Your 2003 Chevrolet Silverado 2500 HD might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Radiator product you desperately need.
We currently carry 12 Radiator products to choose from for your 2003 Chevrolet Silverado 2500 HD, and our inventory prices range from as little as $209.43 up to $559.99.
On top of low prices, Advance Auto Parts offers 4 different trusted brands of Radiator products for the 2003 Chevrolet Silverado 2500 HD. We only sell parts from trusted brands like Carquest Premium so that you can find quality parts you can count on.
Don’t take our word for it - check out customer ratings and reviews to buy with confidence. We have 1,162 reviews on our Radiator products for the 2003 Chevrolet Silverado 2500 HD from previous customers.
Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Radiator stock in-person!
Search through our amazing selection of Radiator products for your 2003 Chevrolet Silverado 2500 HD to find exactly what you’re looking for. Compare prices and reviews to choose the best part for you.
Submitted 2022-02-13
By Chris
From MS
Installed exactly as expected in a 2001 Chevy Tahoe with a 5.3L. Working great.
Bottom Line recommended
Submitted 2021-11-05
By T
From morley mi
they gave me the tool to get trans lines out of old radiator new radiator lined right up
Bottom Line recommended
Submitted 2021-11-01
By Patrick
From Undisclosed
Perfect change out for a 2006 GMC Yukon SLT with a 5.3L motor. High quality and no issues.
Bottom Line NULL
from $289.99
View ProductSubmitted 2023-03-12
By Jesus
From Phoenix Arizona
Usually car quest parts are very reliable but not lately radiator started leaking 6 months after purchase
Bottom Line not recommended
Submitted 2022-01-31
By Stephen
From InTifton, GA
Biggest issue was the fittings for oil cooler were not exact fit for 07 2500hd k vin. Couldn't push them in far enough for snap rings to lock. Had to end up bending the flange on the fitting out a little and filing the inside diameter of fittings after that. The fittings were not removable like the previous radiator i replaced. Those fittings worked fine but couldn't swap them over. Everything else was just like it was supposed to be
Bottom Line not recommended
Submitted 2021-08-15
By Bennie
From Undisclosed
Box had been opened and drain tube holder on radiator was broken other than that fit and form were satisfactory...
Bottom Line NULL
from $299.99
View ProductSubmitted 2020-06-20
By DuraMatt
From Marietta,Ga
Radiator is keeping my LB7 ice cold but radiator arrived with some with some pretty nice dings n dents on the fins . Tranny line fittings were wrong for my Allison 1000 5 speed it needed a larger fitting than the one supplied on the radiator. Luckily I was able to pull off the fitting of the previous radiator to make do , take note the fittings did thread in well but make sure to re use the washers that the new radiator came with . Don't quote me but beware of the tranny fitting size change in 2003 . Well radiator works no leaks even though it was damaged upon arrival.
Bottom Line recommended
Submitted 2018-05-06
By Robert
From undisclosed
This was an OEM replacement radiator for my 2003 GMC Duramax. Under the excellent CARQUEST brand name. I did an 'in store' pickup, and had placed the order online. It arrived on time, and was waiting for me. The radiator fit perfectly, the transmission connections fit. Best of all, it doesn't leak ! No problems...so far. I only gave this 4 stars because I have not gone on a long trip to really 'wring it out', but all indications are that everything is fine. Very positive experience !
Bottom Line NULL
Submitted 2018-01-26
By Timothy
From undisclosed
Exact fit good price
Bottom Line NULL
from $441.99
View ProductSubmitted 2020-12-22
By Jason
From Undisclosed
Terrible quality all for cooler line fittings leak. Oh ring was very cheap ended up replacing with a rubber gaskets. Item came broken but had to use it regardless because I needed the truck immediately. And defense it looked like it was returned that is probably why it was broken but the leaking issue is Very poor quality
Bottom Line NULL
Submitted 2017-11-10
By Andrew
From undisclosed
Works great
Bottom Line NULL
from $349.99
View Productfrom $278.99
View Productfrom $360.71
View Productfrom $559.99
View Productfrom $215.46
View Productfrom $254.87
View Productfrom $251.38
View Productfrom $214.28
View Productfrom $209.43
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