Compressor mount switch

Tiny
CBROWNEE03
  • MEMBER
  • 2000 GMC SONOMA
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
How do I change the low side compressor switch?
Friday, June 7th, 2019 AT 4:18 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Welcome to 2CarPros.

Here are the directions for replacing the switch. The attached pictures correlate with the directions.

_______________________________________

A/C REFRIGERANT PRESSURE SENSOR REPLACEMENT

REMOVAL PROCEDURE

pic 1

1. Disconnect the A/C low pressure switch electrical connector.

Pic 2

2. Remove the A/C low pressure switch from the evaporator tube.
3. Remove and discard the O-ring seal from the A/C low pressure switch port on the evaporator tube.

INSTALLATION PROCEDURE

pic 3

1. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the refrigerant pressure sensor port on the evaporator tube.
2. Lightly coat the new O-ring seal with mineral base 525 viscosity refrigerant oil.

IMPORTANT: DO NOT allow any of the mineral base 525 viscosity refrigerant oil on the O-ring seal to enter the refrigerant system.

3. Slide the new O-ring seal onto the A/C low pressure switch port on the evaporator tube front until the unit is fully seated.

NOTE: Refer to Fastener Notice in Service Precautions.

4. Install the A/C low pressure switch to the evaporator tube.

Tighten
Tighten the A/C low pressure switch to 4.8 N.M (42 lb in).

Pic 4

5. Connect the A/C low pressure switch electrical connector.

_______________________________

Let me know if this is what you were looking for or if you have other questions.

Take care,
Joe
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Friday, June 7th, 2019 AT 9:37 PM

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