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-   -   1999 Olds 88 3.8 heater hoses (https://www.gmforum.com/oldsmobile-171/1999-olds-88-3-8-heater-hoses-314336/)

JeffW2022 Jul 7, 2022 10:29 AM

1999 Olds 88 3.8 heater hoses
 
I was checking things out under the hood of my car, and was looking at the heater hoses. I noted that they went from the engine, and went in behind the RH strut tower. Curious as where access to the hose clamps at the heater core end are, in the event I needed to replace the hoses. The clamps on the engine side, are easy to get to.

I did search Google, but as usual I get everything but what I am actually searching for.

carfixer007 Jul 7, 2022 01:12 PM

Are you having a problem?

JeffW2022 Jul 7, 2022 03:46 PM


Originally Posted by carfixer007 (Post 1644225)
Are you having a problem?

No, but would like to know how to access the heater core end of the hoses IF I ever had to replace them. As of now they look to be in decent shape, and I can barely make out GM part numbers on them.

carfixer007 Jul 7, 2022 04:11 PM

So no problems. That's good. I have the factory service literature for that. Seems to me they just went right around and into the box. I think you need to pull the box.
I'll look it up.

JeffW2022 Jul 8, 2022 12:18 AM


Originally Posted by carfixer007 (Post 1644227)
So no problems. That's good. I have the factory service literature for that. Seems to me they just went right around and into the box. I think you need to pull the box.
I'll look it up.

Ok thanks. All I could see was where they went in behind the strut tower

carfixer007 Jul 8, 2022 01:23 PM

Well Mitchell don't have the procedure for the heater core.At least I didn't find it. The box I believe can be removed from under the hood. Look for little screws around the housing.

CathedralCub Jul 10, 2022 11:59 PM

You need remote hose clamp pliers like this:

https://cimg1.ibsrv.net/gimg/www.gmf...da12503ff4.png

No other way to do this that I know of. Once they're off I guess you could replace with screw-type clamps, but that would be a pain too. When I did hoses on my 1997 LeSabre (same platform/engine/hoses/Maxifuse box as your 1999 88) this worked like a dream . . . especially after trying all kinds of contortions to get to them. I just put the same factory spring clamps back on everything when I was done. That was ~95,000 miles ago. It has ~251,000 on it now.

JeffW2022 Jul 11, 2022 07:21 PM

GM and their special tools.... :banghead:

CathedralCub Jul 11, 2022 08:49 PM

These you can get outside of GM, but yeah I know what you mean; GM special tool part number 4894837489209 or something.

JeffW2022 Jul 12, 2022 06:41 PM


Originally Posted by CathedralCub (Post 1644275)
These you can get outside of GM, but yeah I know what you mean; GM special tool part number 4894837489209 or something.

Yeah "Use GM tool 123456789987654321.6" or equivalent


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