So I scored some rear struts off a 99 STS with 75k on it, installed them on my car (99 sts with 150k) and they work perfectly. BUT Now "service suspension, service stability system and service idle control" all pop up on my DIC. They never showed up until I installed the struts, I've checked and checked all the wiring, air lines ect.. all are fine. I'm hoping it's something simple if all of these popped up at one time, but I don't have a clue where to start, I've cleaned all ground locaions, unhooked the battery to reset everything, no change. Car is running fine (besides randomly blowing etc fuse?) Only codes are : C1721, C1722, C1782, P0550, P1520. All are history, but when I clear all the codes and take a drive they all come back and still pop up history. Any ideas? thanks for your help!
Installed "new" used rear struts and now more problems?
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Also forgot to mention (if it helps) it feels like the ABS is kicking in when I touch the brakes and sometimes ABS and TRACTION CONTROL lights will light up on the actual gauge cluster (not on the DIC) but they go away as soon as I shut the car off.
you may have brought a code on when you unpluged the old shocks have you cleared the codes ? it might just be something simple that did not clear on its own or is in the history
are the codes current did not see if you mentioned that
its possilbe for the shock itself to be bad with the F45 maybe an electrical problem in the shock perhaps
other then those im not sure of anything els that im aware of that could be wrong you said you checked the wireing perhaps just the plug perhaps went bad when you unpluged it did you try some electrical cleaner like MAF spray cleaner and just spray it on the Plug let it sit to dry for about 10 minutes then plug it back in
that usualy works when ever i get a code for the ABS
just dirt inside the plug itself
are the codes current did not see if you mentioned that
its possilbe for the shock itself to be bad with the F45 maybe an electrical problem in the shock perhaps
other then those im not sure of anything els that im aware of that could be wrong you said you checked the wireing perhaps just the plug perhaps went bad when you unpluged it did you try some electrical cleaner like MAF spray cleaner and just spray it on the Plug let it sit to dry for about 10 minutes then plug it back in
that usualy works when ever i get a code for the ABS
just dirt inside the plug itself
'14 ATS Premium with 3 pedals | Past: '13 ATS Performance & '99 Seville STS
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Do you have an electrical multimeter? unplug the strut harness and measure the resistance between two pins from strut side. The resistance should be between 9.5 to 15.5 ohms. If you observe open circuit condition, i.e. infinite resistance, or closed circuit condition, i.e. zero resistance, the internal inductor inside the strut is bad. Also test the both pins to see is any of them are grounded? To do this just measure the resistance between strut metal body and each pin individually. You should read infinite resistance. If the strut fails in one of the tests you have a bad strut. Also using your old strut and plugging them to see what happens to the codes is a very good idea too.
Their stock GM, and if I can find another set I will. Do the 2000+ devilles have the same ones? thats the only other car close to an sts in the junkyard.
i don't belive the Deville would have the same one cause i think the Seville SLS and STS where the only Cadillacs with the F45 option
perhaps the DTS model Deville had it but not sure
perhaps the DTS model Deville had it but not sure
Deville's are passive. All the DTS's ive seen are active. Was actualy surprised the 03 Deville that was just in my shop had passive.
ABS/Stabilitrack should not be affected by the shocks(plugs) unless you unplugged the wheel speed sensors when you changed them.
Pull the codes for more details. (ABS codes for ABS/Stabilitrack)
Also, ya 99 has stabilitrack, also pre-99 too. Not sure when it started, but 95-96-97's ive seen have it too.
ABS/Stabilitrack should not be affected by the shocks(plugs) unless you unplugged the wheel speed sensors when you changed them.
Pull the codes for more details. (ABS codes for ABS/Stabilitrack)
Also, ya 99 has stabilitrack, also pre-99 too. Not sure when it started, but 95-96-97's ive seen have it too.
you said original shocks had 150k miles but did not say if there were any issues with them. leaky, no lift, codes, wimpy damping? used parts with lower miles sounds good till you install them and codes pop up. OEM shocks are very pricey but you probably know that. what did you pay at boneyard?
