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The engine in your 2008 Hummer H3 should be running when you perform a transmission fluid level check, otherwise it will be inaccurate. The video above shows where the transmission fluid dipstick is located in your H3 and how to check the transmission fluid level. If the transmission fluid level in your H3 is low, you need to add transmission fluid through the dipstick tube. When adding transmission fluid to your H3, be sure to add it slowly as it will fill up quickly and is difficult to remove excess fluid if you overfill.
If you are having problems with the transmission in your H3, such as clunky shifting or hesitation, check the fluid level first - it is amazing how many drivers pay thousands of dollars for transmission work when a half quart of transmission fluid would have fixed the problem.
Learn how to diagnose and fix minor oil leaks in your car2009 Hummer H3 3.7L 5 Cyl.
If you are leaking oil and parking on your oil spots each night, the oil is breaking down your tires' rubber2009 Hummer H3 3.7L 5 Cyl.
Did you know that heat is worse for your battery than cold? Replace it every 4 years2009 Hummer H3 3.7L 5 Cyl.
Sure you can take it in for a $19 lube, but are you OK with a stripped oil pan and cheap parts in return?2009 Hummer H3 3.7L 5 Cyl.
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2008 Hummer H3 3.7L 5 Cyl.