Here we go:

No problem with the ABS whatsoever. Mechanic thinks the low voltage to the system was causing the
OBDII reading.

Batteries in great shape. No need to replace batteries. Computer was causing anomalies.

#3 glow plug was bad...replaced.

Remote starter now works as normal...must have been tied to the glow plug problem.

Total Bill...$339.80

I can live with that.

Think about it. I expected a bill in the $1000 to $2000 range, with new ABS stuff, new batteries,
much more labor, etc. I would not have balked had that happened. But, the shop didn't take advantage
of the situation like they easily could have. I'd bet that if I'd taken it to a Chevy dealer, I'd be
looking at a bill of at least a couple thousand bucks. But, I'd have the satisfaction of knowing the
work had been done by union labor!