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how do you chang the ignition switch on a 1997 chevy c1500 pickup truc

Does it require taking the...

Does it require taking the steering wheel off if so is it better to take it to a dealer or can I do it at home.

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Answered in 1 hour by:
8/29/2008
Bob
Bob, Auto Tech
Category: Chevy
Satisfied Customers: 4,087
Experience: Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
Verified

There is a difference between changing the ignition switch (electrical part) and changing the ignition lock cylinder (part the key goes into) Sending you instructions for both. Some of it will be repeated, but you should read both so your sure of what your doing. You can rent a steering wheel puller. If you just unhook the battery and wait 10 minutes, that will disable the air bag, so it is safe to work with. Thanks

 

1995-98 Models

See Figures 3, 4 and 5

CAUTION When performing service around the SIR system components or wiring, the SIR system MUST be disabled. Failure to do so could result in possible air bag deployment, personal injury or unneeded SIR system repairs.

When carrying a live inflator module, make sure that the bag and trim cover are pointed away from you. Never carry the inflator module by the wires or connector on the underside of the module. In case of accidental deployment, the bag will then deploy with minimal chance of injury.

When placing a live inflator module on a bench or other surface, always face the bag and trim cover up, away from the surface.

  1. Disconnect the negative battery cable and disable the SIR system.
  2. Remove the upper and lower shroud, air bag module and the steering column.

Click image to see an enlarged viewFig. 3: Exploded view of the removal of the SIR coil assembly

  1. Remove the retaining ring, SIR coil assembly, wave washer.
  2. Remove the shaft lock retaining ring using tool J 23653-SIR or its equivalent to push down the shaft lock shield assembly. Discard the ring.
  3. Remove the shaft lock shield and turn signal cancel cam assembly.
  4. Remove the park lock cable assembly from the lock module assembly.
  5. Remove the key alarm switch, if equipped by gently prying the alarm switch retaining clip with a small prytool. Rotate the alarm switch 1/4 in. turn and remove.
  6. Remove the two tapping screws and the ignition key and alarm assembly. Let the switch hang freely.

CAUTION The lock assembly is under slight spring tension. Hold the lock bolt in place while removing the lock module assembly.

  1. Remove the three pan head tapping screws and the lock module assembly.
  2. Remove the backing plate from the module.

Mark the two sector gears at the

OFF-LOCK position to ensure proper reassembly

  1. Remove the sector gears.
  2. Remove the positioning tab on the end of the lock cylinder using an 1/8 in. burring tool. Remove all burrs from the lock module and cylinder assembly.
  3. Push on the locking tab of the lock cylinder from inside the lock module assembly and remove the lock cylinder.

To install:

  1. Align the marks on the sector gears and install the gears and the backing plate to the lock module assembly.
  2. Install the lock cylinder set and ensure that the lock module assembly is in the OFF-LOCK position.
  3. Install the key in the lock cylinder and ensure that it is in the OFF-LOCK position.
  4. Line up the locking tab with the slots in the lock module assembly and push the cylinder into position.
  5. Rotate the lock cylinder to the ACC position. The alignment arrows on the sector gears should be pointing towards each other.
  6. Rotate the lock cylinder to the LOCK position. Push the lock bolt in until it is flush and align the lock module assembly with the head assembly and install the lock module assembly.
  7. Install the three pan head screws and tighten to 53 inch. lbs. (6 Nm).
  8. Install the ignition and key alarm switch assembly and the fasteners. Tighten the fasteners to 12 inch. lbs. (1 Nm).
  9. Install the key alarm switch. Make sure the retaining clip is parallel to the lock cylinder. Rotate the alarm switch 1/4 in. turn until locked in place.
  10. Lubricate the lower brass surface of the turn signal cancel cam assembly with synthetic grease and install the assembly.
  11. Align the inner block tooth of the lock plate to block tooth of race and upper shaft assembly and install the assembly.
  12. Install a new shaft lock ring using tool J 23653-SIR and ensure the ring is firmly seated in the groove on the shaft.
  13. Install the center race and upper shaft assembly.
  14. Place the ignition switch to the lock assembly and ensure the coil is centered.
  15. Install the wave washer and the SIR coil assembly.
  16. Install the retaining ring and route the coil wire along the steering column.
  17. Install the wire harness straps to the steering column harness.
  18. Install the park lock cable assembly with the transmission in Park and the ignition switch in the OFF-LOCK position.
  19. Install the upper and lower covers, lock cylinder set and tilt lever (if equipped).
  20. Install the steering column and enable the SIR system. Connect the negative battery cable.

