I have a 1993 Chevy 3/4 ton 4x4 with a 350, that stalls when braking. I can start it right back up and it is fine in park or neutral and runs fine at higher speeds. The problem used to be intermittent, but has now become constant. Also this only happens when the truck gets up to temperature. When it is cold it will not stall out when braking it runs fine.

I have changed the IAC Valve, TPS, TCC Solenoid, Fuel Pump Relay, Fuel Filter, Plugs, wires with not success of fixing the problem. Any help would be greatly appreciated.

 

Did you check for a vacume leak,if it only does it when braking

 

If it's not a vacuum leak at the intake manifold, this sounds like a problem with your power brakes vacuum booster.(That big drum directly behind your master cylinder, with the 1/2" hose leading to the intake manifold...)Possibly after 16 years it may need replacing.

 

check the brake switch to see if the torque convertor is unlocking .