Stalling

[kaycee]

2001 5.3 Silverado truck was having a hard time starting about the first 5 seconds it would struggle to get idle on cold start. Noticed volt meter was weak at this time did a voltage test and pointed me to bad battery ,replaced battery.ONCE the volts got up to 14 it idles like it suppose to ,runs good rest of day.sometimes I come to stop light and it will almost die volts are up though. Changed plugs and wires starts better but still has the weak idle and at times and the cold starts are better not like it should be but better. Where do I look no engine light or codes truck runs great down the road and will start great after the first cold starts, fuel pump,bad ground, IAC solenoid don’t want to throw parts at it but that’s where I am at now. NEW fuel filter 2k miles and the pump has 10k