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PostPosted: Sat Aug 17, 2019 11:39 pm 
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Year and Trim: 1966 Bonneville
I'm trying to read the codes on a 1995 Bonneville that's running rough. I read that you can do this by jumping the 4 and 6 pins on the OBD connector on 1995 GM cars with OBD 1.5 but there isn't a 6 pin on the connector, what pins do I jump to have it flash the codes? Here is a picture of the OBD connector.

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PostPosted: Sun Aug 18, 2019 12:05 am 
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Joined: Tue May 27, 2008 8:53 am
Posts: 5385
Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom
Codes cannot be flashed out of any 3800s past 1993. They must be scanned.

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~Randall~
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1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place


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PostPosted: Sun Aug 18, 2019 1:44 am 
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Year and Trim: 1966 Bonneville
Ok how can I scan for the codes since its not OBD 2?


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PostPosted: Sun Aug 18, 2019 12:06 pm 
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Joined: Tue May 27, 2008 8:53 am
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Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom
With a compatible OBD 1 scanner.

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~Randall~
ImageImage

1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place


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PostPosted: Mon Aug 26, 2019 9:23 pm 
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Year and Trim: 1995
Question along this same subject. Are the plug ins for OBD 1 and 2 very similar? I also need to scan codes on a 95 but the Chiltons book says that 1995 has an OBD 2. Every parts shop I have taken it to for testing have not been able to get a reading and I am 'wasting' money taking shots in the dark.


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PostPosted: Mon Aug 26, 2019 9:40 pm 
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Year and Trim: 1995
Twystedhemp2 wrote:
Question along this same subject. Are the plug ins for OBD 1 and 2 very similar? I also need to scan codes on a 95 but the Chiltons book says that 1995 has an OBD 2. Every parts shop I have taken it to for testing have not been able to get a reading and I am 'wasting' money taking shots in the dark.


Never mind. I found an older thread about this and 95's are just weird, they have OBD 1.5 The parts shops kept telling me I have loose wires under there, I almost decided to tear apart the compartment and look. Glad I checked here first! :)


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