99 gtp abs light, trac light on and cruise wont work.
The code is showing b0550 "electronic control moduel malfunction". so I bought a used one and installed it, and nothing changed cleared the code and it comes back up with the same code. Checked my powers and grounds in the plug going to the moduel and everything is doing what it should.
Could of I got a bad moduel? or is it something else? do the pumps go bad on these?
Is there any gm techs or guys that know more about my problem that are willing to give me any advice?
Thanks for any help