Nope, I didn't get a solution so the car headed to the shop today to be fixed by someone else. I try to do my own maintenance but this one had me baffled. Thanks.
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Mechanic's toolset, including a full socket set, wrenches and screwdrivers
Torque wrench
Clean shop cloths
Replacement gasket
1
Take out the air cleaner resonator. Disconnect the harness connectors for both the idle air control and the throttle position sensor. Label and then remove all the vacuum hoses from the throttle body.
2
Remove the bracket and the cables for the accelerator control from the throttle body. Loosen and remove the throttle body fasteners.
3
Lift the throttle body off the manifold. Remove the throttle body gasket and inspect it carefully. Replace the gasket as needed or re-install the old gasket to the throttle body after cleaning all the mating surfaces thoroughly.
4
Set the throttle body on the manifold and finger-tighten the fasteners. Torque the bolts to 89 inch pounds.
5
Install the cables and bracket for the accelerator cable, then reconnect the vacuum hoses. Reconnect the harness connectors for the throttle position sensor and the and idle air control valve, then replace the air cleaner resonator.
6
Depress the accelerator pedal to test its movement and to assure that there is no binding. Press the pedal to the floor one time then release it. Make the necessary adjustments.
Remove the air cleaner housing to intake/throttle housing. Remove the shield over the throttle springs. Disconnect the cruise control and accelerator cables. Remove the throttle cable mounting bracket, push wiring harness out of your way. Disconnect the PCV hose at the intake manifold and remove the PCV valve.
remove upper engine cover,disconnect battery ground cable,remove throttle cable and cruise control cable from throttle body.remove intake manifold by gently lifting at throttle body end.should be enough clearance to get to starter
If the cruise control makes the engine seem to run very rough until disengaging it, there could be a problem with the engine itself. As, most cruise control systems just pull on the throttle cable to maintain speed on the highway based on setting the speed with the button.
So, I would look into the engine maybe having an issue with spark plugs, or wires, or another tuneup or mechanical issue.
Idle Air Control Valve Pintle may be bad
If you disconnect the IAC and the problem ceases it can point to this being the problem.:
Removal & Installation3.5L EngineTo Remove:
Before servicing the vehicle, refer to the precautions in the beginning of this section.
Remove the fuel injector sight shield.
Drain the cooling system.
Remove or disconnect the following:
The air cleaner intake duct.
Figure of IAC and TPS electrical connectors disconnected.
The idle air control (IAC) valve and throttle position (TP) sensor electrical connectors.
Figure of cruise control and throttle control cables removed from throttle lever.
The cruise control cable and throttle control cable from the throttle body lever.
The fuel pressure regulator vacuum hose, positive crankcase ventilation (PCV) hose and the throttle body vacuum port hose.
The throttle body coolant hoses.
The throttle control cable bracket, leaving the throttle and cruise cables connected.
The upper nut holding the throttle body to the intake manifold.
The throttle body assembly.
Clean the gasket mating surfaces.
To Install:
Install a new gasket and new studs if necessary.
Install or connect the following:
The throttle body assembly.
Start the top nut by hand.
The throttle body coolant hoses.
Position the throttle control cable bracket and hand start the retaining nuts and bolt.
Torque the three throttle body retaining nuts to 89 in.lbs. (10 Nm). And the bracket retaining bolt to 115 in.lbs. (13 Nm).
The throttle body vacuum port hose, PCV valve hose and the fuel pressure regulator hose.
The throttle control and cruise control cables to the throttle body lever.
The IAC valve and TP sensor electrical connectors.
Before servicing the vehicle, refer to the precautions in the beginning of this section.
Relieve the fuel system pressure.
Remove or disconnect the following:
Negative battery cable.
The Mass Air Flow (MAF) sensor electrical connector.
The air cleaner intake duct.
The PCV valve fresh air tube.
Figure of cruise control cable removed from throttle cable bracket.
The cruise control cable and throttle control cable from the bracket.
The cruise control cable and throttle control cable from throttle body lever.
Figure of IAC valve and TPS connectors removed.
The idle air control (IAC) valve and throttle position (TP) sensor electrical connectors.
Figure of fuel lines removed from retainer on throttle cable bracket.
The fuel feed and return lines from the retainer on the throttle control cable bracket.
The transaxle shift cable clip from the throttle control cable bracket.
Figure of throttle body removed from water crossover.
The throttle body from the water crossover.
To Install: NOTE: The Mass Air Flow (MAF) sensor inlet and the outlet of the air cleaner assembly must line up when installed. Misalignment may cause MIL illumination or driveability concerns.
Install or connect the following.
The throttle body to the water crossover. Torque the bolts to 106 in.lbs. (12 Nm).
The IAC valve and TP sensor electrical connectors.
The throttle and cruise control cables to the throttle body lever.
