2003 GMC C4500 Topkick Cooling and Climate Controls

Essential 2003 GMC C4500 Topkick Cooling and Climate Controls

Carquest Premium – Standard Thermostat: With Seal, 180 Degrees (Part No.14738)

Standard Thermostat: With Seal, 180 Degrees

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$42.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
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Dorman – Coolant Bypass Tube O-Ring Kit (Part No.926-424)

Coolant Bypass Tube O-Ring Kit

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$19.29
This coolant O-ring kit contains all the necessary O-rings to replace or repair the engine coolant pipe on specified vehicles.

Product Features:
  • Ideal replacement – this coolant O-ring kit matches the factory O-rings to ensure a complete and reliable repair
  • Durable construction – made of quality materials for leak-free service
  • Complete solution – includes all O-rings required to repair or replace specified coolant pipe
  • Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life
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Carquest Premium – Radiator Cap Tester Adapter (Part No.12033)

Radiator Cap Tester Adapter

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$93.99
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Product Features:
  • Machined metal construction
  • Works with MT-300 pressure tester
  • Tests coolant caps
  • Professional quality
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Dorman – HVAC Blend Door Actuator: 1 Piece (Part No.604-923)

HVAC Blend Door Actuator: 1 Piece

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$33.99
This air door actuator directly replaces the original actuator on specific vehicle years, makes, models, configurations and positions to restore proper HVAC operation. Please note that many vehicles have several different air door actuators, which are designed for specific positions and functions in the vehicle. To ensure you have what you need, carefully review the application notes for this part to verify it matches the position and function of the actuator you need to replace. In some online ordering systems, you may need to enter your vehicle information first to see the application notes for your vehicle. If you don’t know which actuator position you need to replace, consult a qualified service technician.

Product Features:
  • Direct replacement – made to match the fit and function of the original air door actuator on certain vehicle years, makes, models and configurations
  • Position specific – vehicles often have multiple different HVAC door actuators; review this part’s application notes to verify it matches the location and function of the actuator you need to replace
  • Durable construction – designed and tested to strict standards to help resist wear and electrical burnout for reliable operation and long service life
  • Trustworthy quality – backed by a team of experts and engineers in the United States, and more than a century of experience
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Carquest Premium – A/C Compressor Relay Connector (Part No.PTA1171)

A/C Compressor Relay Connector

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$61.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest Standard – Reman GM HT6 Compressor w/ Clutch (Part No.DW57931)

Reman GM HT6 Compressor w/ Clutch

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$254.99
Carquest Standard compressors offer reliable, long-lasting performance for a leak-free, dependable repair.

Product Features:
  • Built in a TS16949 certified manufacturing environment to ensure consistent quality that meets or exceeds OE specifications for fit, form, function and durability
  • All remanufactured compressors are built using the latest compressor technology available today and using strict remanufacturing processes
  • All units have new seals, O-rings, gaskets and clutch bearings
  • Tested for noise, vibration, durability, vacuum decay and pressure decay to ensure no leaks and longer life
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Carquest Premium – A/C White Orifice Tube (Part No.T38623)

A/C White Orifice Tube

from

$2.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each orifice tube is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • Color coded
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Factory Air – Compressor Mounted High Cut-Out Pressure Switch (Part No.35974)

Compressor Mounted High Cut-Out Pressure Switch

from

$36.99
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Contains gaskets, O-rings, or seals to properly replace the product
  • Color coded for easy identification
  • Zinc coated to resist corrosion
  • Improved 2 terminal design replacing older 1 terminal switch
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Dorman – Remanufactured Climate Control Module (Part No.599-127)

Remanufactured Climate Control Module

from

$267.99
Climate controls stopped working? Seamlessly restore operation by easily swapping the malfunctioning original module with this fully tested replacement unit.

