Hummer H3 2008 Intermmitent Flashing immo light

[leandroks]

Hi there i ve got a hummer h3 wich sometimes the immo light flashes on dashboard and car wont start.
There is no transponder, chip or resistor on the key, it is a weird immo system.
I disassembled the steering lock and found nothing wich could make part of immo system.
Could anyone shed any light on it?:??

Thanks a in advance..

BR

Leo

[jattal786]

try clear dtc code and check car start then pcm bad need to change pcm

[ray-ray]

There a magnet in the barrel which get pass by 3 wires. If it see the magnet car will start, if the security light comes on while drive your pcm is going out.

[leandroks]

There a magnet in the barrel which get pass by 3 wires. If it see the magnet car will start, if the security light comes on while drive your pcm is going out.
i ve looked all around but no wires on ignition lock is it on indicator stalks?: Or on back of ignition barrel???

[leandroks]

try clear dtc code and check car start then pcm bad need to change pcm
It happens a few times on the week..

[ray-ray]

Do you see the magnet press in with that white plastic.

[leandroks]

368010

i think it is a different model there is no plastic cover on the ignition barrel.

[leandroks]

It is a weird immo system there is no resistor on ignition lock no transponder on the key nothing, i can figure out how it works.

[ray-ray]

That look like a Saturn ignition there a resistor inside the housing. I'll try to look for picture to share

[leandroks]

tHAT WOULD BE NICE M8, THANKS A LOT

[aketokediag]

Hummer H3 has an inbuilt security, you can not see transponder in the key. I Think i can help you out, why cant you reprogram the vehicle? Did you know how you can get this done?

[leandroks]

nO BUT I BE MORE THAN HAPPY IF U TEACH ME. tHANKS...

[aketokediag]

Firstly scan and report with DTC on the vehicle right here. If i help you it cost you nothing to push THANKS button, PM me will help you out.
Regards

[leandroks]

It works ok mostly, just sometimes it blinks and car wont statrt,

[clusters]

Post a pic of the key both sides, and the first part of the VIN. US market trucks had a transponder in the key and the key looks just like a non-transponder key but are marked with different symbols.

If it's an export model, there should be a magnet in the lock cylinder and a sensor with a resistor in the lock housing. I haven't seen one yet, so I can't supply more info past that. I do know they had corrosion problems where the sensor plugs in and some contact cleaner and a little silicone di-electric grease helps.

[dmp]

Canadian models had a chip in the key, US models had a "passlock" cylinder with a resistor in the ignition switch but a non-transponder key. The teach in procedure for those ignition switches is almost the same from a transponder key when the lock is being replaced.

[clusters]

Canadian models had a chip in the key, US models had a "passlock" cylinder with a resistor in the ignition switch but a non-transponder key. The teach in procedure for those ignition switches is almost the same from a transponder key when the lock is being replaced.

You're right, I had it backwards. :banghead: Long night here.

Not just Canadian models, all exports had the transponder.

[leandroks]

368302
Definitely, this one is a non transponder key, i openned the key and read it on transponder reader. So for sure no transponder key, and on the ignition lock i couldnt find any signs of antenna or resistors..

[aketokediag]

Please check the FCM of the vehicle, and report

Sent from my Infinix X506 using Tapatalk

[simon77]

If the car has no wires on the barrel at all then the immobiliser must work with the remote or doorlocks.the last right hand drive h3 I done was 2008 with passlock three wires on the barrel.i installed remote start and by passed passlock with two relays and some resistors.
RegardsI

[vanos batam]

It works ok mostly, just sometimes it blinks and car wont statrt,

your problem solved??
let me know please!!

[leandroks]

your problem solved??
let me know please!!
It has some wet signs on bcm, cleanned it up, and it is ok so far, but i am not convinced, i am waiting for customer to get me the feedback.