Replace wiper switch - how to remove steering column shroud/cover

Passive Anti-Theft System (PATS) Transceiver module is around the key lock cylinder behind or under the plastic cover on the upper steering column'
Passive Anti-Theft System (PATS) Transceiver Removal

1. CAUTION: Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.
   Disconnect the battery ground cable, Refer to Section 414-01

1. Remove the ignition switch lock cylinder.
   1. Insert the ignition key into the ignition switch lock cylinder and turn to the RUN position.
   1. Push the ignition switch lock cylinder release tab with a punch while pulling out the ignition switch lock cylinder.
   2. If equipped, remove the tilt wheel handle.
   3. Remove the upper and lower steering column shrouds.
      1. Remove the screws.
      1. Remove the upper and lower steering column shroud.
      2. Remove the lower instrument panel steering column cover.
         1. Remove the screws.
         1. Remove the lower instrument panel steering column cover.
         2. Remove the instrument panel steering column opening cover reinforcement.
            1. Remove the bolts.
            1. Remove the instrument panel steering column opening cover reinforcement.
            2. Remove the anti-theft transceiver module.
               1. Remove the screw from the bottom of the transceiver module.
               1. NOTE: Only apply pressure or leverage below the key cylinder lower rib.
                  Disconnect the electrical connector and remove the module.

double posted, with 1999 added.
the FSM says dont reuse steering wheel bolts.. (unique)
here is an online quote to get to the combo switch
quote;
Removal & Installation

1. Disconnect and isolate the battery negative cable. WARNING(bags can kill, my comment)
   Wait two minutes for the airbag system reserve capacitor to discharge before performing further diagnosis or service.
2. From below the steering column, remove the three screws that secure the lower steering column shroud to the multi-function switch mounting housing.
3. Using hand pressure, push gently inward on both sides of the upper shroud near the parting line between the upper and lower shrouds to release the snap features that secure the two shroud halves together.
4. Remove both the upper and lower shrouds from the steering column.
5. Remove the Steering Control Module (SCM) from the steering column.
6. Remove the two screws that secure the left multifunction switch to the SCM .
7. Disengage the two retaining tabs , next to the screw mounts that secure the left multi-function switch to the SCM.
8. Disconnect the left multi-function switch from the SCM.

To install:

1. Position the left multi-function switch onto position on the Steering Control Module (SCM) .
2. Engage the two retaining tabs, next to the screw mounts that secure the left multi-function switch and firmly snap into place.
3. Install the two screws that secure the left multifunction switch to the SCM. Tighten the screws to 22 inch lbs. (2.5 Nm).
4. Position the lower steering column shroud to the underside of the steering column.
5. Install the three screws that secure the lower steering column shroud to the multi-function switch mounting housing. Tighten the screws to 17 inch lbs. (2 Nm).
6. Position the upper column shroud over the steering column with the hazard warning switch button inserted through the hole in the upper shroud.
7. Align the snap features on the upper and lower shrouds and apply hand pressure to snap them together.
8. Reconnect the battery negative cable.

Hi, the likely problem is a failed switch. Remove the switch according to instructions below and then start the truck again. If the wipers stay off, replace the switch. If they still come on, please get back to me.

REMOVAL & INSTALLATION See Figures 1 and 2

1. Disconnect the negative battery cable. Remove the steering wheel.
2. On vehicles equipped with tilt wheel, remove the tilt lever.
3. On vehicles equipped with tilt wheel, remove the steering column collar by pressing on the collar from the top and bottom while removing the collar.

Fig. Fig. 1: To remove the tilt column control lever, simply rotate it counterclockwise until removed

1. Remove the instrument panel trim cover retaining screws. Remove the trim cover.
2. Remove the 2 screws (#3 in Fig 2) from the bottom of the steering column shroud. Remove the bottom half of the shroud by pulling the shroud down and toward the rear of the vehicle.
3. If the vehicle is equipped with automatic transmission, move the shift lever as required to aid in removal of the shroud. Lift the top half of the shroud from the column.
4. On 1991 automatic transmission equipped models, disconnect the selector indicator actuation cable by removing the screw from the column casting and the plastic plug at the end of the cable.
5. Remove the 2 self tapping screws (#3 in Fig 2) that retain the combination switch to the steering column casting. Disengage the switch from the casting.
6. Disconnect the 3 electrical connectors, using caution not to damage the locking tabs. Be sure not to damage the PRNDL cable.
7. Installation is the reverse of the removal procedure. Torque the combination switch retaining screws to 18-27 inch lbs. (2-3 Nm).

Fig. Fig. 2: Exploded view of the combination switch mounting and column related wire harness connectors

SECTION 211-05: Steering Column Switches 1998 Expedition/Navigator Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 02/11/2000 Multifunction Switch Removal

1. Disconnect the battery ground cable (14301).

1. Remove the ignition switch lock cylinder (11582).
   1. Insert the ignition key into the ignition switch lock cylinder and turn to the RUN position.
   1. Insert a punch through the hole in the lower steering column shroud and push the ignition switch lock cylinder release tab while pulling out the ignition switch lock cylinder.