Product Features:
  • Direct replacement – this HVAC control module matches the appearance and function of the original unit on specific vehicles
  • Functionality-tested – module has been tested to ensure the same operation as the stock module
  • Simple installation – no advanced vehicle knowledge is required for proper installation and setup
  • Trustworthy quality – backed by team of engineers and inspectors in the United States
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Carquest Premium – Radiator: With Engine And Transmission Oil Coolers (Part No.867212)

Radiator: With Engine And Transmission Oil Coolers

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$429.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineered with integrated ribbing for added strength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
  • Oil cooler designs meet or exceed OE standards, keeping the vehicle’s engine and transmission performing at optimal conditions
  • OEM grade, premium fittings for transmission or engine oil coolers (where applicable)
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Dorman – Coolant Housing/Water Outlet: With Housing and Gasket, 180 Degree Neck Angle (Part No.902-2060)

Coolant Housing/Water Outlet: With Housing and Gasket, 180 Degree Neck Angle

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$26.49
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
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Carquest Premium – A/C Compressor Switch Connector (Part No.PTA1328)

A/C Compressor Switch Connector

from

$15.79
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Imperial – Thermostatic Fan Control – Preset (Part No.226206)

Thermostatic Fan Control - Preset

from

$38.49
Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:
  • Preset thermostatic fan control
  • 185°F preset
  • For use with Imperial electric fans
  • Probe installs into radiator fins
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Dorman – Thermostat Bypass Pipe (Part No.902-901)

Thermostat Bypass Pipe

from

$55.99
This thermostat bypass pipe is designed to match the fit and function of the original pipe on specified applications, and is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this thermostat bypass pipe is designed to match the fit and function of the original pipe on specified applications
  • Restores functionality – reliable replacement for an original part that is leaking or has failed due to corrosion
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Premium – Multi Purpose Relay (Part No.RAA1237)

Multi Purpose Relay

from

$19.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Factory Air – Compressor Mounted High Cut-Out Pressure Switch (Part No.20058)

Compressor Mounted High Cut-Out Pressure Switch

from

$29.49
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Contains gaskets, O-rings, or seals to properly replace the product
  • Color coded for easy identification
  • Zinc coated to resist corrosion
  • Improved 2 terminal design replacing older 1 terminal switch
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Carquest Premium – A/C Liquid Line Hose Assembly w/o Orifice Tube (Part No.T55825)

A/C Liquid Line Hose Assembly w/o Orifice Tube

from

$34.49
Carquest Hose Assemblies are designed to carry refrigerant in an air conditioning system. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.

Product Features:
  • 100% of hose assemblies use Goodyear hoses that meet original equipment specifications for wall thickness and permeation.
  • Tubes and mufflers are designed to meet original equipment specifications for wall thickness.
  • Fittings are designed to couple and seal to eliminate leaks. Trivalent plating is used on steel fittings to enhance corrosion resistance. The fittings conform to original equipment specifications to allow for the proper fit with related air conditioning
  • Welds and crimps meet and exceed original equipment tension specifications.
  • Manufactured to allow flexibility in the hose to conform to engine compartments.
  • O-Rings necessary for installation are included.
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Carquest Premium – A/C Compressor Relay Connector (Part No.PTA1465)

A/C Compressor Relay Connector

from

$44.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest Premium – HVAC Blower Motor Resistor (Part No.RUC1009)

HVAC Blower Motor Resistor

from

$40.99
Carquest premium direct replacement resistors are designed to match the operation and performance of the original equipment to restore the proper heating and cooling functionality.

Product Features:
  • Restores Functionality- Manufactured to original equipment specifications to restore full HVAC operation
  • Original equipment quality – Carquest blower motor resistors meet the high quality material standards and tolerances as the original equipment
  • Complete kit – Each kit includes the resistor, connector, and splice connectors to complete the job
  • Direct replacement – Carquest blower motor resistor kits are a direct replacement to the original equipment resistor
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Carquest Premium – Heater Core (Part No.398357)

Heater Core

from

$86.99
Carquest Premium offers a complete line of automotive heater cores covering 94% of all North American vehicle applications. Carquest Premium provides value in several ways, including increased thermal performance and resistance to corrosion using enhanced design features, such as the latest fin and tube technology and design standardization for maximum availability. Carquest Premium offers certified heater cores that meet or exceed OE specifications and are all fitment checked in the actual vehicle’s HVAC heater module and are, thus, ready to be installed right out of the box for a “Drop-In Fit”. Carquest Premium heater cores are engineered and manufactured under ISO TS16949 quality systems and are 100% leak tested.

