Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

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Old Jan 12, 2020 | 08:34 PM
  #21  
bureau13's Avatar
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Originally Posted by hummerz
I can only advise you on the steps I would take in your case(@180k miles, without knowing what oil you have been using?):
#1: Flush engine, refill with new mobil1 5w30 full synthetic & replace filter with AcDelco UPF61R
#2: Replace solenoid with ACDELCO 12615873
If code returns;
#3: Replace timing chain/sprockets.

GL
OK, well an oil change certainly doesn't hurt anything. Neither does getting the AC Delco solenoid. #3 sounds like a major effort, is it not actually that bad on this vehicle?


Bronxteck, I'm not sure what you meant by the "back half of the motor" comment. What is requiring dropping the engine and/or tranny? Whatever it is I will definitely try to avoid that...
 
Old Jan 12, 2020 | 09:34 PM
  #22  
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the other timing chain and the balance shafts
 
Old Jan 12, 2020 | 10:04 PM
  #23  
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Originally Posted by bronxteck
the other timing chain and the balance shafts
Ahh. I didn't realize that's where they were. I've only changed a timing belt, on another car, which was fairly involved but overall not that bad a job. But it was a much older vehicle.
 
Old Jan 13, 2020 | 12:44 PM
  #24  
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similar engine
 
Old Jan 26, 2020 | 03:32 PM
  #25  
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Yikes! I think I will pass on that job...
 
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