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2005 Hummer h2 transmission fluid replacement ?

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Old Apr 5, 2023 | 01:23 PM
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Daniel Z's Avatar
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Default 2005 Hummer h2 transmission fluid replacement ?

What is the transmission fluid type for 05H2, is it the Dexron 3 or 6? Also, in addition to replacing the Filter and Gasket, is there anything else I should be changing/checking? I’m pretty sure I’ve done over 40k miles since a newer but used transmission was installed; is that too many miles before fluid replacement? Thanks.
 
Old Apr 5, 2023 | 03:39 PM
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Old Apr 6, 2023 | 02:01 PM
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Thanks.
 
Old Apr 6, 2023 | 07:11 PM
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Buy a Dorman pan with drain plug for yearly fluid changes. Cheap insurance.
 
Old Apr 11, 2023 | 10:32 PM
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Originally Posted by finall
Buy a Dorman pan with drain plug for yearly fluid changes. Cheap insurance.
I would just use the plug for draining before pulling the pan. Filter should be replaced with fluid every 50k miles at least for normal driving.
 
Old Apr 13, 2023 | 12:57 AM
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Yes, the plug makes it easier to get rid of fluid before unbolting pan. Pan is difficult to twist and remove around the exhaust to begin with. A full pan is a nightmare and mess.The plug is nice for my yearly drains. No filter change then.
 
Old Apr 13, 2023 | 09:03 AM
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Thanks for the info. Pan ordered just need the fluid. Also, can someone tel me the length of the transmission oil dipstick? Mine was missing for some time, ordered a new one but it seems to be too short. Part number would help. Thanks.
 
Old Apr 13, 2023 | 04:16 PM
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Originally Posted by Daniel Z
Thanks for the info. Pan ordered just need the fluid. Also, can someone tel me the length of the transmission oil dipstick? Mine was missing for some time, ordered a new one but it seems to be too short. Part number would help. Thanks.
2005 Dipstick = 32 5/8"







Hope this helps
 
Old Apr 13, 2023 | 07:02 PM
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Old Apr 14, 2023 | 07:15 AM
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To make life less messy, buy a cheap $20 Oil Change Pump from Amazon or eBay, it will suck-out enough oil to prevent spillages when dropping the pan, jacking the front right wheel will help.

Unfortunately my LH exhaust-pipe was in the way by the tiniest fraction probably because the CATs had been replaced and the geometry was slightly different.

I think normally the pan would come out, I say this because one of the "difficult to access" bolts directly above the exhaust pipe had been "chewed" indicating someone had changed the oil & filter previously.

Max fluid that can be drained is approx 5Q total capacity is 11Q
 



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