OEM GM AC System Parts

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Your factory GM air conditioning and heating system keeps you comfortable no matter the weather outside. The mechanics involved in how your HVAC system cools, heats, and ventilates your passenger space aren’t all that complicated, frankly.

Your HVAC System at Work

The heater's most simple. Hot coolant is drawn from the engine and into a heater core. A front-mounted fan blows over the core fins, which sends warm air through the vents and into the cabin. Your air conditioning system consists of four major parts. The compressor pressurizes the refrigerant to convert it into a hot gas. The condenser then cools that gas and turns it into a liquid. The fluid then flows through the expansion valve and becomes a gas again, but at low pressure. Finally, an evaporator uses a fan to quickly cool the gas down again. The resulting chilled air is routed through the ducts to your air vents, where it disperses into the cabin.

How to Spot AC System Problems

Even the best AC system components can begin to fail, though. Here are some signs of that:

  • The cabin atmosphere gets steamy
  • You can't maintain a consistent cabin temperature
  • You notice the sweet smell of coolant

If you have trouble keeping your passenger space cool, check your cabin air filter first. If it’s in good shape, then you'll want to examine the hoses and other AC system components. If something does need to be replaced, make sure that you use the best part for the job. That's going to be a genuine GM part, since they're the only ones that are guaranteed to fit your model. Our online auto parts department has plenty in stock and ready to ship directly to your front door. Buy now and save!

AC & Heater Assembly
MSRP $295.30
$183.97
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
AC & Heater Case
MSRP $227.30
$124.22
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
AC & Heater Case
MSRP $145.02
$91.61
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
HVAC Air Inlet Door Actuator
MSRP $18.98
$17.08
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
HVAC Air Inlet Door Actuator
MSRP $95.10
$54.11
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
HVAC Re-Circulation Door Actuator Lever
MSRP $45.58
$25.94
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
Pressure Cycling Switch
MSRP $21.82
$13.07
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
Switch
MSRP $66.92
$38.08
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
Switch
MSRP $56.57
$32.19
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
Lower Case Stud
MSRP $8.38
$5.02
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
Relay
MSRP $30.92
$18.52
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
AC Hoses
MSRP $377.53
$206.33
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
AC Hoses
MSRP $223.42
$122.10
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
AC Hoses
MSRP $139.32
$125.39
Part Number: 22582192
Other Names: AC Hose, Lines, Hose & Tube Assembly, More Names
Description: 3.1L. More Info
Fits:
  • Chevrolet:
    • Beretta,
    • Corsica
AC Hose
MSRP $141.41
$127.27
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
AC Hose
MSRP $161.58
$145.42
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
AC Tube
MSRP $80.38
$45.74
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
AC Line
MSRP $86.45
$77.81
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
AC Line
MSRP $59.24
$33.71
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
AC Hose
MSRP $210.02
$114.78
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
AC Hose
MSRP $219.58
$120.00
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
AC Line
MSRP $78.32
$70.49
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
AC Tube
MSRP $62.22
$35.40
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
AC Hoses
MSRP $198.46
$109.95
Part Number: 92186149
Other Names: AC Tube, F (S)Hose More Names
Description: Valve to compressor. GTO. More Info
Fits:
  • Pontiac:
    • GTO
AC Tube
MSRP $234.78
$128.31
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
AC Hose
MSRP $93.87
$84.48
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
AC Tube
MSRP $129.90
$116.91
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
AC Hoses
MSRP $151.70
$136.53
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
AC Hoses
MSRP $75.74
$68.17
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
AC Hose
MSRP $110.22
$61.06
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
AC Hose
MSRP $32.64
$29.38
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
AC Hoses
MSRP $92.16
$82.94
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
AC Hose
MSRP $35.00
$31.50
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
AC Hose
MSRP $74.97
$67.47
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
AC Tube
MSRP $91.54
$52.09
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

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