Product Features:
  • All heater cores are designed and tested to match or exceed OE specifications for form, fit and performance with a clear focus on obtaining the highest heat transfer performance possible through use of quality materials and manufacturing processes to ensu
  • Carquest Premium heater cores are engineered and manufactured under ISO TS16949 quality systems and are 100% leak tested.
  • Provides value in several ways, including increased thermal performance and resistance to corrosion using enhanced design features, such as the latest fin and tube technology and design standardization for maximum availability.
  • Carquest Premium offers a complete line of automotive heater cores covering 94% of all North American vehicle applications.
  • Our advanced engineering methods coupled with our innovative manufacturing technology provides products to the aftermarket that meet or exceed form, fit, and function of OEM Parts
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Carquest Premium – A/C Accumulator (Part No.T83368)

A/C Accumulator

from

$30.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.

Product Features:
  • All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators and receiver driers are helium leak tested prior to packaging.
  • O-Rings necessary for installation are included.
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Carquest – RELAY – ACCESSORY (Part No.R3115)

RELAY - ACCESSORY

from

$27.49
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Our units are all pre-aligned & pre-adjusted to save installation time and ensure proper switching.
  • A lubricated felt pad that lubricates the cam lobes on the vehicles distributor. This reduces wear on the point set rubbing block, extending the usable life of the part.
  • Ventilated where available, tungsten contacts, which run cooler and exhibit less erosion.
  • The copper-alloy shunt provides superior resistance to breakage, due to the flexing of the moving arm on the point set. It also significantly increases current conductivity over typical steel, shunts.
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Carquest Premium – HVAC Blower Motor Resistor Connector (Part No.FAA1159)

HVAC Blower Motor Resistor Connector

from

$56.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest – A/C Auto Temperature Control Relay (Part No.R3093)

A/C Auto Temperature Control Relay

from

$18.05
Product Features:
  • Our units are all pre-aligned & pre-adjusted to save installation time and ensure proper switching.
  • A lubricated felt pad that lubricates the cam lobes on the vehicles distributor. This reduces wear on the point set rubbing block, extending the usable life of the part.
  • Ventilated where available, tungsten contacts, which run cooler and exhibit less erosion.
  • The copper-alloy shunt provides superior resistance to breakage, due to the flexing of the moving arm on the point set. It also significantly increases current conductivity over typical steel, shunts.
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Imperial – Electric Fan – 14" Diameter (Part No.226114)

Electric Fan - 14" Diameter

from

$99.99
Product Features:
  • Motors built and tested to quality specifications
  • 14 in. universal fit reversible fan
  • 1250 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
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Carquest Premium – ABS Wheel Speed Sensor (Part No.ARA1441)

ABS Wheel Speed Sensor

from

$78.99
Advance Auto Parts is committed to providing high-quality ABS sensors. The entire manufacturing process is closely managed to deliver high quality products.

Product Features:
  • High grade materials that are equal to or better than OE provide durability and long service life
  • All ABS sensors are tested for proper fit, form, and function
  • Wire diameter and sheathing same or larger than OE to ensure product quality
  • Glass filled reinforced plastic for superior resistance to automotive fluids, dirt, salt and road debris
  • Includes all necessary brackets and hardware
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Dorman – Body Bolt – M6-1.0 X 25mm (Part No.963-232D)

Body Bolt - M6-1.0 X 25mm

from

$4.49
These bolts are manufactured using durable materials and corrosion-tested to ensure required strength and longevity.

Product Features:
  • Durable materials – manufactured to specific thread tolerance standards
  • Corrosion tested – hardware undergoes salt spray testing to ensure corrosion resistance
  • Multipurpose usefulness – can be used in a variety of applications, from auto to home
  • Trustworthy quality – backed by team of professional engineers and quality control specialists in the United States
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Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T2284)

Engine Water Pump: New, Gasket/Seals Included

from

$152.99
Carquest Premium drive motor inverter cooler water pumps are 100% new, high-quality parts that meet or exceed original equipment (O.E.) specifications. All components, including the housing, impeller, controller, gaskets, and seals are designed for long-lasting service life. These electric water pumps are supplied with the gaskets or seals necessary for installation. Our Carquest Premium auxiliary water pumps undergo stringent testing to ensure superior performance that we stand behind with an industry-leading warranty.