My old ones had HUGE cracks in them that you could almost stick your finger into. I got a new air compressor (for the struts) and 2 struts for $30, so there was NO way I could'nt take them with me.
you got a used compressor also? was old one shot? thread started with "new shocks". you never mentioned bad compressor, leaky shocks. it sounded like your rear shocks were ok to start with and you found some nice used ones and now you have codes. maybe you should have said your rear was shot and put on some used parts to fix it.
oops haha, well The compressor kicked on sometimes, maybe like 3 times in the past 2 months so I put another used one off the same sts I got my struts off of and it works fine. Can the compressor throw codes too?
Did you replace anything else?
The C1782 is a code associated with the EBTCM and its specifically related to communications between the CVRSS module and the EBTCM and the struts should not be the source of the problem. The other two C1700 codes are relatd to the left rear strut, one is short to battery and one is open circuit. Sounds like you have a wiring issue, if its not the strut itself.
DTC C1782 ICCS2 DL Left Output Short CKT to Bat
Circuit Description
The CVRSS module estimates the road surface and communicates that information to the Electronic Brake and Traction Control Module (EBTCM) using the ICCS2 Datalink Left and Right Outputs. The EBTCM uses this information to provide improved rough-road braking performance.
Conditions for Setting the DTC
The DTC is set when the CVRSS module measures a feedback voltage greater than a preset threshold during an ICCS2 Datalink Left Output ON state.
The DTC turns HISTORY when the CVRSS module no longer senses a high feedback voltage during five (5) consecutive ICCS2 Datalink Left Output ON states.
Action Taken When the DTC Sets
* Both of the ICCS2 Datalink Outputs are set to default output states.
* The SERVICE RIDE CONTROL message will be displayed.
P0550 is a Power Steering Pressure Switch Circuit wiring problem.
P01520 is a transmission gear indicator circuit problem.
The C1782 is a code associated with the EBTCM and its specifically related to communications between the CVRSS module and the EBTCM and the struts should not be the source of the problem. The other two C1700 codes are relatd to the left rear strut, one is short to battery and one is open circuit. Sounds like you have a wiring issue, if its not the strut itself.
DTC C1782 ICCS2 DL Left Output Short CKT to Bat
Circuit Description
The CVRSS module estimates the road surface and communicates that information to the Electronic Brake and Traction Control Module (EBTCM) using the ICCS2 Datalink Left and Right Outputs. The EBTCM uses this information to provide improved rough-road braking performance.
Conditions for Setting the DTC
The DTC is set when the CVRSS module measures a feedback voltage greater than a preset threshold during an ICCS2 Datalink Left Output ON state.
The DTC turns HISTORY when the CVRSS module no longer senses a high feedback voltage during five (5) consecutive ICCS2 Datalink Left Output ON states.
Action Taken When the DTC Sets
* Both of the ICCS2 Datalink Outputs are set to default output states.
* The SERVICE RIDE CONTROL message will be displayed.
P0550 is a Power Steering Pressure Switch Circuit wiring problem.
P01520 is a transmission gear indicator circuit problem.
damn. haha. Is there any way of resetting the CVRSS? and resetting KAM?
UPDATE: I fixed a broken wire so the service suspension ordeal is gone, but now the whole thing with the TCS and ABS warning lights has gotten worse, My brakes sometimes randomly will feel like the abs is kicking in, and when taking off at a red light or stop sign my car thinks I have no traction and will almost feel like it's "bogging" down? So I'm no expert at this, but I assume this probly has something to do with the EBTCM? Current codes are:
C1255 - EBCM internal malfunction
U1064 - loss of communications with DIM
C1288 - steering sensor circuit malfunction
C1255 - EBCM internal malfunction
U1064 - loss of communications with DIM
C1288 - steering sensor circuit malfunction
its the abs controler, but a bad or shorted wire can cause the malfunction code. Clear em and see if they come back. Has it gotten wet from water/puddles or coolant or anything spilled on it? Its in the front behind the drivers side headlight.
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