OEM GM AC System Parts

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The factory air system that came with your GM vehicle keeps you cozy in all manners of weather conditions. How it cools, heats, and ventilates your passenger space isn't all that complicated, to be honest.

How Your HVAC System Works

The air conditioning system features four major parts. The compressor pressurizes the refrigerant and converts it to a hot gas. The condenser cools that gas to turn it into a liquid. That liquid flows through an expansion valve and turns into a gas again, but at low pressure. Lastly, the evaporator cools the gas down rapidly with a fan. The chilled air is sent through your vents into the cabin to cool things down. Heating is even more simple. Hot coolant is drawn into a heater core from the engine. A front-mount fan blows air over the core's fins, sending warm air into the cabin.

Signs of AC System Problems

In time, though, your system can begin to struggle when it comes to keeping you comfortable. Here are some signs to look for:

  • A steamy cabin atmosphere
  • The syrupy smell of coolant
  • Inability to cool properly

The first thing you want to check is your cabin air filter to ensure that you don't just need to change it. If that's fine, check the hoses and other parts of your AC system for failure. If you find that something does need replacing, make sure that you use the best part for the job. That would be one made by GM, since it's designed to fit your model. We have plenty in stock in our online auto parts inventory, all ready to ship at a moment's notice. Buy now and save!

