On the firewall, passenger side.
In a 1988 Chevy truck, the fuel pump relay is typically located in the under-hood fuse block, which is situated near the battery. You may need to remove the cover to access the relays. Additionally, it can sometimes be found in the cab, under the dashboard, near the driver's side. Always refer to the vehicle's service manual for specific details and diagrams.
It is located on the brake pedal arm under the dash.
There are several relays on that vehicle, need to know which one you are looking for.
The coolant fan relay on a 1988 Chevy Celebrity with 2.8L V6 is on the radiator support bracket behind the right hand headlights.
Behind the glovebox and the passenger side speaker.
Yes
Are the door interchangeable on an 1987 chevy truck and an chevy blazer 1988
Yes, But it won't look right. 1988 is when chevy redesigned the body / changed it.
Look at the lower rear end of engine
It should be at the base of the throttle body.
NO. 1988 is when chevy changed everything.
passenger side firewall behind black plastic cover just left of valve cover