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PostPosted: Mon Mar 04, 2019 8:31 pm 
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Year and Trim: 2000 Bonneville SSEI
2002 Bonneville SSEI. After working on the coolant system we turned the heat on high to burp the car. Once we finished with the coolant system we switched batteries out between our 2000 and 2002 SSEI's. When I started the 2002 the heat came on full blast and I immediately reached over and turned it off. The very next time I got in the car the HVAC would only blow hot on the driver side and cold on the passenger side. It would still change modes between the floor, dash, and defrost. It was this way for 2 months until we tried to reset it. Now it will no longer change modes. Still hot on drivers side and cold on the passenger side. We tried several different methods but never could actually get it into the reset mode where it starts at 74 degrees and runs all of the test functions. I was hoping someone would know the HVAC reset instructions that are specifically for the 2002 Bonneville SSEI.


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PostPosted: Tue Mar 05, 2019 10:47 am 
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Tech2 required for an airmix actuator re-calibration.

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PostPosted: Tue Mar 05, 2019 3:14 pm 
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Location: Alberta, Canada
Year and Trim: 2004 GXP, 2008 STS, 2008 DTS
These can be recalibrated using the following procedure:

Calibration Procedure without a Scan Tool
1. Turn OFF the ignition.
2. Remove the battery positive voltage circuit fuse of the Instrument Panel Control Module.

Important: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.

3. Wait 60 seconds.
4. Install the fuse.

Once this is done, the Instrument Panel Integration Module will reset and automatically perform an actuator recalibration. I've always used a Tech2 myself, but this will also get the job done.

*** The fuse you need to pull is in the rear fuse block and labelled "HVAC BATT" and will be rated at 10A. DO NOT confuse this with the other fuse labelled only "HVAC" or the procedure will not work.

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Last edited by ddalder on Thu Mar 07, 2019 4:25 am, edited 1 time in total.

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PostPosted: Wed Mar 06, 2019 4:20 pm 
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Joined: Sun Aug 22, 2010 11:11 pm
Posts: 1696
Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
yes, when my battery died, it reset the blend doors and now my hvac works well

good luck

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2000 SSEi
past rides:
1996 SSEi
1992 GTP
1987 Grand Am


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PostPosted: Mon May 27, 2019 1:07 pm 
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Joined: Thu Jun 14, 2018 10:05 pm
Posts: 96
Year and Trim: 2000 se
ddalder wrote:
These can be recalibrated using the following procedure:

Calibration Procedure without a Scan Tool
1. Turn OFF the ignition.
2. Remove the battery positive voltage circuit fuse of the Instrument Panel Control Module.

Important: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.

3. Wait 60 seconds.
4. Install the fuse.

Once this is done, the Instrument Panel Integration Module will reset and automatically perform an actuator recalibration. I've always used a Tech2 myself, but this will also get the job done.

*** The fuse you need to pull is in the rear fuse block and labelled "HVAC BATT" and will be rated at 10A. DO NOT confuse this with the other fuse labelled only "HVAC" or the procedure will not work.


Will this also work in my 2000? Mine has been like this since I bought it from previous owner, blows hot on drivers side n cold on passenger side on ac, I figured a blend door motor issue, but maybe just needs a reset?


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PostPosted: Mon May 27, 2019 11:34 pm 
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Posts like a Northstar
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Joined: Sun Aug 22, 2010 11:11 pm
Posts: 1696
Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
give it a try

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poverty forces one to do unorthodox things

2000 SSEi
past rides:
1996 SSEi
1992 GTP
1987 Grand Am


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