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How to Replace Ignition Coil 97-04 Chevy Venture and Pontiac Montana

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  1. step : Remove the ignition coil (1:31)
    • Use an 8 mm wrench to disconnect your negative battery terminal
    • Unbolt the ignition coil with your 7/32 inch socket, ratchet and extension.
    • Unplug the spark plug wire.
  2. step : Install the new ignition coil (5:20)
    • Bolt the ignition coil down with your 7/32 inch socket.
    • Reconnect the spark plug wire.
  3. step : Service the rest of the ignition coils. (7:55)
    • Repeat steps 2 and 3 until you have serviced all the coils.
    • Do this one at a time so you don’t accidentally mix up your spark plug wires.
    • Reconnect your negative battery terminal with your 8 mm wrench.

Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the internet. Hi, I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20 plus years experience restoring and repairing cars and trucks like this to show you the correct way to install parts from 1AAuto.com. The right parts installed correctly, that's going to save you time and money. Thank you and enjoy the video.

In this video we're going to show you how to replace the ignition coil on this 98' Venture with the 3.4 liter, same as probably the Montana and the Silhouette. These coils are used on a lot of different GM engines. The way we do it on this van may not necessarily be the same as the way it's on your vehicle if you don't have one of these vans. You're going to need a quarter inch drives ratchet, quarter inch is how big this drive is. You'll need an extension, this is about one and a half or two inch extension. You'll probably want you'll need one at least that long. You may want one a little bit longer but it can't be too long and then a 7/32s socket. Coils in this 98 are actually located in the back of the motor; make it a little tough to get to. This is the coil pack here and they're actually mounted back there just like this.

We'll have the- we'll zoom in a little bit. As you can see right here is one of the wires down to the first coil and then here's the other wire down to that first coil and then there's two other coils, coil packs right next. It's not too difficult, you can grab hold the wires easy enough. Pull one off, that's one on the left side as I'm looking at it. I'll pull it over here and then keep it over here and out of the way. Here's the other wire, just going to push that over there. Obviously, just do these one at a time. You can see it's in there like that so there's a bolt right here between the two post where you just took the wires off and then there's a bolt right back here underneath. You pretty much just have to do it by feel. The size of the bolt is a 7/32s standard which is a little weird. What I'm going to do is I can go back, I could feel the post first and then you go back, reach down and feel the bolt. Get my socket extension on there, make sure my ratchet is counter clockwise. We'll just speed up here removing that back bolt. I still have my socket in the extension on there, it's getting easy enough for me to turn with my hands. I'll turn it with my hands until I feel it's ready to pull up and out. There's the first bolt out. Reach in there; I could feel the two posts. Put my socket right down in between. See that you could see that right there, see the two posts and the extension socket right there.

This one, we'll just turn the whole bunch. Make sure it's all the way out and that it won't come out. I'll just leave it there and then pull the coil up. It looks like there's some interference here, the wiring harness back there. Now, I'll pull that up and right out and there's our bolt. Here's our original coil, new coil from 1A Auto, you can see the coil from one another, it's exactly the same. The original coil does have the markings of the cylinder number. This goes to cylinder number five and this one goes to cylinder number two. New coil doesn't have that. This is actually an original equipment coil but it's just meant to replace either of the three original coils. As you could see on the back, the coil does plug in when you bolt it in right there, same thing on the 1A Auto coil. This is one is working fine in this vehicle so I just will replace the original one. When you put it back in, especially on this end one there where some harness is down there, they were getting in the way. What I'm going to do is try and lift those up out of the way a little bit and put the coil back in and you want to be careful that you don't bend the contacts that are down there. You could feel them down there.

I'm going to reach in with this hand, I'm going to feel where those contacts are, I could feel them sticking up. There's a whole bunch of wires and I'm going to make sure out of the way. I'm going to feed my coil in and make sure the backside goes underneath those wires. Now what I'm doing here is gingerly moving the coil around a little bit and trying to get it to settle down on those tabs. You just want to be very careful that you don't bend the tabs at all. It's just a matter of feeling in there with both hands and getting in the right spot and then it goes right down and on. Now we'll speed up through putting those bolts in and then you tighten them up you want to tighten them up nice and snug, they don't have to be overly tight. Make sure it's tightened up. This one from that side goes on there and this one bends up and around and goes back on.

We hope this helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the internet. Please feel free to call us toll free 888-844-3393. We're the company that's here for you on the internet and in person.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet
  • Socket Extensions

  • Sockets - SAE

  • 7/32 Inch Socket

  • Wrenches - Metric

  • 8mm Wrench

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