My 2004 Suburban recently started having an issue when cruise control is activated. As it starts up inclines and starts losing speed, it will shift down one gear as it should, then almost immediately shift down into the passing gear and stays there until it reaches its set speed. It really works the engine and transmission hard on long upgrades.
I can avoid it doing this by pressing the accelerator when I notice it decreasing speed and keeping it at a speed just under the set speed. It won't try to go into the low gear then.
I've watched a few You Tube videos about this and I've seen some suggest maybe it is the throttle position sensor. The videos I've watched, seem to make it look like a pretty simple job that I would be able to do myself.
I just don't want to assume this is the likely culprit and spend the money doing this and getting no benefit from it. Does anyone know of anything else that could be causing this?
I can avoid it doing this by pressing the accelerator when I notice it decreasing speed and keeping it at a speed just under the set speed. It won't try to go into the low gear then.
I've watched a few You Tube videos about this and I've seen some suggest maybe it is the throttle position sensor. The videos I've watched, seem to make it look like a pretty simple job that I would be able to do myself.
I just don't want to assume this is the likely culprit and spend the money doing this and getting no benefit from it. Does anyone know of anything else that could be causing this?