1. Twist the tilt wheel handle and shank (3F609) and remove.

1. NOTE: Move gear selector to lowest position to access steering column opening cover.
   Release the four clips and remove the steering column opening cover.

1. Remove the upper and lower steering column shrouds.
   1. Remove the three screws.
   1. Remove the lower steering column shroud.
   1. Remove the upper steering column shroud.

1. Remove the multi function switch.
   1. Remove the two screws.
   1. Disconnect the electrical connectors.
   1. Remove the multi function switch.

Installation

1. NOTE: When the battery (10655) is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy.
   To install, reverse the removal procedure.

Multifunction Switch -I suspect this switch or the connection at the harness is bad or contaminated. Removal & Installation To Remove:

1. Disconnect and isolate the negative battery cable.
2. Remove the upper and lower steering column shrouds.
3. Disconnect wire connector from the back of the multifunction switch.
4. Remove screws holding multi-function switch to steering column adapter collar.
5. Remove the multi-function switch.

To Install:

1. Position the switch on to the steering column and install the mounting screws.
2. Connect the electrical connectors to the switch.
3. Install the upper and lower steering column shrouds.
4. Connect the negative battery cable.

Ignition Switch Removal & Installation To Remove:

1. Disconnect battery negative cable.
2. Disarm air bag system.
3. Remove driver air bag module.
4. Loosen screw and lift horn pad to remove.
5. Remove lock nut and washer. CAUTION
   Do not hammer on steering wheel. Damage can occur to the energy absorbing portion of the steering column.
   
6. Pull dynamic damper forward and lift up to remove.
7. Remove steering wheel.
8. Remove steering column shrouds.
9. Remove lower cover.
10. Remove multifunction switch.
11. Remove entire lower portion of dash.
12. Remove mounting fasteners and lower steering column.
13. Remove bolts and separate ignition switch from steering column.

To Install:

1. Install ignition switch to steering column and install bolts.
2. Raise steering column and install mounting fasteners.
3. Install lower portion of dash.
4. Install multifunction switch.
5. Install lower cover.
6. Install steering column shrouds.
7. Install steering wheel.
8. Install dynamic damper.
9. Install washer and lock nut.
10. Lift horn pad and install screw.
11. Install driver air bag module.
12. Connect battery negative cable.

Remove plastic cover around column, three or four screw's, then remove three small bolt's on wiper switch same switch as turn signal there together, disconnect harness and remove and replace with new switch, there's no service to switch if bad it just get replace.Hope this was very helpful

Sounds like a bad wiper switch assembly.

Removal & Installataion

1. Disconnect the negative battery cable. Remove the steering wheel.
   
2. On vehicles equipped with tilt wheel, remove the tilt lever.
   
3. On vehicles equipped with tilt wheel, remove the steering column collar by pressing on the collar from the top and bottom while removing the collar.
   

To remove the tilt column control lever, simply rotate it counterclockwise until removed

Exploded view of the combination switch mounting and column related wire harness connectors

2. Remove the instrument panel trim cover retaining screws. Remove the trim cover.
   
4. Remove the 2 screws from the bottom of the steering column shroud. Remove the bottom half of the shroud by pulling the shroud down and toward the rear of the vehicle.
   
5. If the vehicle is equipped with automatic transmission, move the shift lever as required to aid in removal of the shroud. Lift the top half of the shroud from the column.
   
6. On 1991 automatic transmission equipped models, disconnect the selector indicator actuation cable by removing the screw from the column casting and the plastic plug at the end of the cable.
   
7. Remove the 2 self tapping screws that retain the combination switch to the steering column casting. Disengage the switch from the casting.
   
8. Disconnect the 3 electrical connectors, using caution not to damage the locking tabs. Be sure not to damage the PRNDL cable.
   
9. Installation is the reverse of the removal procedure. Torque the combination switch retaining screws to 18-27 inch lbs. (2-3 Nm).
   

Disconnect and Isolate Negative Barrety cable. Remove screw in bottom of steering column shroud cover. ( bottom side of steering column between wiper switch and turn signal switch) Unsnap shroud halves and remove from column. Disconnect wireing harness connector from multi function switch. Remove 2 screws securing switch to mounting housing. Install in reverse order.

This is for a 97 but it may give you some help...

MULTI-FUNCTION WIPER SWITCH
REMOVAL
Tilt the column up and remove the six screws holding the lower column shroud.
Tilt the column down and remove the upper shroud Upper Shroud Removal
Tilt the column up and remove the one steering column tilt lever screw at base of lever. Remove tilt lever and lower shroud.
Using a screwdriver in place of the lever, tilt the column down. Remove the two mounting screws on the switch and remove the switch. Remove the wiring from the hooks and disconnect the two electrical connections on the multi-function switch. Remove the multi-function switch.