ABS Motor

[vickiparks61]

My 12 Genny 3.8 has a C2402 code. It would appear that it needs a ABS motor. Is that the same thing as HECU? If I buy a used one will I need codes to program it? Has anyone done this ?

 

[mikec]

The ABS motor is part of the HECU so yes, you may need a replacement HECU. But first verify it isn't something less expensive like a wiring issue or blown fuse. Open the smaller fuse box in the engine compartment and look for 30 Amp fuses/fusible links, probably labeled "ABS-1" and "ABS-2." On 2009 models these are along the side wall opposite the electrical connector sockets. (I don't have 2012 service manuals!) Check them, wiggle them, take them out and re-seat them to make sure they are tight in their sockets.

Then look at the rather large electrical connector at the HECU - after disconnecting the main battery. Contaminated connections, breaking wires (critters chewing on them too), etc. can be the problem. The HECU is underneath the engine fuse box, it'll have half a dozen thin metal tubes/pipes (=brake lines) going in/out of it.

The 2009 service manual says the HECU "hardware" is common to all 2009 models but there is software that is model specific - engine size perhaps, other details about the vehicle. But not the VIN or other "keyed to this exact car only" stuff.

Once fixed, you have to clear the codes manually - they won't self-clear like many of the minor OBD-II errors.

Good luck.

mike c.

 

[vickiparks61]

Thanks for all your help. It is the HECU. I went to a different dealer and they are replacing the unit at no charge. Something that someone posted a few months ago about HECU failure and second owners qualifying for replacement. The service manager did not know about it but confirmed.