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Availability: 997 In Stock
Product Type: Coolant Overflow Tank
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Cadillac H2 Coolant Reservoir: Essential for Your Vehicle’s Performance

Cadillac H2 coolant reservoir Specifications:
Thicker materials,stronger welds. 
Durable alloy aluminum to withstand temperature variations and the corrosive nature of coolant,fast cooling for improved performance. 
Quick pressure relief to protect you radiator and other components due to over pressure.
Designed to fit in the same location as the stock tank,easy bolt-on installation.
Proper installation and maintenance are crucial for optimal.
Color: Powder silver (If you need other colors, please contact us)
 

Part Number: 

15203949, 15778386, 15808715, 603-102


Fitment:
Make Model Year
Cadillac Escalade 2002-2006
Cadillac Escalade ESV 2003-2006
Cadillac Escalade EXT 2002-2006
Chevrolet Avalanche 1500 2002-2006
Chevrolet Avalanche 2500 2002-2006
Chevrolet Silverado 1500 1999-2006
Chevrolet Silverado 1500 Classic 2007
Chevrolet Silverado 1500 HD 2001-2003
Chevrolet Silverado 1500 HD 2005-2006
Chevrolet Silverado 1500 HD Classic 2007
Chevrolet Silverado 2500 1999-2004
Chevrolet Silverado 2500 HD 2001-2006
Chevrolet Silverado 2500 HD Classic 2007
Chevrolet Silverado 3500 2001-2006
Chevrolet Silverado 3500 Classic 2007
Chevrolet Suburban 1500 2000-2006
Chevrolet Suburban 2500 2000-2006
Chevrolet Tahoe 2000-2006
GMC Sierra 1500 1999-2006
GMC Sierra 1500 Classic 2007
GMC Sierra 1500 HD 2001-2003
GMC Sierra 1500 HD 2005-2006
GMC Sierra 1500 HD Classic 2007
GMC Sierra 2500 1999-2004
GMC Sierra 2500 HD 2001-2006
GMC Sierra 2500 HD Classic 2007
GMC Sierra 3500 2001-2006
GMC Sierra 3500 Classic 2007
GMC Yukon 2000-2006
GMC Yukon XL 1500 2000-2006
GMC Yukon XL 2500 2000-2006
Hummer H2 2003-2009

Understanding the Cadillac H2 Coolant Reservoir

The Cadillac H2 coolant reservoir plays a crucial role in the vehicle's cooling system. It stores excess coolant that escapes from the radiator during engine operation. As the engine heats up, coolant expands and flows into the reservoir. This process ensures that the engine remains cool, effectively preventing overheating. Because of its function, having a reliable coolant reservoir is essential for maintaining optimal vehicle performance. A faulty tank can lead to coolant leaks, which can result in engine damage over time.

Signs of a Failing Overflow Tank

If you notice coolant pooling under your Cadillac H2, it may indicate a problem with the coolant reservoir. This can result from cracks or leaks in the material. Additionally, if your engine temperature gauge frequently rises, it’s essential to check the coolant levels. Ignoring these signs can lead to overheating, resulting in costly repairs. Consequently, regular inspection of the coolant reservoir can save you time and money, so be proactive about your vehicle's health.

How to Replace the Cadillac H2 Coolant Reservoir

Replacing the Cadillac H2 coolant reservoir is a straightforward process that can be done at home. First, ensure the engine is cool and the coolant cap is removed to relieve pressure. Then, detach the existing reservoir by removing any clamps and hoses. Next, install the new reservoir in reverse order, making sure all connections are secure. After the installation, refill the coolant and check for any leaks. Therefore, maintaining your coolant reservoir ensures your vehicle stays in top condition, enhancing longevity and performance.