Product Features:
  • Built to meet or exceed OE fit, form and function
  • All components necessary for installation are supplied with pump
  • 100% tested for reliable performance
  • Follow all enclosed instructions to maximize pump life and validate warranty
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2003 GMC C4500 Topkick Cooling and Climate Controls

You count on your 2003 GMC C4500 Topkick to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Cooling and Climate Controls. With 67 Cooling and Climate Controls ranging in price from $2.99 to $429.99, you’re sure to find everything you need for your 2003 GMC C4500 Topkick.

Brands matter. If you want to shop a specific Cooling and Climate Controls brand, we stock 9 different brands like Carquest Premium, Imperial, and Dorman. 2003 GMC C4500 Topkick Cooling and Climate Controls start as low as $2.99!

One of the best ways to find top quality OEM or aftermarket Cooling and Climate Controls is by asking professionals. Short of that, you can shop with confidence thanks to our 5,916 extensive product reviews on 2003 GMC C4500 Topkick Cooling and Climate Controls. Some of the top-rated Cooling and Climate Controls products we carry are Adjustable Thermostatic Fan Control with 4.8 stars and Adjustable Thermostatic Fan Control with 3.4 stars.

Did we mention you can order your Cooling and Climate Controls from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Cooling and Climate Controls inventory for your 2003 GMC C4500 Topkick below to get started!

Top-Rated Cooling and Climate Controls Brands For Your 2003 GMC C4500 Topkick

Trusted Cooling and Climate Controls OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 GMC C4500 Topkick running right for years to come. In our inventory you’ll find brands like Carquest Premium, Imperial, Dorman, and even more.

Popular Motorad Cooling and Climate Controls

You’ll find popular Motorad brand products across Engine Cooling Parts. All are waiting to get your 2003 GMC C4500 Topkick back on the road. Some of the top-rated Motorad products in these categories are:

Top-Rated Carquest Premium Cooling and Climate Controls


If Carquest Premium are what you’re looking for, our inventory holds plenty. We stock Carquest Premium brand Cooling and Climate Controls for your 2003 GMC C4500 Topkick, and some of our most reviewed Carquest Premium parts include:
Standard Thermostat: With Seal, 195 Degrees
from $7.29
(105)
Standard Thermostat: With Seal, 195 Degrees
Thermostats
A/C White Orifice Tube
from $2.99
(97)
A/C White Orifice Tube
Expansion Valve and Orifice Tubes
Severe Temp Automatic Adjusting Orifice Tube
from $15.99
(97)
Severe Temp Automatic Adjusting Orifice Tube
Expansion Valve and Orifice Tubes

FAQs for 2003 GMC C4500 Topkick Cooling and Climate Controls

What are the most purchased Cooling and Climate Controls for the 2003 GMC C4500 Topkick?

Out of 67 Cooling and Climate Controls for the 2003 GMC C4500 Topkick, the most popular in our inventory are:
Radiator Cap: 15 PSI
from $14.99
(59)
Radiator Cap: 15 PSI
Coolant Reservoir Caps
Body Bolt - M6-1.0 X 25mm
from $4.49
This product is not rated
Body Bolt – M6-1.0 X 25mm
AC Hose Bolt
Thermostat: With Seal, 195 Degrees
from $16.79
This product is not rated
Thermostat: With Seal, 195 Degrees
Thermostats

What are the top-rated 2003 GMC C4500 Topkick Cooling and Climate Controls?

Top-rated Cooling and Climate Controls for your 2003 GMC C4500 Topkick based on customer reviews/ratings are:
Adjustable Thermostatic Fan Control
from $22.99
(35)
Adjustable Thermostatic Fan Control
“Advance kicks butt”
Adjustable Thermostatic Fan Control
from $55.99
(33)
Adjustable Thermostatic Fan Control
“If you read the instructions it’s pretty self explanatory.”
A/C Standard Temp Automatic Adjusting Orifice Tube
from $15.79
(28)
A/C Standard Temp Automatic Adjusting Orifice Tube
“exact fit”