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Home >> Chevrolet >> 2000 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Manual - Escalade, Pickup, TAHOE & YUKON >> System Tests >> A/C System Performance

A/C System Performance

  1. Park vehicle out of direct sunlight. Open doors or windows to ventilate vehicle. Vent exhaust system, if necessary. Connect manifold gauge set. Note ambient temperature and relative humidity. Close all doors and windows. Turn on A/C system. Set blower to high speed, and temperature lever to COLD position. Open vents.
  2. Insert thermometer into right center outlet. Place transmission in Park or Neutral. Start engine and allow it to run at 1500 RPM until outlet air reaches lowest temperature (approximately 3 minutes). See A/C SYSTEM SPECIFICATIONS  table.
A/C SYSTEM SPECIFICATIONS(1)

Ambient Temp. - °F (°C) Low-Side Pressure - psi (kg/cm2 ) High-Side Pressure - psi (kg/cm2 ) Air Outlet Temp. -°F (°C)
80 (27) 32 (2.2) 228 (16) 51 (10)
90 (32) 39 (2.6) 280 (19) 59 (15)
100 (38) 44 (3.0) 301 (20) 66 (19)
110 (43) 46 (3.2) 327 (22) 75 (24)
(1) Specifications are with relative humidity at 40 percent.