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OT- 93 S-10 Blazer heater core question ..

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mike in New Mex

12-07-2006 18:01:32

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I have a Haynes book for this vehicle but it does not help much. Has anybody ever changed the heater core on a 93 S-10 Blazer? Does the whole dash got to be removed? If anybody has experience in this, please respond. Mike

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mike in New Mexico

12-08-2006 08:31:20

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Re: OT- 93 S-10 Blazer heater core question .. in reply to mike in New Mexico, 12-07-2006 18:01:32

Well I got every thing unbolted under the dash but the ECM won't let the cover come out, and I can't seem to get the ECM out of the way ,

Any Ideas ??Thanks -mike

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Bob

12-08-2006 09:33:38

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Re: OT- 93 S-10 Blazer heater core question .. in reply to mike in New Mexico, 12-08-2006 08:31:20

The ECM should either come down by removing a couple of screws, or maybe you have to depress a release tab, then slide the ECM out of a mount, then remove the mount.

Sometimes the darned things are held into the mount with double-sided foam tape, and you have to cut them loose, or tear them loose from the tape.

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Ken Tallman

12-08-2006 08:07:23

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Re: OT- 93 S-10 Blazer heater core question .. in reply to mike in New Mexico, 12-07-2006 18:01:32

I replaced a heater core in my 92 S10 blazer. I had to loosen the dash and slide it back a little bit to get the heater core out. It took me about 5 hours. Hardest part of the whole job is that there is not a lot of room. to work.

Ken

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PeteNH

12-07-2006 19:39:53

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Re: OT- 93 S-10 Blazer heater core question .. in reply to mike in New Mexico, 12-07-2006 18:01:32

I have a 1997 Blazer. I believe the 93 is similar. To change the heater cord I had to take the entire dash out. It took me about 6 hours working by myself. No hard to do just a lot to unbolt.

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Bob

12-07-2006 19:51:37

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Re: OT- 93 S-10 Blazer heater core question .. in reply to PeteNH, 12-07-2006 19:39:53

1994 was the last year of the "boxy" mini-Blazer.

1995 and later are the new, rounded design.

I put a heat core in a 1994 several years ago (which SHOULD be very similar to the 1993), and while I don't remember the exact details, I can't recall it being too bad of a job, I certainly can't recall having to pull the whole dash. Of course, I could be suffering from CRS again!

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Waljohn

12-08-2006 03:55:38

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Re: OT- 93 S-10 Blazer heater core question .. in reply to Bob, 12-07-2006 19:51:37

93 was the last year for the box. I have a 94 with the rounded design (217,000+ miles and going strong).

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Bob

12-08-2006 06:55:59

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Re: OT- 93 S-10 Blazer heater core question .. in reply to Waljohn, 12-08-2006 03:55:38

Is your '94 a Blazer or a pickup?

It is my understanding the S-10 pickups got restyled in 1994, and the Blazers in 1995, unless it was a mid-year 1994 thing with the Blazers.

I have a 1994 babyblazer, an it is DEFINITELY the boxy, older style.

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Waljohn

12-08-2006 12:11:57

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Re: OT- 93 S-10 Blazer heater core question .. in reply to Bob, 12-08-2006 06:55:59

I have the pickup. Did not know the blazer didn't change then, too.

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bradk

12-07-2006 19:15:08

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Re: OT- 93 S-10 Blazer heater core question .. in reply to mike in New Mexico, 12-07-2006 18:01:32

It's been a while since I did,but no,the dash doesn't have to come out.The bezel around the radio and the panel at rear of inside of glove-box has to come out.
The 2 worst things about the job is reconnecting the air tube and connector on top of the heater case and the top screws for the core cover.
3hrs to R&R.
Hope this helps.You can do it!
~brad

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troy21

12-07-2006 18:18:06

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Re: OT- 93 S-10 Blazer heater core question .. in reply to mike in New Mexico, 12-07-2006 18:01:32

i frogot what year my buddies is but we had to take the hole dash out.. it was a pain in the neck

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old art

12-07-2006 18:18:01

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Re: OT- 93 S-10 Blazer heater core question .. in reply to mike in New Mexico, 12-07-2006 18:01:32

go to auto zone or pepboys they have books you can read in the store may help

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