My C1287 is caused bay a bad SWPS. C1288 seems to be the same issue

I'd be looking at replacing the SWPS.

 

I'm thinking this is what I might do monday night.. I had mentioned I thought it was a SWPS when i dropped it off.. they said no dice.. its the EBCM and +/- $2k and they would need a day or so to get the part..

looks like I may have been right.. anyone else have a similar situation1?!? is this a straightforward case of misdiagnoses?

 

So if I understand you correctly, you have reviewed the service manual procedure for troubleshooting C1288, and determined that the shop (using a tech II) to monitor the SWPS, made a wrong diagnosis.

What have you done to isolate the issue?

 

On my V, the service guy plugged in TECH II and banged on the column while turning the steering wheel from lock to lock and monitored the TECH II.

Turned out to be the YAW sensor which was giving out funny readings when he polled it.

The only reason why I equate your problem to my V is the Z has the same sensors.

Hope this helps.

 

thats the yaw rate sensor under the passenger seat correct?

 

1. Yes I have reviewed the service manual procedure which required the use of a tech II (which I dont have). So I went to the dealer and was going to have them fix it.. they diagnosed it (and charged me the hourly fee) as a bad EBCM and told me it would cost +/- $2,000 to fix!! I took it home, bought a new GM EBCM for +/- $800 put it in following the service manual install procedure and the same code came up..

so I would say I have done ALOT to determine the shop using a TECH II to monitor the SWPS made a wrong diagnosis that I had a bad EBCM..

I'm not one to jump the guy on calling a tech out.. The tech who works on my cars has been doing so for 10 years and has been the corvette tech at two dealerships (i've followed him to both).

He just missed the ball with this one... it happens!

now back on to the problem.. has anyone else had a misdiagnosis and solved it?

 

I don't know, the V has the yaw sensor under the center console between the seats.

Two bolts holding it down.

A hell of a lot easier to replace then the SWPS.

Also about three times the price (<$200.00)

 

I apologize, I missed post #20. I'm not sure what they will do, but I'd still be having a talk with the dealership and see if they are willing to pony up...you being a loyal customer and all. If not, you'll have to dig into the wiring schematics, and use a DMM to troubleshoot the problem yourself.

 

SWPS installed... and that was the problem... so far no more codes... hate that I bought a new EBCM for nothing.. but hey.. now I have a spare..

here are pix of the bad sensor.. see how the ink in the bottom of the sensor lifted (wore out).

 

Glad your ok now.

Sorry you had to find out after shelling out all that dough though

(You needed to be reminded of that huh?)

 

no...


oh well.. all done now.. and still cheaper than the dealer.. they would have charged +/- $2,000 for the EBCM guess then calle dme back to say there was something else ALSO wrong and changed me another $500.. so in the end I guess $770 < $2500

stick to your hunches on this one guys!

 

Thought that would be it

 

How much trouble was this install...got a link to the instructions

 

I shot ya a response to your PM.. its not to bad to do with patience and the right tools..


..oh yea.. and these step bby step instructions with pix on the forum really helps also... hehe

http://forums.corvetteforum.com/c5-t...on-sensor.html

hope that helps!

 

post for thread
http://forums.corvetteforum.com/c5-t...ode-c1288.html

All . Thanks for tutorials and live experience on servicing traction control plus. The internet is a wonderful place & you generous knowledge workers are invaluable..

My story :
My sister recently drove her '02 convertible from Atlanta to New Orleans without incident. Days later, she encountered a partially rain flooded street with a very rough railroad tracks crossing.
But no troubles till the next day : 2 trouble lights TCS & ABS and text message on the driver information panel.
A long-standing reputable Chevrolet Dealer reports going down the trouble shooting tree , concluding the EBCM must be replaced, cost $1472(more than sources in the thread) and alltogether $1725 with labour including another small unrelated fix.
I questioned the service manager by fone (from Chicago) and pointed out many of the checks & ideas mentioned in this forum / thread.
He maintains the service tech did all indicated checks / tests & it must be the EBCM. But reading Z06_BluByU last post 3-28-09 01:32 PM ,,, NOW I'm scared the dealer could be still wrong. So I insisted we keep the old EBCM . I think they forgave the core charge.. 7/01/09 PM .

I'm thinking if codes come back , they should buy back "their" new module put in our good one and solve the real problem, on their nickel.. We'll see today 7/02/09 when she gets the car back.
AND how did Z06_BluByU do after all ???

OH ! as I try to post this above, I see discussion on SWPS (steering wheel position sensor) failure and Yaw-pitch sensors also at fault ! YIKES ! Sadly complex electronic systems have more interactions than the harried car engineers can account for in the allotted schedules and
costs. I know , as I worked at a BIG OEM component / module supplier recently..

Cheers & many thanks , satern1
(yea I'm a Saturn Fan, Shift my own gears, change my own oil..Plastic bodies are forever ! )
7/2/09