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Heating, Ventilation and Air Conditioning: Overview Chevrolet Silverado 2500

Automatic HVAC System 32 illustrations ~129 words

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This step determines if the A/C system has at least the minimum refrigerant charge required to operate the system without damage.
  2. This step measures the performance of the A/C system.
  3. This step is to allow for vehicle variations as well as high ambient air temperatures.

Scheme 2

Scheme 2
Scheme 2

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4
Scheme 4

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6

Scheme 7

Scheme 7: A/C Diagnostics - Pressure Zone A
Scheme 7: A/C Diagnostics - Pressure Zone A

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10: A/C Diagnostics - Pressure Zone B
Scheme 10: A/C Diagnostics - Pressure Zone B

Scheme 11

Scheme 11
Scheme 11

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13: A/C Diagnostics - Pressure Zone C
Scheme 13: A/C Diagnostics - Pressure Zone C

Scheme 14

Scheme 14: A/C Diagnostics - Pressure Zone D
Scheme 14: A/C Diagnostics - Pressure Zone D

Scheme 15

Scheme 15
Scheme 15

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18: Heating Performance Diagnostic
Scheme 18: Heating Performance Diagnostic

Scheme 19

Scheme 19
Scheme 19

Scheme 20

Scheme 20: Defrosting Insufficient
Scheme 20: Defrosting Insufficient

Scheme 21

Scheme 21: High Or Low Mode Control Effort
Scheme 21: High Or Low Mode Control Effort

Scheme 22

Scheme 22
Scheme 22

Scheme 23

Scheme 23: High Or Low Temperature Control Effort
Scheme 23: High Or Low Temperature Control Effort

Scheme 24

Scheme 24
Scheme 24

Scheme 25

Scheme 25: Noise Diagnosis - Blower Motor
Scheme 25: Noise Diagnosis - Blower Motor

Scheme 26

Scheme 26
Scheme 26

Scheme 27

Scheme 27: Noise Diagnosis - A/C System
Scheme 27: Noise Diagnosis - A/C System

Scheme 28

Scheme 28
Scheme 28

Scheme 29

Scheme 29
Scheme 29

Scheme 30

Scheme 30: Noise Diagnosis - HVAC Module
Scheme 30: Noise Diagnosis - HVAC Module

Scheme 31

Scheme 31
Scheme 31

Scheme 32

Scheme 32: Odor Diagnosis
Scheme 32: Odor Diagnosis

Scheme 33

Scheme 33
Scheme 33

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