Hello and welcome to Just Answer!
Fault code P0753 is a fault code that sets when there is a problem with the o/d solenoid or circuit.
P1765 fault code does not apply to your transmission. You have a 46re trans and this code is only for a 45rfe transmission. Are you sure it was P1765?
P0753 is usually caused by a faulty o/d solenoid. The part number for the solenoid is 52118500AB.
This could also be caused by a wiring problem or PCM but it is not coomon. I would pull the pan off and check the resistance of the o/d solenoid and the tcc solenoid. The resistance should be around the 33 ohm mark on both. If you find the o/d solenoid reading is way off, then it will need one. The o/d and tcc solenoid are combined in one unit.
I would find out for sure what the other code was because it could be a governor code and when the pan is off you can deal with that also. P1765 doesn't apply to your truck and I would get them to scan it again for the correct code. Let me know, thanks! Richard
P01765 does not apply to you truck. I would get them to double check that before doing any repairs, then I can suggest what to do next. You could also try this, turn the key
ON - OFF - ON - OFF - ON within 5 seconds and watch the digital odometer and let me know what it says ans when it is done displaying codes it will display done.
That description fits the description for fault code P0753.
Do you have a test light and are able to test a few things for me?
Could you try the key cycle procedure and see what comes up?
First of all I need to know if it shifts ok! Does it start out in first gear and shift to second and third? Or does it only have third gear and reverse? If it only has third gear it will seem like it is lacking power.
Ok, thanks for that info. Don't replace the solenoid yet. We need to do some simple testing if you have a volt meter or a test light. I will help you test this if you could.
When the PCM sees a problem with the o/d solenoid circuit that could harm the transmission it turns off the relay that sends power to the transmission. This fault code could also be caused by the relay not being powered up. We need to remove the transmission relay in the power distribution center beside the battery. When you pull the cover off it will show you where the relay is located. Pull it out and check for power in the center on terminal 87 & 30. One should have power. Then start the truck and check for power on 85 & 86. One should have power. Here is a diagram that shows two different types of relays use the one that is the same as the one you pulled out.
If you have power to two terminals swap the relay with another relay like the horn or something and see if the trans shifts after. Let me know! Thanks, Richard