Dear JK
How do I change the rear 3 spark plugs and wires on a 2001 Silhouette 4.3l







JK:
Well there are 2 ways to get to those. Either way is not easy. The plug wires are very
difficult to get off. Need to turn the wire on the plug to break the wire loose.You can get
them from the top while laying on the engine using a universal/swivel plug socket on an
extension. some techs. unbolt the the two upper engine mount stuts and puul the engine
forward, then hold it in place with a special holding tool. I always do it from under the
van. Still, very difficult. The front one you can get to through the wheel well, the other
two from putting your arms up along the exhaust pipe. Dropping the exhaust pipe from
the manifold helps. You can alo gain some room by removing the 2 rear frame bolts
while SUPPORTING the frame with a screw jack. BE VERY CAREFULL! If you lower the
frame too much (more than 4-6 in.) the steering shaft can become disconnected from
steering column and cause all kinds of grief. Either way, is difficult even with
universal/swivel socket. Your arms will get stuck here and there and maybe cut up too.

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