abs and brake light

I have 2006 silverado 1500 LT V8 Ext Cab. Bought new 02/06. Since new about every 3 months the brake and ABS lights on dash come on briefly. I will be driving along and hear 1 or 2 chimes and when I look at dash the brake and ABS lights are just going off. Told dealer in 08/06 they said there was nothing in computer and they would have to see it happen. When in for service 10/07 told dealer about it again. It happened on labor day weekend 07. They said there was a bulliten about a bad ground. They cleaned and reatached a ground said that should solve problem. I was driving on 12/20/07 when I heard 3 chimes looked at dash, brake and ABS light were on and went right off. Truck runs great and brakes seem fine. Any ideas would be appreciated. Thank You Jim

I have 2006 silverado 1500 LT V8 Ext Cab. Bought new 02/06. Since new about every 3 months the brake and ABS lights on dash come on briefly. I will be driving along and hear 1 or 2 chimes and when I look at dash the brake and ABS lights are just going off. Told dealer in 08/06 they said there was nothing in computer and they would have to see it happen. When in for service 10/07 told dealer about it again. It happened on labor day weekend 07. They said there was a bulliten about a bad ground. They cleaned and reatached a ground said that should solve problem. I was driving on 12/20/07 when I heard 3 chimes looked at dash, brake and ABS light were on and went right off. Truck runs great and brakes seem fine. Any ideas would be appreciated. Thank You Jim
this problem sounds like defective speed sensor have them replace sensors. when replacing sensors they probably will find the problem. dealers donot like to troubleshoot electrical problems under warrantee. but when theres no warrantee they will replace and troubleshoot everything.....goodluck! also they will not find out where the problem is in the computer they have to remove componets and examine for defects.

When I had my truck in for the sensor recall I think they just hooked the truck up to the scanner and checked the sensor output. They might have spun the front wheels...I don't know because I wasn't allowed back in the shop to watch. I had previously checked the output of each sensor with a VOM and I knew which one was low on output. Couldn't the dealer do the same thing with jamesp61 '06?

I have 2006 silverado 1500 LT V8 Ext Cab. Bought new 02/06. Since new about every 3 months the brake and ABS lights on dash come on briefly. I will be driving along and hear 1 or 2 chimes and when I look at dash the brake and ABS lights are just going off. Told dealer in 08/06 they said there was nothing in computer and they would have to see it happen. When in for service 10/07 told dealer about it again. It happened on labor day weekend 07. They said there was a bulliten about a bad ground. They cleaned and reatached a ground said that should solve problem. I was driving on 12/20/07 when I heard 3 chimes looked at dash, brake and ABS light were on and went right off. Truck runs great and brakes seem fine. Any ideas would be appreciated. Thank You Jim


Sometimes ABS codes clear thereself when you shut the engine off.
If it comes on again take it to the dealer before you shut the engine off and tell the to have at it.
Good Luck
MT

When I had my truck in for the sensor recall I think they just hooked the truck up to the scanner and checked the sensor output. They might have spun the front wheels...I don't know because I wasn't allowed back in the shop to watch. I had previously checked the output of each sensor with a VOM and I knew which one was low on output. Couldn't the dealer do the same thing with jamesp61 '06?
sonny01 is correct this is the proceedure. this is how it is explained in the manual and TSB. computer will not show where problem is...........

Here is the procedure to test the sensors yourself:
Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface) #03-05-25-007 - (09/29/2003)
Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface)
2002-2004 Cadillac Escalade, Escalade EXT
2003-2004 Cadillac Escalade ESV
1999-2004 Chevrolet Silverado
2001-2004 Chevrolet Suburban, Tahoe
2002-2004 Chevrolet Avalanche
2003-2004 Chevrolet Express
1999-2004 GMC Sierra
2001-2004 GMC Yukon, Yukon XL
2003-2004 GMC Savana
2003-2004 HUMMER H2
Condition
Some customers may comment on ABS activation at low speeds, usually below 8 km/h (5 mph). Upon investigation, the technician will find no DTCs set.
Cause
The cause of this condition may be an increased air gap between the wheel speed sensor and the hub reluctor ring due to rust and debris built up on the sensor mounting surface.
Correction
Measure AC voltage and clean the wheel speed sensor mounting surfaces.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Manual (SI Document ID #899664).
Disconnect both the front wheel speed sensor (WSS) connectors at the frame and harness.
Place a Digital Volt Meter (DVM) across the terminals of each WSS connector.
Rotate the wheel clockwise approximately one revolution per second. The minimum reading should be at least 350 ACmV's. If the reading is less than 350 ACmV's, remove the wheel speed sensor. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual. Plug the WSS bore in order to prevent debris from falling into the hub during service.
Clean the WSS mounting surface on the hub to remove any rust or corrosion using a wire brush, or equivalent.
Important
Make sure that the sensor sits flat on the hub. Check the sensor flange against a straight edge to ensure flatness. If the sensor flange is distorted, replace the sensor.
Apply a thin layer of bearing grease to the hub surface and sensor O-ring prior to sensor installation. Use ONLY Wheel Bearing Lubricant, P/N 01051344 (Canadian P/N 993037).
Install either the original sensor or a new one in the hub. Ensure that the sensor is seated flush against the hub. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual.
Place the DVM across the sensor terminals and recheck the voltage while rotating the wheel. The voltage should now read at least 350 ACmV's.