Which wire is the ecm ground wire??

[2QWIK4U]

Still chasing code 42 and read an old post that said to ground Trans + to ecm ground to correct.This took care of their problem so I was gonna give it a shot.

 

[CGASTON]

Take a look at this PIC and the link. There is a better pinout out there but cant find it or remember where it is at this time.

 

[Eric Stage I]

Pins A12, D1, and D10, are grounds at the ECM.

 

[OvaBoost]

Here is a link to Turbo1dr's site: http://www.turbomalibu.com/misc/1987TurboRegalWiringDiagram.gif

Pretty good pic there that is color coded.

HTH

 

[87-WE2]

Here is a link to Turbo1dr's site: http://www.turbomalibu.com/misc/1987TurboRegalWiringDiagram.gif

Pretty good pic there that is color coded.

HTH

The link above or the file itself would be a GREAT idea for a sticky!!!

ECM wiring diagram

 

[TurboBuRick]

Here is the diagnostic tree. It's pretty cut and dry. http://www.vortexbuicks-etc.com/code_42.htm

RL

 

[2QWIK4U]

If I was gonna ground the Trans Plus to the ecm ground,which wire on the trans plus would I tap into? I now know which wires on the ecm is ground but not the one on trans plus. Ive never installed one so I 'm not that familiar with it.