Bad ignition switch,or issue with ECM.
Did you check the fuse and the wiring going to the pump?
What is the ecm? Fuse is good. How do I check wiring when it is all in a harness
Looking for a Used Savana in your area?
CarGurus has 1,239 nationwide Savana listings starting at $3,799.
Search GMC Savana Questions
GMC Savana Experts
Related Models For Sale
Used Cars For Sale