<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by RV Roamer:
As bpe1 says, try moving it before deciding something is broken. It may well cure itself. However, most ABS systems run a set of self-diagnostics when the key is turned on and it is possible yours has detected a problem, such as the inability to get feedback from each wheel speed sensor. A brake technician can read a diagnostic code from the ABS computer to find out why the warning light came (on).
You need not fear total brake failure, though. The ABS light means the anti-lock feature may not operate, but you still have full braking capability. The coach is safe to drive in normal road conditions. <HR></BLOCKQUOTE>
Very well put, Gary! I agree 100%.
I had the same thing happening on my rig for awhile and found the light would go out and stay off after I started to drive (about 6 mph as bpe1 mentioned). Since I am a GM technician I plugged in the scan tool and found a history code for the L/R wheel speed sensor. I looked at the wiring and connections at the wheel and all appeared OK. I have a friend who used to work at a GMC dealer and he told me that there were some vehicles that left the factory without having their brake computers properly calibrated. There is a setup procedure that must be performed, using a scan tool, to assign the proper "Tire size calibration" in every new or replacement EBCM (Electronic Brake Control Module). I checked mine and it had NOT been calibrated. (This must be done with a GM scan tool linked to the ABS computer.) I calibrated my proper tire size into the computer and cleared the diagnostic code and the ABS light hasn't come back on since.
I imagine you'd not be able to do this yourself, but could ask your local WH dealer to check it.
Jim & Linda
'03 Winnebago Adventurer 35U (W22)
'06 Saturn Vue Toad