What is the correct coil pack placement for a 2003 Buick Rendezvous 3.4l v6 or does it not matter.?

Disconnect coil connector - remove screws to cylinder head - pull up to disconnect from spark plug - reverse procedure to install new coils. Existing coils cn be tested by swapping coil with known good coil. https://www.6ya.com/callphilipforhelp

This should help

There is a fuse for the ignition control module , fuse #13 ELEC/ENG 15amp . in the under hood fuse box . The odds of the fuse being bad are astronomical . More likely that ignition module or a crankshaft position sensor is bad . There are videos on youtube on how to test gm ignition systems .

# 8 cylinder??? This is a 6 cyl vehicle

What is litre size of engine? If this is a six cylinder, there is no number 8 cylinder.

Here's a link to your coil. Duralast Ignition Coil C849 2003 Buick Rendezvous 2WD 6 Cylinders 3 4L...

Your vehicle has three coils. They each have two plug wires that need to be removed and then there are two screws holding each of them on.

They are normally replaced individually as needed though, and not as part of a tune-up.

The three coil packs are on the top of the engine, (I assume this is the 3.1 V6?) here is a picture of the coil pack, but all you need to do is follow the spark plug wires back to the coil packs (there are 3 on the V6).

The front bank of plug wire is easy just remove them one at a time and trace them back to the coil pack. making sure you put them back in there clip harness. The rear bank of plug wire is much harder In the shop we have a tool the titls the engine a little foward and allows you to reach in over or around the engine to gain access to the rear bank of spark plug wire . this tool is sold by OTC , Snap on , Matco , Mac or you might try your local parts store to see if they have one for loan or rent . the firing order on your buick is coil nearest the drive side is 1/4 middle coil is 3/6 and the end coil nearest the passanger side is 2/5

passanger side l----l l----l l----l drivers side
2 5 3 6 4 1


front of truck
this is the firing order for a 3.4 v6 vin e

if you replace one by one you dont need a firing order.