ECC reprogram ? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-15-2006, 12:47 AM   #1
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Default ECC reprogram ?

I did a serch on my below climate control problem. This started after having the battery disconnected overnight, anyone know the reprogram procedure ?
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Old 10-15-2006, 12:53 AM   #2
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Try looking here. Nope, maybe not.
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Old 10-15-2006, 01:02 AM   #3
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no good mine is a 1999 thanks anyway
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Old 10-15-2006, 01:07 AM   #4
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Oops, my bad, misread it.
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Old 10-15-2006, 01:51 AM   #5
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Your signature says you have a 98, not a 99.

Reprogram WHAT? I'm confused by your question.
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Old 10-15-2006, 10:26 AM   #6
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Default I have a 1998 sorry

I have a climate control problem, see above post, I understand there is a reprogram for when the battery has been removed and your ecc flashes ??
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Old 10-15-2006, 02:43 PM   #7
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Default update

ok here is the latest. I took the glove box out and looked in the hole at the rod that opens and closes the mixing door. Here is what I came up with, in the fan high position the door goes to hot no problem, if you try to go down to cold it stops about half way, if you reach in with a screwdriver and give it just alittle push it continues all the way to cold. NOW; if you turn the fan setting to lowest spot and repeat the above all works fine. It is almost like maybe a vaccum problem or something doesn't hve enoug strength to push the door shut against a hi fan speed ? I see no way of getting at the motor that drives the rod at all without a sawzalll or chain sawing the dash out ! Wher is the vaccum line that operates that door ? Or where does it pull vaccum from ? There is no vaccum box next to the brake master cyl. The temp still flashes for awhile and then stops. This ALL started when my starter switch fried and I left the battery disconnected overnight. Never had this issue before. I hate to put alot of cash into a car with 200k plus miles but maybe its something simple ??
Thanks guys and lets hear some feedback !
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Old 10-15-2006, 03:04 PM   #8
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Check the vacuum fittings on the vacuum accumulator between the maxifuse relay center and WS wiper motor assembly. They're underneath. This is the source of the actuator vacuum.
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Old 10-15-2006, 03:06 PM   #9
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Underneath the maxi fuse panel ? Do I remove the cover ? How do i check the vaccum ? Thanks.
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Old 10-15-2006, 07:22 PM   #10
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Are you talking about an electric Mode Door Actuator or Vacuum Actuator.

Here is a picture of an electric actuator.

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