What is code H36 ?
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Joined: Aug 2001
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From: Ft.Myers Fl.
What is code H36 ?
95 LT1 when I parked it a couple of weeks ago in the garage it ran great. Attempted to start it today and I had to keep cranking. Finally it statred, the "service soon" light came on. I drove it and it runs fine but when I shut it down and try to start it back up, it takes quite a bit of cranking before it will start. The only code that it is showing is H36, when I use the "paperclip" in the ADL trick!. I don't know if this has anything to do with it but at the same time my AC compressor will not kick on. The fans work but no cold air. I checked the appropriate fuses and all are good The car has 10,000 miles on it. By the way I replaced the Opti Spark approx. 1,000 miles ago. I don't understand, the car ran fantastic when I parked it a few weeks ago!! Any help would be appreciated, Thanks, Mark
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
sadly, it could. I would like to hear if my assessment is correct... but I would also clear the code and see if you get a C36... H=history, C=current.
I am not sure if 1995 uses OBDI codes or OBDII codes... that's what I want to see confirmed.
However, GM having a bad part? never happens...
I am not sure if 1995 uses OBDI codes or OBDII codes... that's what I want to see confirmed.
However, GM having a bad part? never happens...
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Joined: Aug 2001
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From: Ft.Myers Fl.
I keep attempting to clear by way of disc. the battery for a minute, than I get the usual c12 followed by a series of --- , than "H"36. This is the only code. Once I do get it started, why than does it run great, until I shut it down and attempt to restart? Minus the AC not working. Would this problem be a reflect upon my AC comp. not turning. I did all the work myself, I was pretty proud to have done it, now this. I hope it is not The OPTI again. I purchased a genuine GM OPTI. I even installed a Mezire electric H20 pump and front seal while I was at it. Please don't tell me I have to do this all over again. It has only been a few months ago! If it is not the Opti, what else????????? I always felt good when I could loan some info. and help to a Forum Member. It seems like it goes both ways! Thanks for your concern 
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
you do have the OBDII connector, but the computer is still OBDI. OBDII didn't start until 1996...
With that in mind, I don't know when the codes switched. I do have that documentation at home, tho...
With that in mind, I don't know when the codes switched. I do have that documentation at home, tho...
1st Gear
Joined: Feb 2018
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Jerry Goodale
95 LT1 when I parked it a couple of weeks ago in the garage it ran great. Attempted to start it today and I had to keep cranking. Finally it statred, the "service soon" light came on. I drove it and it runs fine but when I shut it down and try to start it back up, it takes quite a bit of cranking before it will start. The only code that it is showing is H36, when I use the "paperclip" in the ADL trick!. I don't know if this has anything to do with it but at the same time my AC compressor will not kick on. The fans work but no cold air. I checked the appropriate fuses and all are good The car has 10,000 miles on it. By the way I replaced the Opti Spark approx. 1,000 miles ago. I don't understand, the car ran fantastic when I parked it a few weeks ago!! Any help would be appreciated, Thanks, Mark
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1st Gear
Joined: May 2023
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95 LT1 when I parked it a couple of weeks ago in the garage it ran great. Attempted to start it today and I had to keep cranking. Finally it statred, the "service soon" light came on. I drove it and it runs fine but when I shut it down and try to start it back up, it takes quite a bit of cranking before it will start. The only code that it is showing is H36, when I use the "paperclip" in the ADL trick!. I don't know if this has anything to do with it but at the same time my AC compressor will not kick on. The fans work but no cold air. I checked the appropriate fuses and all are good The car has 10,000 miles on it. By the way I replaced the Opti Spark approx. 1,000 miles ago. I don't understand, the car ran fantastic when I parked it a few weeks ago!! Any help would be appreciated, Thanks, Mark
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Joined: Jul 2005
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From: Parrish FL
St. Jude Donor '06 thru '26
Blizz, the OP, hasn’t been active on the Forum for over twelve years. You may have better luck finding a solution to your problem by starting a new thread.
