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Tom, ASE Certified Technician
Category: Car
Satisfied Customers: 25950
Experience:  ASE Certified Master Technician
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Hummer H2: Air Suspension out of work

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Air Suspension out of work
Hi I’m Tom and I’m here to assist you with your issue today. Before I get you a fully researched answer, I have to ask you a couple preliminary questions.Have the height sensors been checked?
Customer: replied 3 years ago.

Ride hight status:extendet ,height sensor supply st on ,trim height lerned no

, height sensor current 18ma RH -sensor 0,98v LH-sensor 1,27v

the car stand bad in my garage,how the sensore indicate


Ok sounds like the height sensor has failed .Check each sensor for corrosion and damage and Im sure you will find your issue .Let me know what you find.
Customer: replied 3 years ago.

LH /RH sensors works from aproc.0,9-4,4 volts in same direction and hight

Ok thats the voltage reading off all 4 see sensors?
Customer: replied 3 years ago.

the car has only rear air suspension and we see only rear LH/RH sensors.

from tech2 too only information from rear LH/RH

OK so the rear is sagging correct?
Customer: replied 3 years ago.

Yes,RH a little more than LH .How the voltage without lift indicates

RH 0,98 LH 1,27 v

Sounds like the RH sensor very well can be the issue these are known to cause these issues .I would start here if the control unit as well pumps and bags are not damaged .Remember that I'm here if you need any further assistance just let me know it will be for no further charge. Hoped this helped.Please rate excellent service so I can get Credit for my help thanks. Bonuses greatly appreciated.
Tom and 3 other Car Specialists are ready to help you
Customer: replied 3 years ago.

i think no RH sensor ,the car stands RH lower. thats indicates too 0.98 volts,and you say "if the control unit as well pumps" . Only pump without relay and direct wire in relay-connector from 30 to 87. I think this is it. I will check all 2 parts and tell you Thanks for work and information with you .Sorry again for my no good english. May be parts-order any days in Germany

Greatings Thomas

Customer: replied 3 years ago.

I have changed the air suspensin module and the RH -Sensor

Dosent work!!

What can i do??

Customer: replied 3 years ago.
Relist: Incomplete answer.
Did you recalibrate the system after the repair with the scanner?
Customer: replied 3 years ago.

Yes,i have,132mm(5,2") after replase the rear right hight sensor and module i can activate with Tech2 the compressor in inflate range.

Trim Height learned:yes

Customer: replied 3 years ago.
Relist: Answer came too late.