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Discussion Starter #1
Hey everyone my truck has been taking a bit to shift into 2nd gear and recently my truck has been throwing the p0752 dtc. In the obd 2 code list it says P0752 Shift Solenoid A Stuck On. is that why my truck is shifting funny...what is a solution for this problem.... Thanks...Jim
 

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Discussion Starter #3
allready got that thanks....has anybody else had this code come up?
 

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Discussion Starter #5
Its all good...that is where i got the explanation from econobarn... just waiting for someone to elaborate on the code
 

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Circuit Description
The 1-2 shift solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves. The 1-2 SS valve is a normally-open exhaust valve that is used with the 2-3 SS valve, in order to allow 4 different shifting combinations.

When the powertrain control module (PCM) detects a 1-1-4-4 shift pattern, then DTC P0752 sets. DTC P0752 is a type B DTC.

DTC Descriptor
This diagnostic procedure supports the following DTC:

DTC P0752 1-2 Shift Solenoid Valve Performance - No Second or Third Gear

Conditions for Running the DTC
No vehicle speed sensor (VSS) DTCs P0502 or P0503.
No 1-2 SS valve DTC P0973 or P0974.
No 2-3 SS valve DTC P0976 or P0977.
No 3-2 SS valve DTC P0787 or P0788.
No transmission fluid pressure (TFP) manual valve position switch DTC P1810, P1815 or P1816.
The engine speed is greater than 475 RPM for 5 seconds.
The engine is not in fuel cutoff.
The gear range is D4, D3, D2, D1.
The throttle position (TP) angle is greater than 10 percent.
The transmission fluid temperature is 20-130°C (68-266°F).
Conditions for Setting the DTC
DTC P0752 sets if both of the following conditions occur twice:

Condition 1
The PCM commands second gear for 1 second.
The estimated gear ratio is 3.0-3.3.
The engine torque is 55-550 N·m (40-405 lb ft).
All conditions are met for 2 seconds.
Condition 2
The PCM commands third gear for 1 second.
The estimated gear ratio is 0.65-0.9.
The engine torque is 55-550 N·m (40-405 lb ft).
All conditions are met for 2 seconds.
Action Taken When the DTC Sets
The PCM illuminates the malfunction indicator lamp (MIL).
The PCM commands D2 line pressure.
The PCM inhibits 3-2 downshifts if the vehicle speed is greater than 48 km/h (30 mph) or greater.
The PCM inhibits fourth gear in Hot Mode.
The PCM freezes transmission adaptive functions from being updated.
The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure Records.
The PCM stores DTC P0752 in PCM history.
Conditions for Clearing the MIL/DTC
The PCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
A scan tool can clear the MIL/DTC.
The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring.
The PCM cancels the DTC default actions when the fault no longer exists and/or the ignition switch is OFF long enough in order to power down the PCM.
 

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Basically you have a problem with your tranny's hydraulic system, most likely a bad shift solenoid. Youll need to have the pan and valve body removed to replace the shift solenoid.
 
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