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MikeB85
MikeB85, ASE Certified Technician
Category: Car
Satisfied Customers: 354
Experience:  ASE Certified, I-Car Trained and Certified, Automotive Technology Degree
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2000 pontiac bonneville ssei: stability..a clunking/grinding sound

Customer Question

I have a 2000 pontiac bonneville ssei. The service stability system light is coming on and it has now developed a clunking/grinding sound that sounds like it is coming from the axle shaft, where would I start diagnostically.
Submitted: 6 years ago.
Category: Car
Expert:  MikeB85 replied 6 years ago.

Hi there,

This light will display when the vehicle detects any faults that are present with the VSES (Vehicle Stability Enhancement System.) Since the light is on there will be a DTC (Diagnostic Trouble Code) stored in the vehicles pcm. This DTC will tell you where the fault is coming from. The first step would be to get the vehicle scanned with the appropriate scan tool so you can find out what the DTC is. With this code you can then make the proper diagnosis of the problem. It could possibly be an issue with a wheel speed sensor/wheel bearing assembly. Usually when a wheel bearing goes bad it will set a code because the wheel speed sensor and wheel bearing are one unit. Like I said though, get the vehicle scanned to see what DTC is coming up so you don't end up replacing unnecessary parts. I hope this helps. Please let me know if you have any questions. Thanks.

MikeB85, ASE Certified Technician
Category: Car
Satisfied Customers: 354
Experience: ASE Certified, I-Car Trained and Certified, Automotive Technology Degree
MikeB85 and 14 other Car Specialists are ready to help you
Customer: replied 6 years ago.
I guess I am asking for some possibilities that could be the problem. In the last year both front wheel bearings and tie rods have been replaced.
Expert:  MikeB85 replied 6 years ago.

I don't want to lead you in the wrong direction because there are over 50 related DTC's to this system. Like I said before without finding out exaclty what DTC turned the light on, you will only be guessing, which leads to wasted money and unnessary repairs. Just to give you an idea of how many possibilities you are dealing with here is the list of DTC's. AGAIN the first step would be to get the vehicle scanned.

  • DTC C1211 ABS Indicator Lamp Circuit Malfunction
  • DTC C1214 System Relay Contact or Coil Circuit Open
  • DTC C1217 Pump Motor Shorted to Ground
  • DTC C1222 RF Wheel Speed Sensor Input Signal is 0
  • DTC C1223 LR Wheel Speed Sensor Input Signal is 0
  • DTC C1224 RR Wheel Speed Sensor Input Signal is 0
  • DTC C1225 LF Excessive Wheel Speed Variation
  • DTC C1226 RF Excessive Wheel Speed Variation
  • DTC C1227 LR Excessive Wheel Speed Variation
  • DTC C1228 RR Excessive Wheel Speed Variation
  • DTC C1232 LF Wheel Speed Circuit Open or Shorted
  • DTC C1233 RF Wheel Speed Circuit Open or Shorted
  • DTC C1234 LR Wheel Speed Circuit Open or Shorted
  • DTC C1235 RR Wheel Speed Circuit Open or Shorted
  • DTC C1236 Low System Supply Voltage
  • DTC C1237 High System Supply Voltage
  • DTC C1238 Brake Thermal Model Exceeded (w/NW9)
  • DTC C1242 Pump Motor Circuit Open
  • DTC C1243 BPMV Pump Motor Stalled
  • DTC C1248 EBCM Turned the Red Brake Warning Indicator On
  • DTC C1254 Abnormal Shutdown Detected
  • DTC C1261 LF Inlet Valve Solenoid Malfunction
  • DTC C1262 LF Outlet Valve Solenoid Malfunction
  • DTC C1263 RF Inlet Valve Solenoid Malfunction
  • DTC C1264 RF Outlet Valve Solenoid Malfunction
  • DTC C1265 LR Inlet Valve Solenoid Malfunction
  • DTC C1266 LR Outlet Valve Solenoid Malfunction
  • DTC C1267 RR Inlet Valve Solenoid Malfunction
  • DTC C1268 RR Outlet Valve Solenoid Malfunction
  • DTC C1271 LF TCS Master Cylinder Isolation Valve Malfunction (w/NW9)
  • DTC C1272 LF TCS Prime Valve Malfunction (w/NW9)
  • DTC C1273 RF TCS Master Cylinder Isolation Valve Malfunction (w/NW9)
  • DTC C1274 RF TCS Prime Valve Malfunction (w/NW9)
  • DTC C1276 Delivered Torque Signal Circuit Malfunction (w/NW9)
  • DTC C1277 Requested Torque Signal Circuit Malfunction (w/NW9)
  • DTC C1278 TCS Temporarily Inhibited By PCM (w/NW9)
  • DTC C1281 VSES Sensors Uncorrelated (w/JL4)
  • DTC C1282 Yaw Rate Sensor Bias Circuit Malfunction (w/JL4)
  • DTC C1283 Excessive Time to Center Steering (w/JL4)
  • DTC C1284 Lateral Accelerometer Sensor Bias Malfunction (w/JL4)
  • DTC C1285 Lateral Accelerometer Sensor Circuit Malfunction (w/JL4)
  • DTC C1286 Steering Sensor Bias Malfunction (w/JL4)
  • DTC C1287 Steering Sensor Rate Malfunction (w/JL4)
  • DTC C1288 Steering Sensor Circuit Malfunction (w/JL4)
  • DTC C1291 Open Brake Lamp Switch Contacts During Deceleration (w/NW9)
  • DTC C1293 Code C1291 Set in Previous Ignition Cycle (w/NW9)
  • DTC C1294 Brake Lamp Switch Circuit Always Active (w/NW9)
  • DTC C1295 Brake Lamp Switch Circuit Open
  • DTC C1298 PCM Class 2 Serial Data Link Malfunction (w/NW9)
  • DTC C1221 LF Wheel Speed Sensor Input Signal is 0
  • DTC C1218 Pump Motor Circuit Shorted to Voltage or Motor Ground Open
  • DTC C1255 EBCM Internal Malfunction
  • DTC C1256 EBCM Internal Malfunction
  • Customer: replied 6 years ago.
    Thank you so much.
    Expert:  MikeB85 replied 6 years ago.
    Not a problem. Once you find out the DTC, let me know and I can assist you further. Thanks.

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