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DIY Steering Wheel Position Sensor install *pics*

128K views 68 replies 43 participants last post by  RedVixen1982  
#1 · (Edited by Moderator)
I decided to do this write up after finding little help from the intrawebs on exactly how to replace your SWPS on your CTS-V. The symptoms for this sensor going bad on the V are this: The DIC will suddenly and seemingly unexpectedly flash "Stability Control Engaged", this message will go off in a few seconds. In addition you may experience the ABS kicking in with the warning as well. Also after a few instances of the "Stability Control Engaged" warning, the solid "Service Stability System" light will come on and only go off after you press "OK". It should be noted this is what my car was doing and others have experienced different degrees of these warnings. (Mine was severe, coming on quite often).

Another note is that other members have reported these same symptoms as being the YAW sensor which is located under the console. This seemed to be the rarity rather than the norm (SWPS). And it turned out mine was the SWPS so without further explanation of the symptoms here is the fix!

When you decide to undertake this project get the sensor (mine was $88 from the local caddy dealer) and plan to work on the car the following day.

Remove the (-) terminal from the battery the night prior. This will ensure the following morning no juice is left in the system to mess with the air bags :helpless: I also pulled the air bag fuse from under the rear seat to be extra sure!

Remove the engine cover (it just snaps on) and the strut bar (4 18mm bolts)

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Then locate the steering shaft and rotate the steering wheel so that the bolt holding the lower portion from the upper portion is on top, remove the bolt then straighten out the wheel again. (12 or 13mm bolt)

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From here go inside the car and remove the knee bolster and lower plastic piece that holds the vanity light. (4 Phillips screws and clips on the knee bolster).

Remove the metal shield that is now exposed. (2 10mm bolts accessed through the holes cut in the metal shield).

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Unplug the giant harness connector.

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Don't worry about this black wire it will have enough slack to work with.
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Remove the four bolts that hold the steering column in place. (all 13mm) The pics are kinds tough to see on the top ones but it will be painfully obvious once you get in there!

Bottom bolts.

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Top Bolts.

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WARNING! Before you proceed ensure the steering wheel does not rotate when pulled out until you get it re-attached to the lower portion in the engine bay. Failure to do so may cause damage to your airbag coil! (Don't worry it will move a bit just don't get complacent and not realize it has turned a bunch on you)!

At this point the column should be hanging loose.

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You should be able to pull it out through the firewall, do so and rest the column as pictured. (You may want to rest it on a rag here as I scratched my plastic up a bit).

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Remove the little plastic clipped pictured and slide the old position sensor forward.

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You will have to remove this bolt to fully slide off the old SWPS.

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Then slide on your new sensor and put everything back together. Be sure NOT to pull the pin out of the new sensor until the column is back in so that the internals of the sensor don't rotate on you. (I found you have to pull the pin before pushing the column back through the firewall fully or the black dust boot will block you from doing so after).

Also before you start to try and get the column to line up with the piece in the engine bay pull out on the very bottom HARD with a set of plyers so that when you are pushing the column back into the lower piece in the bay it does not just slide at the fitting. (it will make sense when you try it once and it just collapses on you)! haha

This whole process took me just 3 hours and that was with my S.O. helping out. I'm sure a mechanically inclined friend could bump off at least half an hour with a 6 pack provided of course!
G/L and if anyone has any questions just PM me.... G/L guys!
 
#2 ·
I'm sure a few people would be interested in this. Deff worth saving.
Good work.

Tony
 
#3 ·
Thank you.
 
#5 ·
nice writeup, thanks. We'll probably save a few bucks on this one!

I am got my first sse warning while driving straight ahead yesterday. this may come in handy down the road...of course gmpp might cover it, but I dont feel like leaving it for a week long joyride so they can "duplicate" the issue.
 
#6 ·
Straight to the FAQ!!

Jcc, are these symptoms as well.. TC randomly engaging followed by complete TC/Stability failure. followed by "service stability system soon". TC light and ABS idiot lights ON and don't turn off until restart...

anyone ever here of failures like this?? any ideas
 
#8 ·
Thank you everyone for the kind words.

As for your symptoms I have never had the TC or ABS LIGHTS come on. The ABS would grab a wheel every now and again and scare the living crap out of me! But no lights, the warning however is exactly on par with the SWPS issue, I would look further into it though before saying SWPS for sure.

Another note to add is that I noticed when I was starting a gentle right curve on the road it would most frequently kick on. This is not always the case though as others report that it happens when going straight (CadzillaTN for one). This is what led me to believe it was the steering sensor for sure though rather than any thought about the YAW sensor.

Straight to the FAQ!!

JCC, are these symptoms as well.. TC randomly engaging followed by complete TC/Stability failure. followed by "service stability system soon". TC light and ABS idiot lights ON and don't turn off until restart...

anyone ever here of failures like this?? any ideas
Any other information about your issue? Does the ABS grab a wheel sometimes? (Brake for a milisecond then release)
 
#9 · (Edited)
Excellent writeup!! :2thumbs:

Mine is doing this same thing (stabiltrak engaged -or whatever) and it feels like the brakes are applied but not violently, and it drives me insane. Are there certain codes that will pop up to tell which sensor (either steering column or YAW) it would be? Or does the message have to be on the DIC at that particular time?