AC & Heater Assembly
Part Number: 23369529
Other Names: AC & Heater Case, HVAC Unit Case, HVAC Unit Case Assembly, Case More Names
Replaces: 13351403, 13351411, 23172714, 23388561
Description: Without climate control. More Info
Fits:
  • Buick:
    • LaCrosse
  • Chevrolet:
    • Cruze,
    • Cruze Limited
MSRP $295.30
$186.84
MSRP $295.30
$186.84
AC & Heater Case
Part Number: 23388562
Other Names: AC & Heater Assembly, HVAC Unit Case Assembly, Case More Names
Replaces: 13339074, 13351401
Description: With climate control. More Info
Fits:
  • Buick:
    • LaCrosse,
    • Regal
  • Chevrolet:
    • Malibu,
    • Malibu Limited
MSRP $227.30
$126.15
MSRP $227.30
$126.15
AC & Heater Case
Part Number: 84567421
Positions: Front
Other Names: Heater Case, AC & Heater Assembly, HVAC Unit Case, F (S)Case More Names
Description: Front. More Info
Fits:
  • Buick:
    • Enclave
  • Cadillac:
    • XT6
  • Chevrolet:
    • Traverse
  • GMC:
    • Acadia
MSRP $145.02
$95.08
MSRP $145.02
$95.08
HVAC Air Inlet Door Actuator
Part Number: 01996792
Other Names: Actuator, HVAC Air Adjustment Control Motor, More Names
Description: 1995-97. 1994-97. air inlet door. More Info
Fits:
  • Chevrolet:
    • Blazer,
    • S10
  • GMC:
    • Jimmy,
    • Sonoma
  • Oldsmobile:
    • Bravada
MSRP $18.98
$17.08
MSRP $18.98
$17.08
HVAC Air Inlet Door Actuator
Part Number: 89018681
Positions: Front
Other Names: Actuator, Controller, HVAC Blend Door Actuator More Names
Description: Electric, manual control. Mode valve. Temperature, manual control. 2000-03, temperature valve. 1997-00, front, temperature valve. Air... More Info
Fits:
  • Buick:
    • Regal
  • Chevrolet:
    • C1500,
    • C2500,
    • C3500,
    • Classic,
    • Corvette,
    • Impala,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • Malibu,
    • Monte Carlo,
    • Venture
  • GMC:
    • C1500 Pickup,
    • C2500 Pickup,
    • C3500 Pickup,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup
  • Oldsmobile:
    • Alero,
    • Cutlass,
    • Intrigue
  • Pontiac:
    • Grand Am,
    • Grand Prix
  • 19 more
MSRP $95.10
$57.06
MSRP $95.10
$57.06
HVAC Re-Circulation Door Actuator Lever
Part Number: 23129020
Other Names: Cam, HVAC Re-Circulation Door Actuator Link More Names
Fits:
  • Chevrolet:
    • Silverado 1500,
    • Silverado 2500 HD,
    • Silverado 3500 HD
  • GMC:
    • Sierra 1500,
    • Sierra 2500 HD,
    • Sierra 3500 HD
  • 1 more
MSRP $45.58
$27.35
MSRP $45.58
$27.35
Pressure Cycling Switch
Part Number: 15035084
Other Names: AC Switch, HVAC Pressure Switch, Switch More Names
Description: Express, savana. 4.8, 5.3 & 6.0L. Cycling. 4.3L, 2003-14. 6.6L. More Info
Fits:
  • Chevrolet:
    • Express 1500,
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500
  • 1 more
MSRP $21.82
$13.64
MSRP $21.82
$13.64
Switch
Part Number: 89040362
Other Names: HVAC Pressure Switch, Pressure Cycling Switch, AC Switch More Names
Description: All models. Cycling. 5.3 & 6.0L, 2006-09. 5.3 & 6.0L, 2003-05. 4.2L. 5.3L. Hummer H2. More Info
Notes: Included with accumulator. More Notes
Fits:
  • Buick:
    • Rainier
  • Cadillac:
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Avalanche 1500,
    • Avalanche 2500,
    • Silverado 1500,
    • Silverado 1500 Classic,
    • Silverado 1500 HD,
    • Silverado 2500,
    • Silverado 2500 HD,
    • Silverado 2500 HD Classic,
    • Silverado 3500,
    • Silverado 3500 Classic,
    • Suburban 1500,
    • Suburban 2500,
    • Tahoe,
    • Trailblazer,
    • Trailblazer EXT
  • GMC:
    • Envoy,
    • Envoy XL,
    • Envoy XUV,
    • Sierra 1500,
    • Sierra 1500 Classic,
    • Sierra 1500 HD,
    • Sierra 2500,
    • Sierra 2500 HD,
    • Sierra 2500 HD Classic,
    • Sierra 3500,
    • Sierra 3500 Classic,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H2
  • Oldsmobile:
    • Bravada
  • 30 more
MSRP $66.92
$40.15
MSRP $66.92
$40.15
Switch
Part Number: 15144494
Other Names: Pressure Cycling Switch, AC Switch, HVAC Pressure Switch More Names
Description: Express, savana. 4.8, 5.3 & 6.0L. Cycling. 4.3L, 2018-20. 6.6L. 2.8L. 4.3L, 2003-14. Hummer H2. More Info
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Avalanche,
    • Express 1500,
    • Express 2500,
    • Express 3500,
    • Silverado 1500,
    • Silverado 1500 Classic,
    • Silverado 1500 HD,
