Hi all! Need some help on finding the part number for the OEM GM hose clamps (the spring clamps, not the worm gear clamps) for the outlet on the coolant reservoir, as well as the OEM GM hose clamps for the opposite end of the coolant reservoir (engine side), and the clamp for the heater hose (attached to the engine side). I think they may all be the same part number, but I am not 100% sure of that.

I've been having a mysterious coolant leak for a while now, and was worried it might be a head gasket issue, since I have an 07 Tahoe (5.3L) with about 364K miles on it. I took a more closer look at it yesterday, and I think I have narrowed it down to the worm gear clamp the idiot dealer tech used when I had my radiator and all the hoses replaced. He decided to use worm gear clamps instead of reusing the OEM spring clamps. I hate worm gear clamps with all my being!

I've searched online at my typical go to GM parts site, but I see the coolant reservoir, but the spring clamps are not shown in the diagram.

I see used reservoirs on ebay which will come with the clamps, but I'll end up overpaying.

Any help is appreciated!

 

Interesting, because I've always replaced the spring-type clamps with made-in-USA worm drive clamps, and just throw the GM clamps into my "hose clamps" box. I can't comment favorably about having a dealer replace your hoses, but unless they wanted to pad up your bill, I cannot understand why they didn't just re-use your existing spring-type hose clamps.

If me, I'd get a loaner tool coolant pressure kit from auto parts store and pump up the cooling system pressure to identify the source of your leak, then address that.