Cadillac H2 Coolant Reservoir: Essential for Your Vehicle’s Performance

Cadillac H2 coolant reservoir Specifications:
Thicker materials,stronger welds. 
Durable alloy aluminum to withstand temperature variations and the corrosive nature of coolant,fast cooling for improved performance. 
Quick pressure relief to protect you radiator and other components due to over pressure.
Designed to fit in the same location as the stock tank,easy bolt-on installation.
Proper installation and maintenance are crucial for optimal.
Color: Powder silver (If you need other colors, please contact us)
 

Part Number: 

15203949, 15778386, 15808715, 603-102


Fitment:
Make Model Year
Cadillac Escalade 2002-2006
Cadillac Escalade ESV 2003-2006
Cadillac Escalade EXT 2002-2006
Chevrolet Avalanche 1500 2002-2006
Chevrolet Avalanche 2500 2002-2006
Chevrolet Silverado 1500 1999-2006
Chevrolet Silverado 1500 Classic 2007
Chevrolet Silverado 1500 HD 2001-2003
Chevrolet Silverado 1500 HD 2005-2006
Chevrolet Silverado 1500 HD Classic 2007
Chevrolet Silverado 2500 1999-2004
Chevrolet Silverado 2500 HD 2001-2006
Chevrolet Silverado 2500 HD Classic 2007
Chevrolet Silverado 3500 2001-2006
Chevrolet Silverado 3500 Classic 2007
Chevrolet Suburban 1500 2000-2006
Chevrolet Suburban 2500 2000-2006
Chevrolet Tahoe 2000-2006
GMC Sierra 1500 1999-2006
GMC Sierra 1500 Classic 2007
GMC Sierra 1500 HD 2001-2003
GMC Sierra 1500 HD 2005-2006
GMC Sierra 1500 HD Classic 2007
GMC Sierra 2500 1999-2004
GMC Sierra 2500 HD 2001-2006
GMC Sierra 2500 HD Classic 2007
GMC Sierra 3500 2001-2006
GMC Sierra 3500 Classic 2007
GMC Yukon 2000-2006
GMC Yukon XL 1500 2000-2006
GMC Yukon XL 2500 2000-2006
Hummer H2 2003-2009

Understanding the Cadillac H2 Coolant Reservoir

The Cadillac H2 coolant reservoir plays a crucial role in the vehicle's cooling system. It stores excess coolant that escapes from the radiator during engine operation. As the engine heats up, coolant expands and flows into the reservoir. This process ensures that the engine remains cool, effectively preventing overheating. Because of its function, having a reliable coolant reservoir is essential for maintaining optimal vehicle performance. A faulty tank can lead to coolant leaks, which can result in engine damage over time.

Signs of a Failing Overflow Tank

If you notice coolant pooling under your Cadillac H2, it may indicate a problem with the coolant reservoir. This can result from cracks or leaks in the material. Additionally, if your engine temperature gauge frequently rises, it’s essential to check the coolant levels. Ignoring these signs can lead to overheating, resulting in costly repairs. Consequently, regular inspection of the coolant reservoir can save you time and money, so be proactive about your vehicle's health.

How to Replace the Cadillac H2 Coolant Reservoir

Replacing the Cadillac H2 coolant reservoir is a straightforward process that can be done at home. First, ensure the engine is cool and the coolant cap is removed to relieve pressure. Then, detach the existing reservoir by removing any clamps and hoses. Next, install the new reservoir in reverse order, making sure all connections are secure. After the installation, refill the coolant and check for any leaks. Therefore, maintaining your coolant reservoir ensures your vehicle stays in top condition, enhancing longevity and performance.


Please feel free to contact us if you have any questions Email erica.wang@hcspeed.com

HCSPEED Payment Methods

All forms of payment through Paypal are acceptable.

Please do check your models / years carefully before your purchase.

Please feel free to contact us if you have any questions Email erica.wang@hcspeed.com

HCSPEED Payment Methods

All forms of payment through Paypal are acceptable.

Please do check your models / years carefully before your purchase.

Please feel free to contact us if you have any questions Email erica.wang@hcspeed.com

HCSPEED Shipping & Handling Policy

HCSPEED Shipping & Handling Policy

We POST for all customers.

Your item should be sent out usually within 1-5 days after we received your payment.

