Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 

Thread: GM ALDL link
          
   
   

Reply To Thread
Results 1 to 3 of 3
  1. #1
    AzDon's Avatar
    AzDon is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2005
    Location
    Lake Havasu,
    Car Year, Make, Model: 68 Suburban, 69 Chevy Van, 91 Olds Wagon
    Posts
    80

    GM ALDL link

     



    I was reading an excellent writeup regarding GM EFI troubleshooting at Troubleshooting pg. A

    This page shows a pinout diagram with explanations of how to use each pin for diagnostics...
    I was all ready to start doin some troubleshooting on my 91 caprice and.....
    THE PINOUTS DONT MATCH THE DIAGRAM!!
    I looked at two other ALDL-era chevies I have and NEITHER ONE of them match the diagram either!!
    Does anybody have a link or know where to find out about the different pinout layouts? I know pin A is ground and jumpering B will result in a flash test, but I want to do some of the other tests, as well!
    Thanks!

  2. #2
    cffisher's Avatar
    cffisher is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2006
    Location
    Constantine
    Car Year, Make, Model: 57 chevy 2 dr wagon
    Posts
    9,476

    I think you'll find that they were changed in99 or 2k.I don't have the previous ones
    Charlie
    Lovin' what I do and doing what I love
    Some guys can fix broken NO ONE can fix STUPID
    W8AMR
    http://fishertrains94.webs.com/
    Christian in training

  3. #3
    AzDon's Avatar
    AzDon is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2005
    Location
    Lake Havasu,
    Car Year, Make, Model: 68 Suburban, 69 Chevy Van, 91 Olds Wagon
    Posts
    80

    Yeah, OBD2 is a different plug beginning in 1995 and is a completely different animal.... On the plus side OBD2 has a universally standardized plug and diagnostics platform. With an OBD2 cable and laptop software costing less than $80, you can plug in your laptop and look at all the controls while running the car. Re-flashing stuff is a little more involved and expensive.....
    My default preference is carburetors and simple, self-contained distributors which steers me towards stuff that is now 30 years old!
    I'm struggling to catch up with beginning of the modern era, which is now 17-30 years old. Troubleshooting this stuff is not much fun!

Reply To Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink