94 Jimmy stalls in reverse

Occasionally, on a cold morning, in my 1994 gmc jimmy SLT 4WD, i'd go into reverse and my truck will just shut off.

This doesnt happen very often, but I'm just curious what could be causing this?

Ok, let's start off with the basics.

Done a tuneup lately?

yeah... about 6 months ago.. spark plugs, rotor cap, pvc, air filter

Remove clean and reintall your IAC valve.