HCSPEED  POST for all customers. We will ship from China, the US, UK, AU according to the location of the inventory.
USWC Warehouse:  
18501 Arenth Ave  #85617435 ,  City of Industry  California  91748  US

UK Warehouse:
Unit 73 Interlink Way West  #85617435 ,  Leicester  Leicestershire  LE67 1LD  UK

AU Warehouse:
Warehouse 2, 54 Ferndell St  #85617435 ,  SOUTH GRANVILLE  New South Wales  2142  AU

Our shipping time frames depend on where you are located and vary depending on the shipping method selected. All orders are processed within 1-3 business days. If you place an order on Friday it will most likely not processed until the following Monday. Keep this in mind if you are selecting the express or overnight shipping option. We aim to deliver all orders within 3-7 business days but for some areas outside of the USA, delivery can take up to 2-3 weeks.

We strongly recommend that you dispatch to a reliable address, Quad Lock is not responsible for Los/stolen orders.

After your order is dispatched, you will receive shipping details via email.

Note: Please contact for a quote if international postage NOT display

Email:  erica.wang@hcspeed.com

Please feel free to contact us if you have any questions Email erica.wang@hcspeed.com

HCSPEED Shipping & Handling Policy

HCSPEED Shipping & Handling Policy

We POST for all customers.

Your item should be sent out usually within 1-5 days after we received your payment.

HCSPEED  POST for all customers. We will ship from China, the US, UK, AU according to the location of the inventory.
USWC Warehouse:  
18501 Arenth Ave  #85617435 ,  City of Industry  California  91748  US

UK Warehouse:
Unit 73 Interlink Way West  #85617435 ,  Leicester  Leicestershire  LE67 1LD  UK

AU Warehouse:
Warehouse 2, 54 Ferndell St  #85617435 ,  SOUTH GRANVILLE  New South Wales  2142  AU

Our shipping time frames depend on where you are located and vary depending on the shipping method selected. All orders are processed within 1-3 business days. If you place an order on Friday it will most likely not processed until the following Monday. Keep this in mind if you are selecting the express or overnight shipping option. We aim to deliver all orders within 3-7 business days but for some areas outside of the USA, delivery can take up to 2-3 weeks.

We strongly recommend that you dispatch to a reliable address, Quad Lock is not responsible for Los/stolen orders.

After your order is dispatched, you will receive shipping details via email.

Note: Please contact for a quote if international postage NOT display

Email:  erica.wang@hcspeed.com

RETURN POLICY

Store Return Policy
Warranty is 6 months,How to return a product purchased at an HCSPEED Store:
To return a product to an HCSPEED store, bring back an item in its original condition and packaging, with receipt, within 30 days of the purchase date to request a refund. Return a defective item within the warranty period. Requests for refunds may be denied if the item has been used or installed.



To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at erica.wang@hcspeed.com. If your return is accepted, we’ll send you a return address, as well as instructions where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at erica.wang@hcspeed.com.

All returns to an HCSPEED store are subject to the Store Return Policy, and not all products are eligible for returns. For instance, all sales of customized items are final, and not eligible for returns.

HCSPEED recommends that you return the product to the HCSPEED Fulfillment Center using a carrier that provides package tracking services to ensure your product gets back to HCSPEED safely and quickly.   If product is return-eligible, your credit card will be credited for the full price of the product, but your shipping charges will not be reimbursed.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.


Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.


Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.


Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

RETURN POLICY

Store Return Policy
Warranty is 6 months,How to return a product purchased at an HCSPEED Store:
To return a product to an HCSPEED store, bring back an item in its original condition and packaging, with receipt, within 30 days of the purchase date to request a refund. Return a defective item within the warranty period. Requests for refunds may be denied if the item has been used or installed.



To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at erica.wang@hcspeed.com. If your return is accepted, we’ll send you a return address, as well as instructions where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at erica.wang@hcspeed.com.

All returns to an HCSPEED store are subject to the Store Return Policy, and not all products are eligible for returns. For instance, all sales of customized items are final, and not eligible for returns.

HCSPEED recommends that you return the product to the HCSPEED Fulfillment Center using a carrier that provides package tracking services to ensure your product gets back to HCSPEED safely and quickly.   If product is return-eligible, your credit card will be credited for the full price of the product, but your shipping charges will not be reimbursed.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.


Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.


Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.


Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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