Question about 2006 Hummer H3

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I have 2007 H3 if the car is not used for 2 days the battery goes flat I disconnected the Body Module and then left the car for 2days then the battery is okay no run down,is it the BCM or something else. Regards Cyrus.

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The body module controls many things it could be module or something that module controls, the best way to find the draw is to do what you did with the module, remove fuses from each system until you can pinpoint draw, if you had a battery draw tester you could watch the meter as you dissconnect each fuse until you see the draw go away.

Posted on Aug 20, 2010

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U cud hav a drain somewhere in the harness-listen for noises n look for lites on when vehicle is off-problems in wiring take a good detective--hav car scanned

Posted on Aug 20, 2010

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1 Answer

06 H3 Hummer right turn signal goes on by itself can't turn off


Turn Signal Lamps
The FRT/TRN/HAZ/CRTSY/MIRR and REAR/TRN/HAZ fuses in the underhood fuse block supplies battery positive voltage to the body control module (BCM). When the turn signal switch is placed in either the left or right position, a signal is sent to the BCM to illuminate the desired turn signal lamps. The BCM has an internal flasher that sends an ON-OFF voltage signal to either the left or right turn signals and their instrument panel cluster (IPC) indicator. When the hazard switch is pressed, a separate ground signal is sent to the BCM to activate and flash all turn signal lamps including both IPC turn indicators. The front and rear turn signals are grounded at G105, G350 and G340. The sound for the turn signal indicators is produced by the IPC.

DTC B0525 Left Turn Signal Circuit
• DTC B0527 Right Turn Signal Circuit Low
• DTC B0528 Right Turn Signal Circuit High
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DTC B0530 Right Turn Signal Circuit
• DTC B0532 Left Turn Signal Circuit Low
• DTC B0533 Left Turn Signal Circuit High
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Could be a switch problem , short to ground on the signal circuit to the BCM , BCM seeing a input that shouldn't be there etc....
I would have it checked for DTC'S diagnostic trouble codes .

Jun 10, 2017 | 2006 Hummer H3

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2007 h3 hummer right rear brake light wont go off


Are you sure that is the brake light staying on and not the tail light

Jun 21, 2016 | Hummer Cars & Trucks

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What tools are needed to replace BCM?


Important: Perform new BCM setup when you replace Body Control Module (BCM). Refer to Body Control Module (BCM) Programming/RPO Configuration .
Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gauges and Console.
Disconnect the BCM electrical connectors.
Push the BCM up and move the bottom of the BCM away from and out of the mounting bracket slot in order to remove the BCM.
During Body Control Module (BCM) related service, the procedures below are designated to set-up the BCM correctly. Before you start, read these procedures carefully and completely.

Setup New Body Control Module (BCM)
Tools Required
Scan Tool (Tech 2) GM factory scan tool !
Important:
• Read this procedure carefully and completely.
• The BCM will not function properly if the Setup New BCM procedure is not performed.
• Perform the Theft Deterrent Re-learn procedure after successfully finishing the Setup New BCM procedure. If the Theft Deterrent Re-learn procedure is not performed after a BCM replacement, the following conditions may occur:
- The vehicle will not be protected against theft by the PASSLOCK system.
- The engine will not crank nor start. Your best bet is to take your vehicle to a dealer or a ASE certified repair shop who has proper tools .

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What would make the battery go dead sitting 2 days without being cranked


Connected ? Could be a light or fault on alternator draining.if it loses charge disconnected battery is finished

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1 Answer

What is draining the battery of my H3 Hummer?


it may not be a drain on the battery the alternator may not be charging at the correct rate , this will not always bring on the red charge light if it is just below the range , do you drive at night , use the A/C ,etc things like this can drain the battery whilst driving and not getting re-charged by the alternator.If the charge rate is ok then disconnect the earth cable and put a test light between the earth terminal on the battery and the earth cable , if it lights up then there is a drain , check any interior light that may be on all the time , glove box or under hood are usually overlooked , if no lights found then remove the fuses one by one until the light goes out , that will tell you what circuit the drain is from , then you know where to investigate , loose connection , worn wire etc keep me posted if you wish

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1 Answer

Module overheating and cuts engine


start going through all of the body and engine grounds. look for any that are corroded or loose. Had a similar issue on a domestic vehicle. It had been at the body shop post my wife wrecking the car. The body shop left half the grounds off or loose. The thing was going nuts. Spent two days looking in, under, and around the enngine bay and found a body ground off on the lower firewall. The car went right back to normal as soon as I re-attached that one body ground.

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1 Answer

2007 h3 radio not working and display time and "phone". if battery is disconnected it comes back on then goes right back after turned off and started back up.


1st mistake: you didn't get an H1 lol
2: Most modern cars have an anti-theft device installed in the radio. That means if the battery becomes disconnected for ANY reason your radio won't work without a special code being entered. Your local Hummer dealership should be able to provide you with a code. The code is NOT the same for every vehicle.

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2 Answers

Locating the voltage regulator located on 2007 Hummer H3?


I don't have a shop manual for a Hummer.
But GM trucks built in 2007 use something other than the alternator to control voltage. Sometimes its called a generator control module and sometimes it is inside the body computer or the ECM.
You may need to check with someone who specializes in Hummers for the answer.

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1 Answer

My hummer when I turn off the vehicle the p light is lite in a sec. or two it will move over to the 3rd gear mark and the radio comes on and the dome light also the doors unlock this keeps running my...


The drains are plugged or the drain tube is disconnected on the passengers side allowing water to run down the passenger side pillar or out the disconnected tube and the bcm is there in behind kick panel. Body control module. Try drying it out with forced air and maybe even heat. If no luck after that try hooking battery cable for a bit to reset as well. If nothing try the dealer and mentioned. The bcm and may be the problem. I have an 06 h3 and have had troubles with the sunroof drains before. I joined a drum and learned the cure.
1_14_2013_3_50_18_pm.jpg

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4 Answers

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Hey I have the same problem, but only when it rains, it comes from the sunroof then leaks into the carpet.

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