Click image to see an enlarged viewFig. 4: Exploded view of the sector gear timing position (OFF-LOCK) Click image to see an enlarged viewFig. 5: Remove all burrs from the lock module and cylinder assembly

 

1995-98 Models

See Figures 1 and 2

Click image to see an enlarged viewFig. 1: Exploded view of the ignition and key alarm switch-1996 C/K series

  1. Remove the column shroud halves.
  2. Remove the column-to-dash attaching bolts and slowly lower the steering column, making sure that it is supported.
  3. Remove the multi function switch if necessary.
  4. Remove the key alarm switch, if equipped by gently prying the alarm switch retaining clip with a small screwdriver. Rotate the alarm switch 1/4 in. turn and remove.

WARNING Extreme care is necessary to prevent damage to the collapsible column.

  1. Make sure that the switch is in the Lock position. If the lock cylinder is out, pull the switch rod up to the stop, then go down one detent.
  2. Disconnect the actuating rod from the switch.
  3. Remove the two screws and the switch.

To install:

  1. Before installation, make sure the switch is in the Lock position.
  2. Attach the actuating rod to the switch.
  3. Install the switch using the original screws. Tighten the screws to 12 inch. lbs. (1.4 Nm).
  4. Install the key alarm switch, if equipped . Make sure the retaining clip is parallel to the lock cylinder. Rotate the alarm switch 1/4 in. turn until locked in place.
  5. Install the multi function switch if removed.

CAUTION Use of screws that are too long could prevent the column from collapsing on impact.

  1. Replace the column. Tighten the nuts to 22 ft. lbs. (29 Nm); the bolts to 20 ft. lbs. (27 Nm).
  2. Install the column shroud halves.

Click image to see an enlarged viewFig. 2: Exploded view of the alarm switch removal-1996 C/K-Series

 

 

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Customer reply replied 9 years ago

Thank you for such an in depth answer I believe it is the cylinder lock because we got the truck started by putting the key in and giving it a good whack. If I am off base please let me know.

Sounds like your on the right track. If nothing else, if you remove the part with the key in it, the lock cylinder, you should be able to see if it will turn when it is out of the steering column or not, or if the ignition switch part will turn with a small screw driver or not. Which ever one does not work, gets replaced. Good luck and take your time so nothing extra gets broken. Thanks
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Customer reply replied 9 years ago
when this happened originaly the key would turn but the engine would not crank but all of the acceories worked like the radio and AC what do you think sorry if I seem redundant but the last steering wheel I removed was on my first car a used 77 T-Bird 15 years ago.

If everything else was working, there is always the possibility that the starter motor or solenoid was not doing it's job. If it is still dong so it is pretty easy to test the starting system. If not, let me know how far into the tear down you are and maybe we should see about diagnosing some of it first? If the thing still will not engage the starter, see the note below, or let me know what it is doing, thanks

 

If you are sure the battery is good and fully charged and the cable connections are all good. You will need to check for voltage at the small purple wire on the starter solenoid while some one engages the starter. If you have good voltage at the purple wire and at the large battery terminal both, you will need to replace the starter. If you do not have voltage at the purple wire let me know so we can test the starting system and find where the problem is. I will need to know if it is a standard shift or an automatic. But be sure to check to see if you have any theft or security lights coming on, on the dash first. It may be an issue with the security system also. Thanks, Bob

Bob
Bob, Auto Tech
Category: Chevy
Satisfied Customers: 4,087
Experience: Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
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Customer reply replied 9 years ago

Thank you very much I will check back with you as I go. I have not started yet I wanted to get answers before I started. I will check the starter first and go from there. You are very informative, and that is awesome!!!

Good deal. I will be on and off line most of today, but will check in often. Just drop me a note as you go and we will see if we can get you fixed up, maybe without having to worry about the steering. Let me know how it goes. Thanks
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