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Problem with h3 with 5 cylinder

jesse11551

Probationary Member
Messages
3
Location
Virginia
My h3 makes a crazy amount of noise when it shifts from the 2nd to 3rd gear but does not output any more power the more I press down on the gas so I try to keep it below 3rd gear to avoid danger now. Does anybody know why this happens?
 

Jack_M

Well-Known Member
Messages
90
Location
Vanderbilt, Mi
This is your motor, any questions?
0611or_02_z+hummer_h3+vortec_3500_engine.jpg
Nothing a 5.3 swap cant fix!
 

lowtrac

Well-Known Member
Messages
222
Location
Georgia
Sounds more like a transmission problem to me. What color is your transmission fluid? Does it smell burned?



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alrock

El Diablo
Staff member
Messages
10,442
Location
Scottsdale
While Jack may be on to something, lowtrac is probably more on target. Check your transmission fluid. If it's burned, you can try doing a flush to see if new fluid helps. If it is low, add fluid and drive it to see if there are improvements. I suspect you are going to probably need a transmission service.
 

lowtrac

Well-Known Member
Messages
222
Location
Georgia
Doesn’t look too bad to me. It’s dark but I’ve seen a lot worse. Have you ever changed the fluid?


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