abs delay when braking hard on Dodge Ram 1500

Average mileage: 124,750 (81,000–170,000)
3 model years affected: 1998, 1999, 2002
6 people reported this problem
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problem details
2002 Dodge Ram 1500 170,000 mi,
brakes are spongie at first. then they work just fine.
immediately following rear brake shoe replacement I noticed a delay in abs action following hard braking pressure. The delay is about 1 second during which there seems no braking at all, this after the brake initially grip, then seem to relax before abs kicks in. It is scary