2001 gmc safari stalls when comming off the exit ramp on highway, around town it is fine. replaced mas air flow sensor and iac sensor. still stalling

two things from what I read is the tps sensor and iac valve

Clean throttle body,change fuel filter,could be crankshaft sensor.Air filter.

Fuel relays then the fuel pump.

Clean your Throttle body and pay attention to the Idle Air Control (IAC) valve passageway to try to clean the IAC. A dirty or faulty IAC will cause your engine to stall at idle, the job of the IAC is to open the passage way through the throttle body to regulate the amount of air to enter the engine to keep it from stalling when the Envoy is at idle.

Start with the simple and clean the throttle body and inspect any loose or damaged wire leads to the throttle body. Replace or repair any signs of damage.

Thank you for using Fixya and good luck.

Check your IAC motor (Idle Air Control) It could be sticking open.
Ps. Might be called Idle Speed Control motor it depends on the make and i forget what chevy calls theres.

check the fuel pressure comming in to the injector rail. it should be more than 20psi if not replace the fuel filter/
if that doesnt work replace the fuel pump.
is there a check engine light comming on?
if there is look at your mas air flow sensor located in the breather\
not sure where it is on this model

id check mas air flow sensor maybe 02 sensor might bet the mas sensor

maybe your iac valve is not working? it takes place of a choke or temp sender to computer could be bad which controls t I.A.C. known as the idle control valve,do you have any codes?

check your idle air control valve(IAC) its probably dirty and are not able to move freely
the IAC valve controls the air mixture at idol speeds

First thing to check is the fuel filter. It is likely getting clogged and starving the engine for fuel under heavy load.