2000 Buick Regal 3 Lights but no codes

Hi Sue:
I wish I had a magic answer, but there really isn't one. It most likely has to deal with a sensor (abs) but I can't guarantee that. It will need to be seen by a mechanic that can go through several diagnostic procedures to pinpoint the problem. Are there any other shops that you can trust to look at it other than a dealer?

Joe

The cornering light problem is probably a bad socket.

The ABS and Trac Off lights are probably due to a fault with one of the front wheel speed sensors or wiring to the sensor. The wiring is prone to breaking inside the wire insulation near the lower control arms.

I am a GM Master Certified Tech. I am also a certified service writer and parts specialist. The individual you talked to at the dealer must be new at his job or just doesn't care about his customers. The service vehicle soon lamp is different from the service engine soon lamp. The service vehicle soon lamp will come on if there is a fault in the lighting system.(Headlamp, brake lamp, marker lamp, and so on) The EBCM will store DTC's for the ABS. Sometimes the codes will reset when the fault no longer exists.(When problem is gone, no code is present.) You can take the vehicle to Autozone, and they will scan for codes free of charge. Their equipment isn't as good as the dealer's, but it might tell us something.

XTooltipElement
Service Information
2000 Buick Regal | Century, Regal (VIN W) Service Manual | Brakes | Preliminary Information | Document ID: 1972678

#PIC4511: ABS Indicator On Intermittently - keywords brake DTC inr intermittent sensor wire - (May 17, 2007)

Subject: ABS indicator on intermittently

Models: 2000-2001 Chevrolet Impala/Monte Carlo

2000-2001 Buick Regal/Century

2000-2001 Pontiac Grand Prix

2000-2001 Oldsmobile Intrigue

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Some customers may comment on an Intermittent ABS light coming on.

Recommendation/Instructions:
Possible chafe to abs harness at the trunk pass-through cover just forward of the spare tire stowage. Inspect wire, including checking for water intrusion, repair wiring as necessary.

This is the same harness conduit that houses the fuel pump circuits.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© 2008 General Motors Corporation. All rights reserved.

See if this helps.

Here is another service bulletin.
XTooltipElement
Service Information
2000 Buick Regal | Century, Regal (VIN W) Service Manual | Brakes | Preliminary Information | Document ID: 1647526

#PIC3500: ABS Light On and Possible DTCs - keywords C1225 C1226 C1232 C1233 C1276 C1277 EBCM EBTCM electrical indicator MIL sensor speed - (Apr 14, 2005)

Subject: ABS Light On and Possible DTCs

Models: 1999-2004 Buick Century, Regal

2000-2004 Chevrolet Impala, Monte Carlo

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

Condition/Concern:
ABS light coming on and codes C1225, C1226, C1232, C1233, C1276 and/or C1277 are found in the EBCM. These codes may be current, but are usually stored as history codes.

Recommendation/Instructions:
Two areas of wire chaffing or rub through have been reported and verified. Both are near the left front corner of the engine compartment.

If the wheel speed sensor wires are tight where they pass under the front of the transmission side cover, chaffing can occur as the powertrain moves on its mounts. This can be seen best from under the vehicle or from within the left front wheel well.
At the air conditioner dryer canister the ABS harness splits. If this split is tight against the dryer canister bracket, the unprotected wires can chafe as the powertrain moves on its mounts. This can be easily seen from the top of the engine compartment, left front.
Correction: Repair any damaged wires and reroute in such a way as to prevent any further chaffing.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© 2008 General Motors Corporation. All rights reserved.

Save the picture and open it with paint or windows picture and fax viewer. The loop looking things are to show the wires are twisted together. All of the b terminal wires are reference and a terminals are signal wires.