B737-300
Flight Crew Last 90 Days 121; Flight Crew Type 6000
Situational Awareness
Inflight Event / Encounter CFTT / CFIT; Inflight Event / Encounter Weather / Turbulence
Flight Crew Became Reoriented; Flight Crew Executed Go Around / Missed Approach
Human Factors
Inside the FAF on a visual approach backed up with ILS to 31R. We were about 1800 [FT] with the autopilot engaged. It was intermittent light chop. We got a Pull Up warning light; with no aural alert. The Captain commanded a go-around; which we executed.  ATC gave us instructions to track inbound and climb to 2000 [FT].  We got vectors back on a right; downwind for 31R. We then got cleared for the Visual Approach to 31R again. This was hand flown backed up with the ILS to a normal landing.
B737-300 First Officer reported receiving a GPWS terrain warning on a night visual approach to DAL Runway 31R. A go-around was performed in response to the alert.