Here are your instructions for replacing the spark plugs. It is a pretty good job on the V6.
You have to remove the upper intake manifold to get to the back spark plugs.
Upper Intake Manifold
- Remove the air cleaner outlet tube.
- Remove the crankcase ventilation tube
- .Loosen the clamps.
- Remove the air cleaner outlet tube
2.Remove the three nuts and the engine appearance cover
3.Disconnect the cables.
- Disconnect the throttle cable.
- If equipped, disconnect the speed control cable.
- Remove the throttle cable bracket bolts
4.Disconnect the throttle position (TP) sensor and idle air control (IAC) electrical connectors
5.Disconnect the exhaust gas recirculation (EGR) valve vacuum hose and EGR tube nut
6.Disconnect the EGR vacuum regulator solenoid electrical connector and vacuum hose.
7.Disconnect the three vacuum hoses on the back of the intake manifold.
- Disconnect the chassis vacuum hose.
- Disconnect the engine vacuum hose.
- Disconnect the positive crankcase ventilation (PCV) hose
8.Disconnect the vapor management valve (VMV) vacuum hose
9.Disconnect the two electrical connectors attached to the left side of the upper intake manifold
10.Disconnect the power steering pressure (PSP) sensor electrical connector
11.Remove the bolt and position the transmission vent hose and bracket aside
12.Remove the nut from the wire harness.
13.Remove the eight bolts and the upper intake manifold.
- Remove and discard the gaskets.
- Clean all sealing surfaces.
Now you will have to remove the coil packs and the spark plugs will be under them.
Remove the ignition coil-on-plug.
- Disconnect the electrical connector.
- Remove the bolt.
- Remove the coil-on-plug
Now when you reinstall the upper intake manifold torque the bolts in this sequence.