The throttle and cruise control cables to the throttle control cable bracket. The transaxle shift cable clip to the throttle control cable bracket.
The fuel feed and return line retainer to the throttle control cable bracket.
The MAF sensor electrical connector.
The air cleaner intake duct clamp. Torque the clamp to 27 in.lbs. (3Nm).
The PCV valve fresh air tube.
The fuel injector sight shield. Torque the nuts to 20 in.lbs. (2.3 Nm).
If the manifold was replaced, install or connect the following:
Vacuum source manifold.
Positive Crankcase Ventilation (PCV) valve.
Manifold Absolute Pressure (MAP) sensor.
Throttle body assembly.
Upper-to-lower intake manifold carrier gasket to the upper intake manifold.
Carefully place the upper intake manifold onto the lower intake manifold. Ensure that the alignment pins in the upper intake manifold align with the holes in the lower intake manifold.
NOTE: Apply thread lock compound, to the bolt threads before assembly.
Install or connect the following:
Upper intake manifold. Tighten the upper intake manifold bolts in sequence to 89 in lbs (10 Nm)
Accelerator and the cruise control cables with the bracket to the throttle body.
EVAP purge solenoid vacuum line to the throttle body.
Connect the electrical connectors to the following:
Mass Air Flow (MAF) sensor
Manifold Absolute Pressure (MAP) sensor
Idle Air Control (IAC) valve
Throttle Position (T/P) sensor
EVAP purge solenoid
Install or connect the following:
Throttle body upper support bracket bolt. Tighten the bolt to 89 in lbs (10 Nm)
EGR valve wiring harness heat shield, nut and the bolt. Tighten the nut and the bolt to 89 in lbs (10 Nm)
Remove the accessory drive belt from the supercharger pulley.
Relieve the fuel pressure and remove the fuel injector sight shield.
Disconnect the fuel pipes from the fuel rail and vacuum hose at the pressure regulator.
Disconnect the electrical connectors from the fuel injectors and remove the fuel rail mounting bolts. Remove the fuel rail with the injectors intact.
Disconnect the electrical connectors at the IAC, TPS, MAF, EGR and boost control solenoid. Lay the wiring harness aside.
Remove the air intake duct and remove the EGR pipe from the supercharger.
Disconnect the throttle cable and the cruise control cable. Remove the cable bracket.
Remove the tensioner bracket to supercharger mounting stud.
Remove the supercharger to intake manifold bolts, remove the supercharger from the intake manifold. Remove the supercharger gasket and coolant passage O-rings.
To install:
Replace the oil passage O-rings and the supercharger gasket.
Install the supercharger and bolts. Install the tensioner bracket-to-supercharger bolt. Tighten the bolts to 19 ft. lbs. (26 Nm).
Install the cable bracket and connect the throttle and cruise control cables.
Connect the EGR pipe to the supercharger and install the air intake duct.
Connect the electrical connectors to the IAC, TPS, MAF, EGR and boost control solenoid.
Install the fuel rail and bolts and tighten the bolts to 15 ft. lbs. (24 Nm).
Connect the connectors to the fuel injectors and the vacuum hoses at the pressure regulator.
Connect the fuel pipes to the fuel rail and install the fuel injector sight shield.
Install the accessory drive belt to the supercharger and connect the negative battery cable.
Raise and safely support the vehicle securely on jackstands.
Remove the terminal nuts, washers, and electrical leads from the
starter motor.
Remove the passenger side catalytic converter.
Remove the passenger side engine mount nuts, and lower the
vehicle.
Disconnect the resonance chamber-to-throttle body ducts.
Detach the electrical connector for the Mass Air Flow (MAF) and
the Intake Air Temperature (IAT) sensors.
Disconnect the resonance chamber air intake hose from the air
cleaner housing and MAF sensor.
Remove the (IAC) inlet hose and the intake plenum air inlet hoses.
Detach the electrical connector from the switchover valve and the
remaining vacuum connections.
Install the engine support fixture J28467-A with adapters
J28467-450 or equivalents and raise the passenger side of the engine.
NOTE
Passenger side of the engine must be raised approximately 1.5
inches (38 mm).
Raise and safely support the vehicle securely on jackstands.
Remove the engine mount from the engine mount bracket and cradle.
Remove the engine mount bracket bolts and reposition the bracket.
Remove the starter motor from the vehicle.
To install:
Install the starter motor to the vehicle and tighten the bolts to
44 ft. lbs. (60 Nm).
Position the engine mount bracket and install the bolts. Tighten
to 30 ft. lbs. (40 Nm).
Install the engine mount to the engine mount bracket and cradle.
Partially lower the vehicle.
Lower the engine. Have an assistant guide the engine mount into
place while lowering the engine. The engine mount locator tab must
engage the slot in the cradle.
Reinstall the resonance chamber-to-throttle body ducts.
Raise the vehicle.