    • Silverado 1500 HD Classic,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Suburban 1500,
    • Suburban 2500,
    • Tahoe
  • GMC:
    • Savana 1500,
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 1500 HD,
    • Sierra 1500 HD Classic,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H2
  • 23 more
MSRP $56.57
$33.95
MSRP $56.57
$33.95
Lower Case Stud
Part Number: 11562120
Positions: Rear, Front
Other Names: AC & Heater Case Stud, HVAC Unit Case Stud, Stud More Names
Description: Rear. Front with auto temp control. More Info
Fits:
  • Buick:
    • Enclave
  • Cadillac:
    • XT6
  • Chevrolet:
    • Traverse
  • GMC:
    • Acadia,
    • Acadia Limited
MSRP $8.38
$5.24
MSRP $8.38
$5.24
Relay
Part Number: 13502674
Positions: Right Front, Right Rear, Front, Front Rear
Other Names: Horn Relay, Engine Cooling Fan Motor Relay, Fuel Pump Relay, Fan Relay, ABS Relay, Window Relay, A/C Clutch Relay, AC Relay, HVAC... More Names
Notes: Included with junction block. order by year and application. More Notes
Fits:
  • Buick:
    • Encore,
    • Reatta,
    • Regal,
    • Riviera
  • Cadillac:
    • DeVille,
    • Eldorado,
    • Escalade,
    • Fleetwood,
    • Seville
  • Chevrolet:
    • Blazer,
    • C1500,
    • C2500,
    • C3500,
    • Camaro,
    • Corvette,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • Lumina,
    • Lumina APV,
    • S10,
    • Silverado 1500,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Tahoe
  • GMC:
    • C1500 Pickup,
    • C2500 Pickup,
    • C3500 Pickup,
    • Jimmy,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • Sierra 1500,
    • Sonoma,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Yukon
  • Oldsmobile:
    • Bravada,
    • Cutlass Supreme,
    • Silhouette,
    • Toronado
  • Pontiac:
    • Firebird,
    • Grand Prix,
    • Trans Sport
  • Saturn:
    • SC,
    • SC1,
    • SC2,
    • SL,
    • SL1,
    • SL2,
    • SW1,
    • SW2
  • 51 more
MSRP $30.92
$19.33
MSRP $30.92
$19.33
AC Hoses
Part Number: 84524267
Other Names: A/C Refrigerant Suction Hose, HVAC Heater Hose Assembly, Hose More Names
Replaces: 23443879, 23499086
Description: Auxiliary evaporator hose. Escalade ESV. Suburban. Yukon XL. AuxIliary HVAC. Underbody Pipe and Hose Assy.. Incl.Liquid Hose. Incl.HVAC... More Info
Fits:
  • Cadillac:
    • Escalade ESV
  • Chevrolet:
    • Suburban
  • GMC:
    • Yukon XL
MSRP $377.53
$209.53
MSRP $377.53
$209.53
AC Hoses
Part Number: 25713423
Other Names: AC Line, Liquid Line, Hose More Names
Description: Evaporator to accumulator. Drier to accumulator. 4.6L. More Info
Fits:
  • Cadillac:
    • DeVille
  • Pontiac:
    • Bonneville
MSRP $223.42
$124.00
MSRP $223.42
$124.00
AC Hoses
Part Number: 22582192
Other Names: AC Hose, Lines, Hose & Tube Assembly, More Names
Description: 3.1L. More Info
Fits:
  • Chevrolet:
    • Beretta,
    • Corsica
MSRP $139.32
$125.39
MSRP $139.32
$125.39
AC Hose
Part Number: 22586985
Other Names: AC Hoses, More Names
Description: Suction & discharge, 6 cylinder. From rear of compressor. Chevrolet. 6 cylinder. 3.1L. More Info
Fits:
  • Chevrolet:
    • Cavalier
  • Pontiac:
    • Sunbird
MSRP $141.41
$127.27
MSRP $141.41
$127.27
AC Hose
Part Number: 22587822
Other Names: AC Hoses, More Names
Description: 2.0L without turbo, stamped 22551149. From rear of compressor. Pontiac. All. 4 cylinder. More Info
Fits:
  • Pontiac:
    • Sunbird
MSRP $161.58
$145.42
MSRP $161.58
$145.42
AC Tube
Part Number: 22653160
Other Names: Lines, AC Line, F (S)Tube More Names
Description: 3.4L & 2.2L, to evaporator. More Info
Fits:
  • Chevrolet:
    • Malibu
  • Oldsmobile:
    • Alero,
    • Cutlass
  • Pontiac:
    • Grand Am
MSRP $80.38
$48.23
MSRP $80.38
$48.23
AC Line
Part Number: 3540654
Other Names: AC Hoses, More Names
Description: Condenser to evaporator. All models. 4.6l. To condenser, 4.6L. More Info
Notes: Does not include O-rings. More Notes
Fits:
  • Cadillac:
    • Eldorado,
    • Seville
MSRP $86.45
$77.81
MSRP $86.45
$77.81
AC Line
Part Number: 60002045
Positions: Rear
Other Names: Rear AC Line, F (S)Hose More Names
Description: Condenser & components, 1.2L. More Info
Fits:
  • Buick:
    • Encore GX
  • Chevrolet:
    • Trailblazer
MSRP $59.24
$35.54
MSRP $59.24
$35.54
AC Hose
Part Number: 15101308
Other Names: AC Hoses, Hose More Names
Description: 4.3L. Compressor & condenser. 2.2l. More Info
