My truck was slamming into gears and 3rd and 4th felt weak. i decided to do a band adjustment and it made a big difference between shifting and lockup in O/D. it is recommended to do every 20000 miles on chrysler/dodge transmissions Try doing that, it could help and takes maybe 2 hours.

https://www.atsdiesel.com/additional...ent%20v1.0.pdf

Step by step process, fairly easy to do just need trans oil and gasket when done. Also find a torque wrench for 72 in. pounds.

 

Thanks to both of you. I will try checking the wiring fort then the bands. My next question is with this being my daily driver will driving easy hurt anything until weekend when I can get to it?!

 

You may be able to get away with driving it easy but I would avoid it if possible.

 

If you want you can take you oil to a transmission shop and tell them to check it. They can give you some input on what might be happening. But yea I wouldnt drive on it but if you do drive it like a grandpa. If you do the band adjustment let me know how it goes!

 

Thanks everyone for the advice. I ordered a new tcc external harness connector and pig tails

 

Well I replaced the connector on outside of transmission with little improvement. Still throwing p0743 code and the guy at advanced auto is sure the trans is done. Still lacks power, shifts are in the wrong spots, mileage is bad, and I hear the trans rattling. Probably have aamco look at it. Any ideas that might help?!

 

I think the torque converter took a crap. Does it only rattle at certain speed? My dads truck rattles horribly but he still plows and turns the radio up louder. but it's hard to diagnose anything over the Internet. Did you adjust the bands?

 

Well I replaced the connector on outside of transmission with little improvement. Still throwing p0743 code and the guy at advanced auto is sure the trans is done. Still lacks power, shifts are in the wrong spots, mileage is bad, and I hear the trans rattling. Probably have aamco look at it. Any ideas that might help?!

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No I didn't but will take to aamco to see what they say, I'm getting sick of the headache

 

Before you can condemn anything you need to fix that P1765 code. The other codes will be caused by that code. If you can not get 12 volts to the solenoids, they will not do anything. Do you have 12 volts down at the trans connector. Does your trans relay turn on? Is the transmission fuse good? Does it have 12 volts?

Once you get that in line you can look at other issues. With that problem, you will be running in limp mode. It will take off in 2nd gear and lack power and never make shifts. You will have reverse as it is a manual valve in the transmission.

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Here is the factory diagnostics for this code.
P-1765 TRANS 12 VOLT SUPPLY RELAY CTRL CIRCUIT

When Monitored and Set Condition:

P-1765 TRANS 12 VOLT SUPPLY RELAY CTRL CIRCUIT

When Monitored: Continuously with the Key on.

Set Condition: This code is set if the voltage detected on the Transmission Relay Control

Circuit at the PCM is different than the expected voltage for 3 seconds.

POSSIBLE CAUSES

GENERATOR SOURCE CIRCUIT OPEN

TRANS RELAY CONTROL CIRCUIT OPEN

TRANS RELAY CONTROL CIRCUIT SHORT TO GROUND

TRANS CONTROL RELAY WIRING HARNESS

POWERTRAIN CONTROL MODULE

TRANSMISSION CONTROL RELAY

TRANS CONTROL RELAY WIRING HARNESS INTERMITTENT

TEST ACTION APPLICABILITY

1 Ignition On, Engine Not Running.

Using the DRB, read the DTC's.

Is the DTC specific good trip displayed and equal to 0?

All

Yes ® Go To 2

No ® Go To 8

2 This code is present at this time.

Ignition On, Engine Not Running.

With the DRB, actuate the Transmission Control Relay.

Is the Transmission Control Relay clicking?

All

Yes ® Go To 8

No ® Go To 3

3 Ignition Off.

Disconnect the Transmission Control Relay.

Note: Check connectors - Clean/repair as necessary.

Ignition On, Engine Not Running.

With the DRB, actuate the Generator Field.

Using a Voltmeter, measure the voltage at the Generator Source Circuit in the Relay

Connector.

Is the voltage above 10.0 volts?

All

Yes ® Go To 4

No ® Repair the open Generator Source Circuit.

Perform Powertrain Verification Test VER-5A.

592

TRANSMISSION

TEST ACTION APPLICABILITY

4 Ignition Off.

Disconnect the Transmission Control Relay.

Disconnect the Powertrain Control Module White Connector.

Note: Check connectors - Clean/repair as necessary.

Using an Ohmmeter, measure the resistance of the Transmission Relay Control

Circuit from the Relay Connector to the PCM.

Is the resistance below 5.0 ohms?

All

Yes ® Go To 5

No ® Repair the open Transmission Relay Control Circuit.

Perform Powertrain Verification Test VER-5A.

5 Ignition Off.

Disconnect the Transmission Control Relay.

Disconnect the Powertrain Control Module White Connector.

Note: Check connectors - Clean/repair as necessary.

Using an Ohmmeter, measure the resistance between the Transmission Relay

Control Circuit and ground.

Is the resistance below 5.0 ohms?

All

Yes ® Repair the Transmission Relay Control Circuit for a short to

ground.

Perform Powertrain Verification Test VER-5A.

No ® Go To 6

6 Ignition Off.

Disconnect the Transmission Control Relay.

Note: Check connectors - Clean/repair as necessary.

Using an Ohmmeter, measure the resistance between Terminals 85 and 86 of the

Transmission Control Relay.

Is the resistance below 100.0 ohms?

All

Yes ® Go To 7

No ® Replace the Transmission Control Relay.

Perform Powertrain Verification Test VER-5A.

7 If there are no potential causes remaining.

View repair options.

All

Repair

Replace the Powertrain Control Module.

Perform Powertrain Verification Test VER-5A.

8 At this time, the condition required to set the code is not present.

Using the DRB, go to the freeze frame screen. Make sure the 9caused by DTC9 P code

matches the code on the DTC screen. Use this information to help determine the

conditions when the code was set.

Using the Schematic as a guide, inspect the Wiring and Connectors.

Were any problems found?

All

Yes ® Repair as necessary.

Perform Powertrain Verification Test VER-5A.

No ® Go To 9

593

TRANSMISSION

P-1765 TRANS 12 VOLT SUPPLY RELAY CTRL CIRCUIT - Continued

TEST ACTION APPLICABILITY

9 Ignition On, Engine Not Running

With the DRB, actuate the Transmission Control Relay.

While DRB is actuating, wiggle theWiring Harness from the Relay to the Powertrain

Control Module.

Did the wiggling interrupt the clicking?

All

Yes ® Repair as necessary where wiggling caused the clicking to be

interrupted.

Perform Powertrain Verification Test VER-5A.

No ® Visually inspect related Wire Harness Connectors & Harnesses.

Refer to any T.S.B.'s that may apply.

Perform Powertrain Verification Test VER-5A.

594

TRANSMISSION

P-1765 TRANS 12 VOLT SUPPLY RELAY CTRL CIRCUIT - Continued

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The other codes also have trans relay open as possible causes so I would chase this one. If you were near Bakersfield CA, I would be happy to help you with it.

 

I'm only pulling the p0743 code now