1993 Suburban overheating

[quote:6c2f62532b="parkerscar"]I have a 1993 Chevy Suburban with a 350 and it has 210,000 milesI on it. I have replaced the thermostat, water pump, both the switch and sensor, radiator with radiator cap and a new clutch fan. It overheats only at idle or in stop and go traffic and peaks out at 240-250 degrees. But once I get moving it cools down to normal temp at 190-200 degrees. what is the normal operating temp for the Suburbans and what am I missing. What could it be. I don't know what else to fix on this truck???[/quote:6c2f62532b]

Remove the Stat don't worry about what the PCM is thinkiing/doing and road test it- Try bleeding it again

Do you actually hear boiling at radiator/reservoir.

[quote:835cb61306="rasmataz"][quote:835cb61306="parkerscar"]I have a 1993 Chevy Suburban with a 350 and it has 210,000 milesI on it. I have replaced the thermostat, water pump, both the switch and sensor, radiator with radiator cap and a new clutch fan. It overheats only at idle or in stop and go traffic and peaks out at 240-250 degrees. But once I get moving it cools down to normal temp at 190-200 degrees. what is the normal operating temp for the Suburbans and what am I missing. What could it be. I don't know what else to fix on this truck???[/quote:835cb61306]

Remove the Stat don't worry about what the PCM is thinkiing/doing and road test it- Try bleeding it again

Do you actually hear boiling at radiator/reservoir.[/quote:835cb61306]

If it sits at idle to long then yes it gets to its boiling point, and what do you mean by bleeding (getting all the air out)?