A/C trouble

Tiny
HOWARD7
  • MEMBER
  • 2005 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 148,000 MILES
A/C blows mildly cool in front heater blows okay, rear A/C blows good cold air. Low pressure line is cold output line is slightly cool. Replaced very bottom actuator but no change. There are two others I believe one on top and other re circulation maybe I am wrong. Could it be A/C evaporator or actuator trouble?
Monday, June 3rd, 2019 AT 9:15 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning,

Can you give me the high and low side readings of the system with the engine running?

Below is the procedure and a picture of the actuator.

Roy

REMOVAL PROCEDURE
1. Remove the I/P insulator panel.

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2. Disconnect the electrical connector (1) from the left air temperature actuator (2).
3. Remove the screws from the left air temperature actuator (2).
4. Remove the left air temperature actuator (2) from the HVAC module assembly (3).
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Tuesday, June 4th, 2019 AT 3:16 AM
Tiny
HOWARD7
  • MEMBER
  • 1 POST
Low side 35 high side 190. Replaced accumulator, orifice tube and low pressure port. Vacuumed system no leaks. Also have clicking behind radio when key is turned on for a few seconds. Don’t know if that information would help.
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Tuesday, June 4th, 2019 AT 11:39 AM

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