C 3500 Truck 2WD V8-379 6.2L DSL (1988)
Refrigerant Pressure Sensor / Switch: Customer Interest
A/C - Pressure Cycling Switch 'Clicking' Noise
Number:
88-411-1B
Section:
1B
Date:
APRIL, 1989
Subject: A/C PRESSURE CYCLING SWITCH "CLICKING" NOISE
Model and Year:
1988 C/K MODELS W/AIR CONDITIONING
FIGURE 1
TO:
ALL CHEVROLET DEALERS
Some 1988 C/K trucks have experienced an A/C pressure cycling switch "clicking" sound. This condition exists when compressor operation is needed,
such as A/C or defrost. The condition is inherent to the switch's design and its location on the A/C accumulator "J" pipe (See Figure 1).
The service procedure and parts required to address this condition are as follows:
NOTE:
This procedure will significantly reduce the "clicking" sound, but may not eliminate it completely in all cases.
PARTS INFORMATION
DESCRIPTION
PART NUMBER
A/C Pressure Cycling Switch
3096605
Jumper Wire
12058652