I tried banging on my steering wheel and 99% it won't go off. But it mostly goes off on long distances (straight lines). :(
 
#10 ·
Excellent writeup!! :2thumbs:

Mine is doing this same thing, and it drives me insane. Are there certain codes that will pop up to tell which sensor it would be? Or does the message have to be on the DIC at that particular time?

I tried banging on my steering wheel and 99% it won't go off. But it mostly goes off on long distances (straight lines). :(
From what I have READ the banging on the steering wheel is only when the dealer has the Tech II hooked up to it to see if they are getting funny readings. I did not have mine checked out by the dealer so as for codes I have no clue. I can tell you that (from reading also) that the "codes" can only be read if the "Service Stability System" message pops up and you do NOT hit "Ok". No codes will be stored on the "Stability System Engaged" or whatever it says that just goes off in a few seconds regardless of you pressing "Ok" or not.

For the $90 dollars I took the chance and got lucky I would say yours is probably the same as mine but its a slight gamble. (I was pretty comfortable calling it the SWPS failure because of it coming on when turning right). Yours being in a straight line though is less conclusive IMHO. G/L if your ABS is grabbing then you know it is annoying and scary as heck!

edit/ You edited before I could post so some of my info may seem stupid. :)
 
#15 ·
G/L! Hit me up if you get snagged up at the email above, I should respond within the hour.
 
#16 ·
Excellent writeup. I was wondering if this problem occured on sharp turns. I get a stabilitrack message when I pull into my driveway 3 out of 10 times and am wondering if this is my problem.

thanks
 
#17 ·
Interesting, actually mine is the opposite, at low speeds and sharp turns it would NOT engage. However at high speeds (80+) and slight bends in the highway it would...Hmmm G/L don't know if your SWPS is bad or not.
 
#19 ·
You are welcome! Glad it worked for you.:thumbsup:
 
#21 ·
Its been a while so I don't remember EXACTLY what I experienced although if you read this whole thread I described it a few times. But if it is your SWPS (most likely case) then you can have a dealer (or tech II owner) hook it up and while turning the steering wheel from lock to lock "bang" on the SW and they will supposedly get "wierd" readings.

Again READ this thread I have said it before but its either your SWPS, YAW sensor, or wheel speed sensor.
 
#22 ·
YESSS!! THE STABILITY SERVICE AND RANDOM BRAKING WENT AWAY!!or
remember to back up driver seat as far as possible before you start so u get plenty room. my seat was up quiet a bit and i started gettin pissed off lol.
Putting the lower piece back into upper piece of the steering column at the end is an absolute p.i.t.a. i could upper portion to slide forward enough. This is probably the hardest part of the whole thing. with alot swearing, pulling and wiggling its possible by yourself.
 
#23 ·
Good point, you can't hook up the battery to slide it while mid job. Glad you were able to get it fixed.
 
#24 ·
I love this forum. I had the standard "Stability System Engaged" displays followed by "Service Stability System" display. The dealer replaced the ecbm (spelling ?) and I had the same displays pop up a day or two later. After researching the issue here, I called the dealership and gave them the "diagnosis" of the problem.

I took the car in today and they replaced the sensor. Supposedly fixed. At least, no displays on the way home!

Thanks, Guys!

Mike
 
#25 ·
I love this forum.
Me too! Glad you got it fixed I know I was EXTREMELY worried I would be chasing wires forever when mine went out.
 
#27 ·
Your welcome and I am sorry to hear that. Although let it "marinate" for a while and be certain it is the SWPS as others have reported the same problems with the wheel speed sensors and one other member also had his YAW sensor go out. Good luck getting her fixed, I drove mine for a while until it really started to pop up a lot.
 
#30 ·
Thank you. Someone else would have to answer that question though. I know the corvettes of our years are the same but I don't know about other Caddys. G/L.
 
#31 ·
This is a common problem on the TBSS/97x Aero. My girlfriend's SAAB does this same thing. What triggers it is the steering wheel not being straight when it was last turned off. So when you pull into a parking spot and leave the wheel turned the next startup will trigger that light and bug the crap out of you.
 
#36 ·
#34 ·
Well after having the car about a month a handful of times the engaged light came on the DIC. Then tonight for the first time the service stability came on and stayed on till I hit ok. Looks like I will be doing this as well I also heard it could be the YAW sensor but I have not seen any crazy readings on my g meter in the car.
 
#37 ·
Another bump for posting this. I've been getting the "service steering, stability and vehicle soon" warnings along with the abs, t/c and parking brake light all staying on when I start the car and sometimes mid drive. I'm hoping this is the culprit. I used this guide to put the new swps in tonight, which took about 1 1/2 hrs. Another set of hands helps. Upon first start I still got all the lights, but after one restart everything went off and stayed off for the test drive. We'll see tomorrow if its a fix. Thanks again!