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I had a alert to clean my muffler fileter on mu 6.6 allison,

Customer Question
I had a alert...

I had a alert to clean my muffler fileter on mu 6.6 allison

Mechanic's Assistant: How many miles are on the car? How has your MPG been lately?

106,000 11 t0 17 depends how I drive it

Mechanic's Assistant: What is the model of your '11 Chevy?

It's 2008 Silverado 2500HD

Mechanic's Assistant: Are you fixing your Silverado yourself? What have you tried so far?

I read on line to take it for a***** turned it off and it cleared 'I went to a different place for fuel, could that have caused it ?

Submitted: 1 year ago.Category: Chevy
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Answered in 20 minutes by:
6/5/2017
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 1 year ago
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 30,420
Experience: GM Grand Master Technician 2007. 14 years experience.
Verified

Hi there, I am Cam.
Poor quality fuel may have caused this, but it might be something as simple as your recent driving habits. If you spend any time idling, only went short trips , both would cause it.

Considering you only reported the clean exhaust filter, the best bet is exactly what the manual said, go for a 20-30 min drive on the highway. Nothing special, just get to speed and cruise. the system will enter PASSIVE REGENERATION and ideally it will clear this message after 20+ mins driving.
Should that fail to clear it, then we might require a shop to put the scanner on and perform a service regeneration.

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