Install the passenger side engine mount nuts. Tighten the upper
nut to 30 ft. lbs. (40 Nm). Tighten the lower nut to 41 ft. lbs. (55
Nm).
Install the passenger side catalytic converter.
Plug in the electrical leads, install the washers, and terminal
nuts to the starter motor. Tighten the battery cable terminal nut to 115
inch lbs. (13 Nm). And the solenoid terminal nut to 35 inch lbs. (4
Nm).
Lower the vehicle.
Connect the negative battery cable.
4.6L Engine
Disconnect the negative battery cable.
Disconnect the positive battery cable.
NOTE
In order to get to the starter assembly the intake manifold must
be removed. Refer to the procedure for removing the intake manifold.
Reposition the front bank spark plug wires.
Remove the air intake duct from the throttle body.
Detach the electrical connectors for the intake manifold, Throttle
Position (TP) sensor, and Idle Speed Control (ISC) motor, Evaporative
Emission (EVAP) Control solenoid and Cruise Control Servo.
Disconnect the vacuum hoses at the brake vacuum booster, fuel pipe
bundle and to the body.
Disconnect the PCV hoses at the intake manifold.
Unhook the accelerator cable at the throttle body and position it
out of the way.
Relieve the fuel system pressure. Disconnect the fuel pipe quick
connects at the fuel pipe bundle in the engine compartment.
Remove the EVAP solenoid bracket at the rear (or right) cam cover.
Reposition the transaxle range control cable away from the cruise
control servo.
Disconnect the coolant hoses at the throttle body and to the
coolant reservoir and plug the hoses. Wrap a shop towel around the hoses
when disconnecting to avoid spillage.
Remove the four intake manifold bolts and lift the intake manifold
with the throttle body out of the engine compartment.
Unbolt the solenoid 'S' terminal nut and battery cable nut. Remove
the starter motor mounting bolts, and lift the starter motor out of the
manifold cavity.
To install:
NOTE
Before installing the starter motor to the engine, tighten inner
nuts on the solenoid terminals to be sure they are secure in the cap.
Tighten the inner nuts on the battery terminal and motor terminal to 71
inch lbs. (8 Nm). If the nuts are not properly tightened, the starter
may fail later due to the terminal or cap damage.
Install the solenoid switch lead, and tighten the nut to 22 inch
lbs. (2.5 Nm).
Install the battery cable nut and tighten to 71 inch lbs. (8 Nm).
Install the starter motor and tighten the mounting bolts to 22 ft.
lbs. (30 Nm).
Install the intake manifold with the throttle body onto the engine
and install the four bolts. The four intake manifold bolts must be
tightend in a specific sequence to 71 inch lbs. (8 Nm), then an
additional 120°.
Connect the coolant hoses at the throttle body and at the coolant
reservoir. Add coolant as needed.
Position the transaxle range control cable to the cruise control
bracket.
Fasten the EVAP solenoid bracket to the rear cam cover.
Reconnect the fuel pipes quick connects at the fuel pipe bundle in
the engine compartment.
Hook the accelerator cable up at the throttle body.
Connect the vacuum hoses at the brake vacuum booster, fuel pipe
bundle and to the body. Install the PCV hose at the intake manifold.
Install the electrical connectors for the intake manifold, the TP
sensor ISC motor, EVAP solenoid and the cruise control servo.
Install the air intake duct to the throttle body.
Reposition the front bank spark plug wires.
Connect the negative battery cable.
Connect the positive battery cable.
4.5L and 4.9L Engines
Disconnect the negative battery cable.
Raise and safely support the vehicle securely on jackstands.
Remove the starter motor shield.
Remove the exhaust front and rear pipe assembly.
Remove the flexplate inspection cover.
Disconnect the solenoid 'S' terminal nut and battery cable nut.
Unbolt the starter motor mounting bolts, and remove the starter
motor.
Fig. Typical starter mounting on early models
Fig. Later model starter location and mounting on the 4.9L engine
Fig. Starter mounting on 4.5L engine with a starter shield
To install:
Install the starter motor, and tighten to 32 ft. lbs. (43 Nm).
Install the solenoid 'S' terminal nut. Tighten the nut to 35 inch
lbs. (4 Nm).
Install the battery cable nut and tighten to 12 ft. lbs. (15 Nm).
Install the flexplate inspection cover, the front and rear exhaust
pipe assembly and the starter motor shield.
Lower the vehicle.
Connect the negative battery cable.
Hope trhis help (remember comment and rated this).
check the throttle cable between the pedal and the throttle body generally when they get old they fray up near the body and get stuck. If it looks to be OK see if you can spray it with wd40 or other solvent, right into the cable cover, disconnect it from body and work it back and forth. If it does not free up have it replaced right away.If that does not help, disconnect cruise control temporarily and see if problem continues.
Cruise Control Module
Removal & Installation
To Remove: 
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