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When changing the spark plugs on a 2003 GMC Envoy XLT do the wires just pull off the plug as most wires do or is there a secret that you need to know in order to remove the wires?
Wiki User
∙ 17y ago
There are not any wires. This engine used a coil over the plug to fire it. The coil is held in place by two long bolts for each coil. CAREFULLY remove the bolts without cranking hard on them .... they have been known to snap if overtightened. Then lift out the coil and leave the wires attached. The plug is directly below and can be easily removed. Do not overtighten!
Wiki User
∙ 17y ago
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When changing the spark plugs on a 2005 GMC Envoy XLT do the wires just pull off the plug as most wires do or is there a secret that you need to know in order to remove the wires?
try twisting the wires before you pull .Thanks, I tried it several times with quite a bit of force, but when a few would not come off I did not want to force just in case there was some kind of locking device that I did not know of.
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