Right on the top of the engine.
On a 2007 GMC Yukon, the throttle position sensor is typically located on the throttle body, which is found on the intake manifold. It is mounted directly on the throttle body assembly and measures the position of the throttle plate. You may need to remove the air intake duct for better access to the sensor. Always consult the vehicle's service manual for specific details and diagrams.
Right side of throttle body
On a 2003 GMC Yukon with a 6.0-liter engine, the throttle position sensor (TPS) is located on the throttle body, which is mounted on the intake manifold. It is typically found near the butterfly valve and is attached to the throttle body assembly. To access it, you may need to remove the air intake duct and any electrical connectors that may obstruct your view.
Throttal pedal. My 2003 Yukon would go into limp mode more that a couple times a day and I replaced the entire pedal assy. to fix this problem. Also I had bad wire connections at the throttalbodie.
IAT stands for the Intake Air temperature sensor. It is usually located in the air filter box or on the snorkle going to the throttle body
on a 5.3L it is behind the starter that must be removed first
Knock sensor for the GMC Yukon is beneth the intake manifold mounted to the cam cover.
Under the distributor cap.
It is located behind the intake on top of the engine. It is not the same thing as a Crankshaft Position sensor. Don't get the 2 confused. The Crankshaft position sensor is located behind the starter on the housing for the torque converter. The camshaft position sensor is harder to get at which is why many mechanics will try everything else before they check this sensor. In some cases the engine may have to be removed, especially if a unskilled mechanic tries to remove it and breaks it off. Make sure to use extreme care when removing it.
I have been having problems with finding the crankshaft sensor, what should i do or what can i do?
yes, under the rotor in the distributor
front of engine, behind the harmonic balancer