Question about Pontiac Grand Am

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My 1996 Grand Am. sets code P1864. Car will not shift into overdrive. I was told that the TCC solenoid is at fault. Where is the TCC solenoid located.

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It is located in the transmission under the valve body cover on the drivers side of the transmission. It is the solenoid on the bottom left hand side of the valve body. I had to take the suspension and frame support off and lower the transmission before I could remove to valve body cover. A retainer clip holds the TCC solenoid in place.


Thanks.

Posted on Mar 15, 2011

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Gm Code P0741


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there is a total of 27 diagnostic steps to follow, but here is some info for you:
SYMPTOM
P1740-TCC O/D SOL PERFORMANCE

WHEN MONITORED
The Torque Convertor Clutch (TCC) and Overdrive Clutch (O/D) will be tested each time the PCM requests TCC engagement in 3rd gear and O/D.

SET CONDITION
The code will set if the expected RPM drop is not achieved while attempting to engage TCC or O/D. This indicates a malfunctioning torque convertor or overdrive clutch.

POSSIBLE CAUSES
- Camshaft DTC present
- Engine RPM DTC present
- Fuel level low
- Misfire DTC present
- Output speed DTC present
- P1765 DTC present
- Park/Neutral DTC present
- PTO engaged (if equipped)
- Torque converter clutch DTC present
- TPS DTC present
- Transfer case in low range (if equipped)
- Transmission Relay DTC present
- Transmission temperature too cold
- Intermittent
- Check transmission fluid-debris
- Check transmission fluid-stall
- 3-4 Shift Solenoid
- Oil Pan contains excessive debris
- Shaft or seal damage
- TCC solenoid
- Torque converter
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My 2000 cadillac deville will not shift into overdrive. throws no codes. what could be wrong? thanks for your time.


Is it not shifting into overdrive or is the (TCC) torque convertor clutch not coming on? If it is and O/D concern it could be a cracked shift solenoid, this will not set a code because the PCM only monitors electrical failures with solenoids. If it is a TCC concern the PCM should set a code related to a comparison between vehicle speed and engine RPM. Should. You need to have somebody access the on-board diagnostic program to diagnose the problem.

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If you have the 4.0 engine the "shift solenoid" is for overdrive and also one for tcc ingagement.There is however a govenor pressure solenoid and sensor that will affect shifting.If you have a v-8 engine then you have a solenoid block that contains all 6 solenoids for the transmission in one package and is mounted on the top of valve body inside the transmission.If you can tell me what the diagnostic codes and symptoms are I may can help you fix it without buying expensive parts you dont need.

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1 Answer

Error codes


Her is the definition and a list of possiable causes.


Code P1740-Torque converter clutch did not lock up when the PCM sent the command. Enabling conditions: No engine or transmissions codes are present, vehicle speed was under 70 MPH, TPS was under 33% open. When the PCM commanded the torque converter to lock, no change was detected in engine speed. Blocking action: This code can block the following monitors: none.
Testing: Check torque converter solenoid for proper operation.
P1740 TCC O/D SOL PERFORMANCE (GAS)
Theory of Operation
The Torque Converter Clutch (TCC) Solenoid is used to engage the TCC which improves fuel economy.
When Monitored
The Torque Convertor Clutch (TCC) and Overdrive Clutch (OD) will be tested each time the PCM requests TCC engagement in 3rd gear and OD.
Set Condition
The DTC will set if the expected RPM drop is not achieved while attempting to engage TCC or OD. This indicates a malfunctioning torque convertor or overdrive clutch.
Possible Causes
* ENGINE DTCS PRESENT
* TRANSMISSION DTCS PRESENT
* TRANSMISSION TEMPERATURE TOO COLD
* OIL PAN CONTAINS EXCESSIVE DEBRIS
* 3-4 SHIFT SOLENOID
* SHAFT OR SEAL DAMAGE
* TCC SOLENOID
* TORQUE CONVERTER

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