Recent content by bacon612

In my deep research, I read that Bosch was partially responsible for actually designing the regulated voltage control system with Delco Remy. It inspired my decision to try a Bosch unit as they have the same case and 2 pin connector to the ECM for the RVC.

I replaced the OEM delco with a re-manufacturerd Bosch unit yesterday afternoon and it fixed my problem. Irony? I went through 3 'New' delco alternators that all did the same thing. 4, if you include my factory one that was likely failing after 120k miles. I'm just happy I've solved my problem.

Something I never did was to clean the mount points of the alternator which are effectively a big ground. Again, they 'looked' clean and I wedged 3 in and out of the housing since July but never took the time to clean the mount points and slather on some dielectric grease. I plan to do that...

Hey. Thanks for the reply. I did replace the alternator with an ACdelco 160 amp alternator from Summit Racing. It had the same stamping as the one that it replaced. My suburban has the (K5L) heavy-duty trailering package which i believe upped the 145 amp alternator to 160 amps.

Hey there. I just registered to these forums and found this thread hunting down an issue that seems to be very similar to yours. The video of the voltage is very similar to what I have going on. I see spikes as high as 15.7 or so and cringe. My truck is a 2014 z71 Suburban (GMT900 NNBS) 125k...