@HellHoof
Is yours an 08/09?

B0083 carries a descriptors i.e. additional "byte" of information as follows:-

• DTC B0083 00: Electronic Front End Sensor 1 No Additional Information (Left)
• DTC B0083 0F: Electronic Front End Sensor 1 Erratic (Left)
• DTC B0083 39: Electronic Front End Sensor 1 Internal Electronic Failure (Left)
• DTC B0083 3A: Electronic Front End Sensor 1 Incorrect Component Installed (Left)

How this extra byte is obtained form the scan tool unclear, however further info is below:-



Conditions for Running the DTC
Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC
Any of the following conditions exist for 2.5 seconds:

B0083 00, B0084 00, B0085 00, B0086 00, B0087 00, B0088 00
• The front end sensor has been shorted to voltage, open, or shorted to ground.
• The front end sensor current has been above 23 mA for longer than 5 milliseconds.
• The SDM has not received a message from the front end sensor for more than 375 milliseconds.

B0083 0F, B0084 0F, B0085 0F, B0086 0F, B0087 0F, B0088 0F
The SDM has received erratic messages from the front end sensor.

B0083 39, B0084 39, B0085 39, B0086 39, B0087 39, B0088 39
• The SDM has received a Not Ok (NOK) message from the front end sensor.
• The SDM has not received a message.
• The SDM has received invalid serial data from the front end sensor.

B0083 3A, B0084 3A, B0085 3A, B0086 3A, B0087 3A, B0088 3A
• The SDM has received an ID message from the front end sensor, which does not match the ID stored in the SDM memory.
• The SDM has reset the front end sensor twice without detecting the correct ID message.

Hope the above info helps, this YT Video may also be of help even though its for an 05

 

Yes, 2008. That table is great! My extra code is 00, and that does show in your table. I'm assuming it's the Symptom showing on the right side. (ignore that it says there's another code - that was because I was messing around in the programming screen and restarting it cleared that second code).



The link to the video doesn't work however - its to a YouTube studio page.

I haven't messed with the sensors because it's raining. But due to the rain, I discovered my front wipers don't work. The washer pump and rear wiper works, but the front does not. The Tech2 shows the proper position of the switch on the turn signal stalk, and shows it commanding the appropriate relays. I can hear those relays clicking too.

 

@HellHoof
Apologies for the incorrect link, please try again it should now work👍

Re Wipers
The recent thread below on 08/09 wipers may be of help.
The 03-07's contained internal electronics, yours are controlled by the BCM and relays. It could be Fuse 30 WPR (20A) , PCB relay or possible the BCM, perhaps this is related to the smoke?
Wipers
Fuses

 

Incoming: big update of nothing good.

I swapped the sensors left to right. The code is still the same, meaning the sensor itself is OK and the issue lies within the airbag module, or more likely the wiring.

I opened up under the dash and removed the BCM and the transfer case control module. Both looked ok - so I opened them up and pulled the PCBs out. The BCM only had 2 capacitors, both looked healthy. The tcm did not have any capacitors (and I don't have any issues with it).


I still don't know what the hissing sound was - I guess it could have been the airbag module but that is under the seat and not where the smoke and smell was coming from.


So given my list of issues:

1. No power to wipers. The BCM reports it is powering the relays, and I can hear 1 under the hood activating, but not a second.
2. Fault code to left front airbag sensor, despite swapping sensors.
3. Hood open message constant

I'm guessing my next step is to try and find the wires for those individual components, and try to do a continuity test against them from the BCM / airbag module, & the components. Unless anyone else has a better idea, to which I'm all ears!
Also - anyone have the wiring diagram for the 2008 BCM and airbag module so I can figure out which wire/plug is which?

 

Oh, the #30 fuse for wipers (25A) is good, btw.

Does anyone know how interchangeable the BCMs are between 2008 and 2009? I'm friends with a feller in my neighborhood who has a 2009. Wondering if I could simply swap them out to see which issues follow, but I suspect that may lead to even more issues than it would solve.

 

I know this is going to sound really stupid but you may want to try it. With electronics when the magic smoke is let out the affected device will have that definite smoke smell for some time. If your hissing came from the BCM I do believe you might still be able to smell the residual stink of burn electronics and at that point you know you need another BCM and can save the work of doing a swap with your friends 08.

As far as 08/09 are concerned other then the 09 being able to run E85 (and some fuel system mods) I would think they would be electrically compatibility. The only snag I see is the VIN in encoded into the BCM as well as all the option codes contained in the vehicle so you might get some interesting codes as features that are in the 08 might not be in you 09 and vice versus. The 08/09 had a major canbus upgrade over the previous years and there's a lot more going on and checks being made, the BCM gets pissed when it looks for something that is defined in the RPO codes table that it finds missing.

Hopefully when you make the swap your B0083 code can be cleared and stay gone then you will have your answer.

 

I have a B0103 front (sensor 2) performance code. AND I see that my cruise control does NOT work when lights are on but it does work when lights are off. Either way, lights on or off the air bag light is still on. Can someone tell me the info (like above) for that B0103 code? My scanner only shows that its a performance code nothing else. When I clear it, it just comes back. Thank you

 

I still have a feeling your going to find some wiring under the dash close to where you drilled that have been damaged and will need repair, on top of that you might find you have a damaged BCM, If I remember correctly, the front sensor wires to the air bag sensor module and then connects to the BCM.

Perhaps someone on the forum with access to the full H2 schematic can post up this circuit.

 

Logically you have two unrelated issues:

1. Front Right impact sensor, possibly and probably faulty.
2. Cruise control problem.

For 1 you may need a replacement sensor, I see you posted in another thread, try swapping the left and right sensors and see if the DTC changes to B0100 (Left) then you'll know.

For 2, the cruise control is sensitive to filament stop lamp current and voltage.

• Check both stop lamp filament bulbs are working and that no LED's have been fitted.
• Check Ground G401 ground to the tail light Rear Junction Block (Left Rear Frame Body Mount)

Best I can offer

 

In the HummerFixes videoat the 2:06 mark you can see the sensors connect to the Inflatable Restraint Module (SDM under the drivers seat) however this circuit is for a 2005, and 08 is likely to be similar, it seems to use the same Serial Comms to communicate with the BCM

Found this schematic:-


Sounds like you may have a broken the wiring to the front left sensor (B0083 00) circuit 36 & 38 above, or damaged the electronic circuit inside the SDM module, perhaps this is where the smoke originated?

An interesting snippet is you have side impact sensors, presumably inside the front doors.

Take care when working with the airbag system, keep the battery disconnected and allow time for the circuits to discharge.