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1998 trans am pcm diagram help!!!

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Old Feb 14, 2011 | 08:05 PM
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Default 1998 trans am pcm diagram help!!!

Hi can anybody help me on where can i find the pcm wiring diagram for my 1998 trans am, because im having trouble with a code (P0785) so i can fix my car. Any help would be greatly appreciated!!!
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Old Feb 14, 2011 | 08:39 PM
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The code is for the 3-2 shift solenoid. The solenoid resistance spec is 20-32 ohms. I attached a pic to help locate it.
Attached Thumbnails 1998 trans am pcm diagram help!!!-transdiag.jpg  
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Old Feb 14, 2011 | 08:59 PM
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thanks for your quick answer, as of right now i checked the solenoid and it is fine, i need to get the pcm diagram so i can check all the wires to see if on is cut or something wrong with them.
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Old Feb 14, 2011 | 09:01 PM
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[QUOTE=slp1300;14505244]thanks for your quick answer, as of right now i checked the solenoid and it is fine, i need to get the pcm diagram so i can check all the wires to see if on is cut or something wrong with them.
do you know were can i get the pcm wires diagram??
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Old Feb 14, 2011 | 10:04 PM
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.....
Attached Thumbnails 1998 trans am pcm diagram help!!!-p0785.jpg   1998 trans am pcm diagram help!!!-a4-connector.jpg  
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Old Feb 17, 2011 | 01:29 PM
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Everything in the trans seems to be ok i need to check all the wiring from the pcm to the trans, can anybody help me get the pcm wiring harness diagram so i can check the wires? thanks
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Old Feb 17, 2011 | 05:46 PM
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If the only code is the one listed above then there is only 1 wire to worry about. The power for the solenoid is the same wire for all so if one works then power is good. The control wire from pin 34 at the pcm is all you would have to check.
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Old Feb 17, 2011 | 09:32 PM
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These are the 98 Transam PCM wiring diagrams:
Attached Files
File Type: pdf
Engine Controls 1.pdf (63.6 KB, 962 views)
File Type: pdf
Engine Controls 2.pdf (54.0 KB, 764 views)
File Type: pdf
Engine Controls 3.pdf (47.9 KB, 647 views)
File Type: pdf
Engine Controls 4.pdf (60.9 KB, 652 views)
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Thanks for the PCM diagram!!
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