Recently my 2008 GMC duramax has suffered a devestating loss of power, accompanied with a sound inside the cab that sounds like air coming through the vents. Upon heavier acceleration, the air sound gets louder. The truck rarely smoked but it has started smoking excessively. Cleaned the air filter, inspected the entire intake, inspected the turbo hoses, found nothing. Any thoughts? Oh, and the gas mileage has dropped off the charts as well.
LMM: 2008 Dmax Loss of Power and Air Noise
- Thread starter 1finediesel
- Start date
NinjaMax, thats the next thing I was gonna check, but it started raining. Thatll be on the to do list tomorrow
Did you ever get this fixed?
I had my boost tube boot tear while traveling and it was a pain, loss of mileage, lots of black smoke, loss of power, and the reduced power warning and limp mode.
We were towing an enclosed motorcycle trailer with our Harley at the time plus had the kids and two dogs. Luckily it happened on the way home and we were able to limp back so I didn't have to pay a shop to find and fix the issue.
Replaced the stock tube and boots with a Banks boost tube, issue fixed.
I had my boost tube boot tear while traveling and it was a pain, loss of mileage, lots of black smoke, loss of power, and the reduced power warning and limp mode.
We were towing an enclosed motorcycle trailer with our Harley at the time plus had the kids and two dogs. Luckily it happened on the way home and we were able to limp back so I didn't have to pay a shop to find and fix the issue.
Replaced the stock tube and boots with a Banks boost tube, issue fixed.
Tig weld your y bridge or replace it with an hsp hi flo y bridge. The stock unit is a pos escpecially with certain egr delete kits as mentioned above.