97 Vacuum system

[93GMCSierra]

This may have been asked but searching didnt bring up applicable results.
On a 97 k3500 does the belt driven vacuum pump only run the turbo?
there is no egr on the truck.

[DmaxMaverick]

If you have no EGR, then it is only for the turbo wastegate control.

[93GMCSierra]

Thank you, good information to know.