I’m fairly clueless when it comes too Smog / California emissions etc .. what’s what and how all that works , but i know I had a broken vaccum line situation when I bought the suv .
I’ve got a 99” suburban from cali it has the Electronic style SAI “secondary injection air pump “ which sits in the spare battery box on Driver side .
I got around to buying new vaccum hose to fix and use in place of that old special plastic factory line that’s shaped with a zillion curves and dry rotted .
At the SAI Pump There’s two small vaccum lines that port out of the the pump , one goes to some port on top of the manifold and it has an outlet that runs out of that same port stretching over into the heater valve solenoid which is on the passenger side firewall below the heater core inlet.
I don’t know why or what that vaccum line does or why it goes from SAI pump to a heater valve solenoid .
But I wanted to make sure I routes it all correctly with the new “rubber vaccum line”
No visual indication too find at any local parts yard because most of the c1500s here in Michigan are not cali emission's Nor do they have a SAI pump
I’ve got a 99” suburban from cali it has the Electronic style SAI “secondary injection air pump “ which sits in the spare battery box on Driver side .
I got around to buying new vaccum hose to fix and use in place of that old special plastic factory line that’s shaped with a zillion curves and dry rotted .
At the SAI Pump There’s two small vaccum lines that port out of the the pump , one goes to some port on top of the manifold and it has an outlet that runs out of that same port stretching over into the heater valve solenoid which is on the passenger side firewall below the heater core inlet.
I don’t know why or what that vaccum line does or why it goes from SAI pump to a heater valve solenoid .
But I wanted to make sure I routes it all correctly with the new “rubber vaccum line”
No visual indication too find at any local parts yard because most of the c1500s here in Michigan are not cali emission's Nor do they have a SAI pump