You have to take the interior engine cover off to access the spark plugs.
First take out the two screws that hold the drink holder, Take all the Philips screws that hold the leather/covering, Remove two screws/bolts in ash tray compartment, then remove two bolts at the bottom front of engine cover, lastly unlatch both sides of the cover. The best way to remove the cover is to push the bottom toward the engine and pull the top out(away from engine) and up...it's tight.
follow the spark wires. four on each side of engine. they go right to the plugs.
how u change spark plugs on 1998 gmc safari van
ac delco spark plugs are type that originally came with 2003 GMC envoy
To change the spark plugs in a 1997 astro van do I have to change the spark plugs from the bottom of the engine/
The gap for spark plugs in a 96 GMC sierra is .60
spark plug gap for 1994 gmc jimmy
Take off the plastic engine cover with the three or four bolts pending on which model, then remove the ignition coils and ignition coil plugs, and presto! you have access to all your spark plugs.
There is not one.
The gap on spark plugs is .042.
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On either side of the engine in between the exhaust manifold you wll find your boots.