Fits:
  • Chevrolet:
    • Blazer,
    • S10
  • GMC:
    • Jimmy,
    • Sonoma
  • Oldsmobile:
    • Bravada
MSRP $210.02
$116.56
MSRP $210.02
$116.56
AC Hose
Part Number: 20816380
Positions: Rear
Other Names: AC Hoses, Rear AC Hose, F (S)Tube More Names
Replaces: 25813637
Description: Hummer H3. 5.3L. More Info
Fits:
  • Chevrolet:
    • Colorado
  • GMC:
    • Canyon
  • Hummer:
    • H3,
    • H3T
MSRP $219.58
$121.87
MSRP $219.58
$121.87
AC Line
Part Number: 1645311
Positions: Front
Other Names: Tube, Evaporator Assembly, AC Hoses, More Names
Description: Front. Condenser to evaporator. Seville. More Info
Notes: Included: With Compressor To Condenser Line. More Notes
Fits:
  • Buick:
    • Riviera
  • Cadillac:
    • Eldorado,
    • Seville
MSRP $78.32
$70.49
MSRP $78.32
$70.49
AC Tube
Part Number: 15820856
Other Names: AC Hoses, A/C Refrigerant Discharge Hose, Hose More Names
Description: Hummer H3. Compressor to condenser. 3.7L. More Info
Fits:
  • Hummer:
    • H3,
    • H3T
MSRP $62.22
$37.33
MSRP $62.22
$37.33
AC Hoses
Part Number: 92186149
Other Names: AC Tube, F (S)Hose More Names
Description: Valve to compressor. GTO. More Info
Fits:
  • Pontiac:
    • GTO
MSRP $198.46
$114.11
MSRP $198.46
$114.11
AC Tube
Part Number: 94831199
Positions: Left
Other Names: AC Hose, Discharge Hose, F (S)Hose More Names
Description: G3. More Info
Fits:
  • Chevrolet:
    • Aveo,
    • Aveo5
  • Pontiac:
    • G3
MSRP $234.78
$130.30
MSRP $234.78
$130.30
AC Hose
Part Number: 10080328
Other Names: AC Hoses, More Names
Description: Compressor fitting with hoses. All models. 2.5l. More Info
Notes: Includes o-ring. More Notes
Fits:
  • Chevrolet:
    • Lumina
MSRP $93.87
$84.48
MSRP $93.87
$84.48
AC Tube
Part Number: 10176086
Other Names: AC Line, AC Hose, More Names
Description: Evaporator/condenser. Cond to evaporator. More Info
Fits:
  • Buick:
    • Regal
  • Oldsmobile:
    • Cutlass Supreme
  • Pontiac:
    • Grand Prix
MSRP $129.90
$116.91
MSRP $129.90
$116.91
AC Hoses
Part Number: 10039911
Other Names: Hose, AC Line, More Names
Description: Compressor hose. 2.5L. More Info
Fits:
  • Buick:
    • Skylark,
    • Somerset,
    • Somerset Regal
  • Oldsmobile:
    • Calais
  • Pontiac:
    • Grand Am
MSRP $151.70
$136.53
MSRP $151.70
$136.53
AC Hoses
Part Number: 25537189
Positions: Front, Upper
Other Names: Tube, AC Line, More Names
Description: Condenser to evaporator. All models. Upper, front. More Info
Fits:
  • Buick:
    • LeSabre
  • Oldsmobile:
    • Delta 88
  • Pontiac:
    • Bonneville,
    • Fiero
MSRP $75.74
$68.17
MSRP $75.74
$68.17
AC Hose
Part Number: 25752066
Positions: Front
Other Names: AC Hoses, F (S)Hose More Names
Description: Express, savana. 4.3l. Compressor to accumulator. Front ac unit. 4.3L, 2003-14, to accumulator, without rear ac. More Info
Fits:
  • Chevrolet:
    • Express 1500,
    • Express 2500
  • GMC:
    • Savana 1500,
    • Savana 2500
MSRP $110.22
$63.38
MSRP $110.22
$63.38
AC Hose
Part Number: 22536384
Other Names: AC Tube, More Names
Description: 2.0 & 2.2L. 2.0L to evaporator, without turbo. More Info
Fits:
  • Chevrolet:
    • Cavalier
  • Pontiac:
    • Sunbird
MSRP $32.64
$29.38
MSRP $32.64
$29.38
AC Hoses
Part Number: 22538835
Other Names: AC Line, More Names
Description: Compressor hose. All models. 2.3L. 2.3L, without ho. More Info
Fits:
  • Buick:
    • Skylark
  • Oldsmobile:
    • Cutlass Calais
  • Pontiac:
    • Grand Am
MSRP $92.16
$82.94
MSRP $92.16
$82.94
AC Hose
Part Number: 22538868
Other Names: AC Hoses, More Names
Description: Evaporator inlet. 2.0L to evaporator, with turbo. More Info
Fits:
  • Buick:
    • Skyhawk
  • Pontiac:
    • J2000 Sunbird,
    • Sunbird
MSRP $35.00
$31.50
MSRP $35.00
$31.50
AC Hose
Part Number: 22587859
Other Names: AC Hoses, More Names
Description: Suction & discharge, 4 cylinder. From rear of compressor. Chevrolet. 4 cylinder. More Info
Fits:
  • Chevrolet:
    • Cavalier
MSRP $74.97
$67.47
MSRP $74.97
$67.47
AC Tube
Part Number: 22603649
Other Names: Lines, AC Line, Tube More Names
Description: To dryer. To dehydrator. 2.4L, to drier. More Info
Fits:
  • Chevrolet:
    • Classic,
    • Malibu
  • Oldsmobile:
    • Alero,
    • Cutlass
  • Pontiac:
    • Grand Am
MSRP $91.54
$54.92
MSRP $91.54
$54.92

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