1997 chev s10 vortec makes fast clicing sound by firewall passenger side.

.....ask a Chevy dealer

utube site m.youtube.com has it shown as a 1993 chev s10 blazer 4.3 l vortec v6
so I would say that yes is the answer

Should be 1-2-3-4-5-6.
The odd cylinders are on the passenger side.

For the AC-it is located on the passenger side firewall, about 3/4 of the way down from the top of the engine-best to jack up the passenger side of the vehicle (use a jackstand) and get under the vehicle behind the front passenger side tire-it is right there, exiting the firewall under the heater core hoses.

fuel pump relay is behind a plastic panel inside the passenger side glove box in side the truck.

Blower motors are normaly replaced rather than serviced. It is on the firewall on the passenger side. The bottom screws can be a bugger to get to but it all in all it isn't a real hard job. Warning about A/C is because there is A/C? lines and the evaporator is in the smae area as the fan. Here is a picture of the fan location

1-6-5-4-3-2 The driver side is odd and the passenger is even. front of the motor is low number cylinder going up to the firewall

1997 Ford Mustang 3.8 liter V-6 VIN "4"

Cylinder # passenger side radiator to firewall, 1-2-3
Cylinder # passenger side radiator to firewall, 4-5-6

Coil numbering
Radiator side, passenger to driver side 5-6-4
Fire wall side, passenger to driver side 1-2-3

Thank you for using fixya and good luck

IF BOTH TRANS ARE THE SAME,THEN YOU SHOULD HAVE NO PROBLEM

check underneath you hood, on the driver's side, there is a little ball lookin thing. there should be a long skinny hose that connects to it. if it is rotted out or has a leak, your vents will not change over because they are vacuum powered. the vents switch by using the vacuum coming from that long skinny hose. check the entire hose because it splits off into many other things and runs from the little ball thing under the hood on the drivers side and runs along the firewall toward the passenger side. mine is starting to rot and i need to change it as well. any kind of little vacuum leak from that hose will either make your vents move slowly or not at all. im not a gm technician, but i did replace the head on my 2.2l 94 s10 with a Chevy tech. he noticed that those particular hoses on my truck were dry rotted and told me what they were and what it did. like i said, the hose will start at the ball looking thing under the driver's side of the hood, run down behind the plastic piece thats on top of the brake booster and run along the firewall towards the passenger side. you can just get new hose from autozone or carquest and cut it to your lengths, as long as its the same size width wise (or thickness). good luck. its really not a big deal, and its a good place to start and see if it helps.