Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

BCM Issues

Thread Tools
 
Search this Thread
 
  #11  
Old 04-24-2021, 08:02 AM
Thatsgr8's Avatar
Senior Member
Thread Starter
Join Date: Dec 2020
Location: Avondale Arizona
Posts: 109
Default

Originally Posted by hummerz
Again, did you read the listing?
"it may need crankshaft variation relearn (code p0315)."

You have been chasing issues since the aftermarket stereo installed. Did you remove the stereo and recheck? Maybe too late? Btw, the seller has a great reputation, and has sold thousands of modules, also from the great state of O-H-I-O. Just make sure, first to verify service number on your pcm, then during purchase, before you checkout, to add a message to seller which includes your vin.
"This module needs 30 minute security key relearn"

After started/running, if you get a CEL with code p0315, you will need to perform crankshaft variation relearn.

Baby step #1: get it running!

https://www.youtube.com/watch?v=S4hb_yeMYpY
Quick question. Does it matter the orientation of a relay in the fuse box. Can they be installed wrong? I understand the basic functions. I have been reading other posts on how to check if they are good or bad by applying +/- to it and listening for the click then reading across the other terminals. Maybe mine are installed wrong. I did remove the chime box and stereo last night, POS. Still have not ordered the PCM from eBay yet. Just researching every possibility. TIA.
 

Last edited by Thatsgr8; 04-24-2021 at 03:05 PM.
  #12  
Old 04-24-2021, 09:49 AM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 7,939
Default

Not sure what relays you have, the oem 58100201 & 58100202 are 5 pin, with 5 slots in the fuse box, therefore can't be reversed.



 

Last edited by hummerz; 04-24-2021 at 09:51 AM.
  #13  
Old 04-24-2021, 10:01 AM
Thatsgr8's Avatar
Senior Member
Thread Starter
Join Date: Dec 2020
Location: Avondale Arizona
Posts: 109
Default


This is what is in mine. I only have one relay with 5 legs.
 
  #14  
Old 04-24-2021, 10:12 AM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 7,939
Default

Same and mounted correct.
85 & 86 are the terminals connected to the relay coil (the relay control circuit) and 87 & 30 are the terminals connected to the switch contacts (the relay load circuit).





 
  #15  
Old 04-24-2021, 11:23 AM
Thatsgr8's Avatar
Senior Member
Thread Starter
Join Date: Dec 2020
Location: Avondale Arizona
Posts: 109
Default

Originally Posted by hummerz
Same and mounted correct.
85 & 86 are the terminals connected to the relay coil (the relay control circuit) and 87 & 30 are the terminals connected to the switch contacts (the relay load circuit).




It does not fix my current problem without replacing all of them. I just need to know which direction they are suppose to be.
 
  #16  
Old 04-24-2021, 11:40 AM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 7,939
Default

Originally Posted by Thatsgr8
It does not fix my current problem without replacing all of them. I just need to know which direction they are suppose to be.
I stated yours are mounted correct. Like reading a book, the mega fuse is at the right lower corner, and all relays are mounted with the name on the top and part number on the bottom, 86/85 left side and 87/30 right side.


 
  #17  
Old 04-24-2021, 12:11 PM
Thatsgr8's Avatar
Senior Member
Thread Starter
Join Date: Dec 2020
Location: Avondale Arizona
Posts: 109
Default

Originally Posted by hummerz
I stated yours are mounted correct. Like reading a book, the mega fuse is at the right lower corner, and all relays are mounted with the name on the top and part number on the bottom, 86/85 left side and 87/30 right side.

If they're all mounted correctly then the issue is either the BCM or the PCM. I still get no start. I guess I go for the cheaper option of the PCM first. I used to hear the fuel pump spin up before I messed with the fuse block 2 weeks ago.
 

Last edited by Thatsgr8; 04-24-2021 at 12:14 PM.
  #18  
Old 04-24-2021, 01:13 PM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 7,939
Default

Originally Posted by Thatsgr8
If they're all mounted correctly then the issue is either the BCM or the PCM. I still get no start. I guess I go for the cheaper option of the PCM first. I used to hear the fuel pump spin up before I messed with the fuse block 2 weeks ago.
You posted that it shuts off after 10 seconds at the beginning of this thread, now it doesn't startup at all? Does it crank? Your posts are confusing?
 
  #19  
Old 04-24-2021, 02:52 PM
Thatsgr8's Avatar
Senior Member
Thread Starter
Join Date: Dec 2020
Location: Avondale Arizona
Posts: 109
Default

Originally Posted by hummerz
You posted that it shuts off after 10 seconds at the beginning of this thread, now it doesn't startup at all? Does it crank? Your posts are confusing?
What I posted is "No flashing pass code lock, shuts off after about 10 seconds."
 
  #20  
Old 04-24-2021, 03:03 PM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 7,939
Default

Does it crank when you turn the ignition to the start position?
 


Quick Reply: BCM Issues



All times are GMT -5. The time now is 03:29 PM.