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Reply With QuoteUpdate code was gone today no light and it showed nothing in the scanner. Still have the screech going to pull the belt to isolate it.
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This is a discussion on Engine code 33 within the Duramax Forum forums, part of the General Discussion category; I was trouble shooting a squeal/screech today. It kicks in a 3000 RPM as soon as the rpm's drop IE ...
I was trouble shooting a squeal/screech today. It kicks in a 3000 RPM as soon as the rpm's drop IE the tranny shift or I let off the throttle the noise stops. It does it in park or neutral the same as driving. I was unable to isolate it. But when the hood up its pretty loud and high pitched enough to hurt your ears. Then all of the sudden I got a random check engine light. I took it down had them scan it and got a engine code 33 something about the egr valve or low vacuum. Has anyone else had this happen are the two symptoms related or do I have two very different problems?
95 yukon 6.5
Update code was gone today no light and it showed nothing in the scanner. Still have the screech going to pull the belt to isolate it.
Sent from my SGH-T679 using Tapatalk 2
95 GMC Yukon 2 Door. 6.5 TD pmd relocation 3" exhaust Duramax Cooling upgrades. And Cold air intake.
Update new belt no screech. Gotta test drive and see if the code comes back.
Sent from my SGH-T679 using Tapatalk 2
95 GMC Yukon 2 Door. 6.5 TD pmd relocation 3" exhaust Duramax Cooling upgrades. And Cold air intake.
The 6.5l's are know for the vacuum pumps locking up, check into that.
06' Silverado 2500HD 6.6l Duramax
It wasn't locked up. Im guessing the belt was slipping.
Sent from my SGH-T679 using Tapatalk 2
95 GMC Yukon 2 Door. 6.5 TD pmd relocation 3" exhaust Duramax Cooling upgrades. And Cold air intake.
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