no heat after reconnecting battery - Page 2 - 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 01-03-2010, 05:29 PM   #11
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Oh ok...then I would suggest recalibrating the air mix actuator arm.

The procedure is found in the trailnuts article...
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Old 01-03-2010, 08:20 PM   #12
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The actuator is moving the door because when the display starts flashing and the actuator goes all the way to the right ( with motor hot ) the air gets very cold, toward the end of display flash the actuator moves back to the right and air warms back up, that means the gear and actuator are intact, I am just using the screwdriver to move it another quarter inch to get full heat. Any idea on how to get the display to quit the learn process on startup? What if I disconnect the battery again and start all over and force that actuator rod all the way to the right each time after it'* gone all the way to the left and back to the right? I swear this is the most screwed up design or I am not understanding what it'* trying to do!
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Old 01-03-2010, 11:50 PM   #13
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your idea about disconnecting the battery again just may work.

The average time it takes the blinking display to stop is something 50 cycles of the ignition...
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Old 01-04-2010, 03:48 PM   #14
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I was searching for the old trailnuts article. I don't know why, but I found it at trialnuts.com now.

http://trialsnuts.com/ecc.pdf
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Old 02-15-2010, 03:53 PM   #15
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Hi Joe,

Go to my post and scroll down till you see "FIXED CLIMATE CONTROL AND FLASHING DISPLAY" and see if it works for you, it did for me. https://www.gmforum.com/1992-1999-91/climate-control-flashing-display-286478/
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Old 02-15-2010, 06:26 PM   #16
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Quote:
Originally Posted by Scorpion44 View Post
Hi Joe,

Go to my post and scroll down till you see "FIXED CLIMATE CONTROL AND FLASHING DISPLAY" and see if it works for you, it did for me. https://www.gmforum.com/showthread.php?t=286478
Thanks for the support!

Good Post.
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Old 02-20-2010, 06:16 AM   #17
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I tried this several differnt ways, OAT disconnected, start car with ECC on ( the display starts flashing immediately), run 5 minutes, turn off and reconnect OAT, start car and same ole flashing after minute after start, turn off, restart, same ole same ole.. Tried disconnecting OAT, ECC off and run for 5 minutes, once again the display starts flashing even though the ECC is off. Turned off and reconnected OAT and still same symptoms after about a minute. Flashing display. I am wondering if I should disconnect the battery and try and reset the whole system and start from scratch and try this trick. Has it worked for anyone else? Thanks for your input.
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Old 02-26-2010, 03:22 AM   #18
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Good stuff guys!... I just bought this car and I'm suspecting the dealership that took it in on trade disconnected the battery because it has been flashing the outside temp every time I've started the car since. My inside temperature has always been marginally warm (with one exception when it actually got hot) but after reading all through this post, and another by Scorpion44, I think I can fix this problem. In fact, this is the problem that allowed me to get the car for so cheap so I hope this is the fix. Will post back here once I've had time to work on it. (I commute 3 hours to work so it gets MIGHTY cold!!)
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Old 02-26-2010, 03:57 AM   #19
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One more quick question. I looked online at RockAuto.com for the actuator and found two. Which one is correct: Part # 1571835 (w/ arm) or Part # 1571923 (w/o arm)?
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Old 02-26-2010, 06:28 AM   #20
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I am looking forward to seeing what you come up with, my car ECC display is still flashing!
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