Heya's,

I bought 2008 Hummer H2 recently and now experiencing some electrical problems:
-headlights won't turn on
-windshield wipers come on/off on their own
-hazard lights are always on

i was told it's more than likely a fault on the BCM, so ordered a new one. in the meantime i thought i'll mess around with it so looking for a BCM wiring manual/diagram if anyone has one? Cheers.

 

Did you find some diagram for bcm, did you solve the problem???

 

Still wondering if you ever solved your problem, if not you should be able to get the info from a gmc dealership. jmo!

 

Hello,

I desperately NEED 2008 H2 BCM pin outs, the previous owner made 3 wire merges which he removed but left the wiring cut off.
I bought a new BCM due to numerous failures caused by a faulty BCM such as:
> random headlight dimming at night
> remote start failures with no MIL lights or codes
> the theft alarm getting triggered shortly after leaving the H2 with zero remote button activation(s)
> random key fob communication failures
> random radio sound self-muting.
> random Bose amp failure, leading to a failure of the Bose amp. New Bose amp cannot be programmed after the new Bose amp R&R
> there are more issues, but these are the most repeatable & can be created/triggered for diagnosis (even though the local Cadillac/Hummer dealership cannot seem to do it).

I have been trying to find the correct information in these manuals that I own. If anyone knows what pages contain charts of pin out tables per color group connectors I will gladly pay for that assistance, just tell me what you need. Do NOT be shy I firmly believe in paying for the right knowledge.


I have this Volume 1 of 3 for the 2008 GM Service Manual

I have this Volume 2 of 3 for the 2008 GM Service Manual

I have this Volume 3 of 3 for the 2008 GM Service Manual

 

You dug up an nearly FOURTEEN YEAR OLD THREAD to tack on a question???????????????? WTF. Start a NEW THREAD with your brand NEW Question in the H2 Section. READ: Old Threads/'Necro-Bumping'