T - Buzzing Noise on Engine Shutdown|Page 4276 > < PROM - Programmable Read Only Memory|CALPAK|Page 4264