1AROB00004-Chevrolet GMC Coolant Reservoir


Chevrolet GMC Coolant Reservoir Dorman 603-100


This part replaces:

  • Dorman 603-100
  • Hollander 671-00218
  • OE # 15650373
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Part 1AROB00004
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Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Brand #: 603-100
Vehicle Fit
Warranty & Shipping
How-To & Tools

Item Condition: New

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

  1. step : Removing the Coolant Overflow Bottle (0:41)
    • Remove the two 13mm bolts from the overflow bottle
    • Lift the bottle up and out
    • Turn the bottle on its side
    • Disconnect the clip from the lower hose with a flat blade screwdriver
    • Remove the lower hose
    • Plug the hole on the coolant bottle to prevent coolant from leaking
  2. step : Installing the Coolant Overflow Bottle (1:41)
    • Remove the upper hose from the old bottle and attach it to the new one
    • Push the lower hose onto the bottle
    • Slide the hose clamp up
    • Pinch the hose clamp with channel-lock pliers
    • Insert the coolant bottle into its slot
    • Insert and tighten the 13mm bolts to the overflow bottle

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 13mm Socket

Fits the following Makes:

Year Make Model Description
1992-1994Chevrolet Blazer Full Size Chevrolet Blazer Full Size Coolant Reservoir
1988-1998Chevrolet C1500 Truck Chevrolet C1500 Truck Coolant Reservoir
1988-1998Chevrolet C2500 Truck Chevrolet C2500 Truck Coolant Reservoir
1988-1998Chevrolet C3500 Truck Chevrolet C3500 Truck Coolant Reservoir
1988-1998Chevrolet K1500 Truck Chevrolet K1500 Truck Coolant Reservoir
1988-1998Chevrolet K2500 Truck Chevrolet K2500 Truck Coolant Reservoir
1988-1998Chevrolet K3500 Truck Chevrolet K3500 Truck Coolant Reservoir
1992-1999Chevrolet Suburban C1500 Chevrolet Suburban C1500 Coolant Reservoir
1992-1999Chevrolet Suburban C2500 Chevrolet Suburban C2500 Coolant Reservoir
1992-1999Chevrolet Suburban K1500 Chevrolet Suburban K1500 Coolant Reservoir
1992-1999Chevrolet Suburban K2500 Chevrolet Suburban K2500 Coolant Reservoir
1995-1999Chevrolet Tahoe Chevrolet Tahoe Coolant Reservoir
1988-1998GMC C1500 Truck GMC C1500 Truck Coolant Reservoir
1988-1998GMC C2500 Truck GMC C2500 Truck Coolant Reservoir
1988-1998GMC C3500 Truck GMC C3500 Truck Coolant Reservoir
1988-1998GMC K1500 Truck GMC K1500 Truck Coolant Reservoir
1988-1998GMC K2500 Truck GMC K2500 Truck Coolant Reservoir
1988-1998GMC K3500 Truck GMC K3500 Truck Coolant Reservoir
1992-1999GMC Suburban C1500 GMC Suburban C1500 Coolant Reservoir
1992-1999GMC Suburban C2500 GMC Suburban C2500 Coolant Reservoir
1992-1999GMC Suburban K1500 GMC Suburban K1500 Coolant Reservoir
1992-1999GMC Suburban K2500 GMC Suburban K2500 Coolant Reservoir
1992-1999GMC Yukon GMC Yukon Coolant Reservoir
2000GMC Yukon XL 1500 GMC Yukon XL 1500 Coolant Reservoir
2000GMC Yukon XL 2500 GMC Yukon XL 2500 Coolant Reservoir

Part Interchange

Brand Label Part Number
DIY Solutions HVA02636

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

Brand #: 603-100
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