20 Most Recent 1996 GMC Yukon - Page 9 Questions & Answers

the resistor maybe bad. its located in the dash ahead of the drivers right knee, it looks like a cigarette pack with fins. (aluminum)

It probably indicates that the cable is not being fully retracted when brake is disengaged. Spray as much of cable as possible with WD-40, allow to sit for a few hours, the engage and disengage the brake several times untill it loosens. If this fails the cable may be stretched and needs to be replaced.

first check the starter relay,switch it with another of same color if it still does not start examine the key switch i bet you will find that its not turning all the way to start the engine remove the upper and lower panels that cover the switch. you will need to remove the switch by using a small screw driver to push downward the locking pin that is located at top of the switch housing, the switch has to be turned forward to allow this to happen, once you remove it insert a large screw driver and turn the rectangle slot to the start position if engine starts you will need a new key and switch consumer auto parts has one for 57 dollars. hope this solves your problem

first gear and/or reverse may be noisy:
Either a torrington bearing or a planetary bearing is on its way out. Trans will eventually die a loud, catastrophic death. Cheaper to rebuild now (saves further damage to hard parts), but requires R&R. It is drivable until it breaks.
Thank you for using fixya and good luck

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.
   

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 pry tool. 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.
    

Exploded view of the sector gear timing position (OFF-LOCK)



Remove all burrs from the lock module and cylinder assembly

more than likely it wouldn't be the freeze plug but normally the these vehicles leak from the intake or the fitting for the heater hose going into the intake. but as far as freeze plugs there should be one behind the a/c compressor somewhere close by

you will need to replace al the hydraulic components of the braking system, sorry

check the ground cable for the rear lights its at the back on the frame

Either you didn't bled it thoroughly or the line isn't correctly installed and it leaks. Check everything again and do a proper bleed this time.

either the fuel filter is blocked or the pump is weak ,

p1345 ckp/cmp correlation. Basically the timing is off...you can't time this motor the conventional way, you will need to find someone with a scan tool that reads camshaft position offset...the spec is 0 at 1200 prm.
P0441 EVAP emission canister purge is contolled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
P1406 code, try this before you pay a shop to fix it. Remove your EGR valve and soak it in about an inch of good carbon cleaner. Dont submerge the whole thing, just the bottom part where the valve seats. Leave it overnight and clean it really good the next day with a pick and a brush. (a small screwdriver and an old toothbrush work just fine.)
Push open the valve and carfully clean any carbon built up around the valve and seat. The valve should move freely and NOT stick in the closed position. When the valve is dry, reinstall the EGR valve and clear the codes. P1406 EGR Pintle Postion Circuit
Thank you for using Fixya, you can work on the P0441 and P1406. The P1345, your going to need a scanner to set the timing.
TEST PROCEDURE
The ignition timing cannot be adjusted. The distributor may need adjusting to prevent crossfire. To insure proper alignment of the distributor, perform the following:

With the ignition OFF, install a scan tool to the DLC.
Start the engine and bring to normal operating temperature. IMPORTANT: Cam ****** Offset reading will not be accurate below 1000 RPM.
Increase engine speed to 1000 RPM.
Monitor the Cam ****** Offset.
If the Cam ****** indicates a value of 0°+/-2°, the distributor is properly adjusted.
If the Cam ****** does not indicate 0°+/-2°, the distributor must be adjusted.
ADJUSTING PROCEDURE

With the engine OFF, slightly loosen the distributor hold down bolt. IMPORTANT: Cam ****** Offset reading will not be accurate below 1000 RPM.
Start the engine and raise engine speed to 1000 RPM.
Using a scan tool monitor Cam ****** Offset.
Rotate the distributor as follows:
4.1. To compensate for a negative reading, rotate the distributor in the counterclockwise direction.
4.2. To compensate for a positive reading, rotate the distributor in the clockwise direction.

Repeat step 4 until 0°+/-2°, is obtained.
Turn the ignition OFF.
Tighten the distributor hold-down bolt to 3 Nm (25 lb. ft.).
Start the engine, raise engine speed to 1000 RPM and recheck Camshaft ****** Offset.

A particular camber measurement is critical to cornering. If it doesn't seem like you are experiencing any handling issues, than you should be fine. Have the vehicle aligned every 6 months and while they are doing that they will inspect the suspension. This should give you better piece of mind.

If you just had a new trany put in, What was wrong with the old one? Are thay saying the trany broke the computer?

A. Fuse

B. Something was not pluged back in.

C. A wires was damaged when trany was instaled.

D. Corrision in plugs**

E. Bad computer

This is serious!!! Using a long screwdriver place it on the intake manifold, valve covers, etc to determine where the sound is coming from. Place your ear against the other end. You will hear more about your engine than you ever expected. If the knocking is heard on top then go to the bottom. If you hear the noise there you have big problems called bad bearings. Not much you can do if this is the case except repalce the bearings or probably better yet, replace the engine. Sorry about the diagnosis.

hardrocko

Thanks for using FixYa and the generous rating.

could be a lot of things, but i would check for a a vaccume leak first!!

check wiring for cracks

its going to be hard without a wire diagram. but a fuse blowing right when you put it in means that a wire is touching ground when its not supose to. this is offten due to a cut in the wire that is touching something metal in your car. your going to have to trace the wire from the fuse box and see where it goes

If you have gotton this code, then it means either you have a bad coil, wire, or spark plug.
Please have them checked and let me know what you find.