2003 Chevy Duramax heavy duty

Asked by GuruCK1MS Feb 27, 2019 at 06:08 PM

Question type: Maintenance & Repair

I have a 2003 Chevy 2500 Duramax. The front
differential has a vacuum line fitting but there is no
vacuum line hooked up to it. Is there supposed to
be and what does that vacuum line do?

1 Answer

5,780

I think you may be looking at the differential vent the hose usually just went to a steel tube on the left frame rail, in the rust belt those tubes lasted about 6 years.

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