Question about 2004 Buick LeSabre

1 Answer

2004 buick regal code P1887 (TCC switch) Where is the TCC switch

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 104 Answers

Code P1887, as you probably by now know, is set when there is an issue with the torque converter clutch engagement and disengagement. When this code is set, it inhibits TCC operation, could cause issues with the shift adaptive strategies and possibly issues with 4th gear (Overdrive) operation.

The unfortunate news is that you have the 4T65E transmission in this vehicle and the TCC switch/solenoid is part of the valve body and the valve body is on the side of the transmission (drivers side) and would require at least the lowering of the sub frame to get enough clearance to remove the side cover and to get to the valve body. It is really an involved repair and would not be for the faint of heart nor those with little to no mechanical experience.

I dont know where you are located, but if you are anywhere near Indiana I would visit www.grandprixforums.net and sign up there and post up your issue there. Its an online community for Grand Prix's and other vehicles that use the GM 3800 engine. There is a gentleman on there that goes by the screen name of Trannyman95 and he makes his living rebuilding 4T65E's among others and is highly regarded as a top notch transmission builder.

Posted on Jan 02, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

What are the probable causes of DTCs C1226, C1222, C1221, C1233, C1232, C1291, P1106, and P1887?


DTC C1221 LF Wheel Speed Sensor Input Signal is 0
C1222 RF Wheel Speed Sensor Input Signal is 0
DTC C1226 RF Excessive Wheel Speed Variation
DTC C1232 LF Wheel Speed Circuit Open or Shorted
DTC C1233 RF Wheel Speed Circuit Open or Shorted
DTC C1291 Open Brake Lamp Switch Contacts During Deceleration
DTC C1291 detects an open brake switch. The EBCM looks for deceleration rates that may indicate braking action. The EBCM verifies braking action by repeating the method for finding deceleration rates that indicate braking action several times. In each case, the ABS will not be available because the EBCM does not see the brake switch input.
DTC P1106 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
DTC P1887 TCC Release Switch Circuit (3.4L)
DTC P1887 TCC Release Switch Circuit (2.4L)
The torque converter clutch (TCC) release switch is part of the automatic transmission fluid pressure (TFP) manual valve position switch. The TFP manual valve position switch is mounted to the transmission valve body. The TCC release switch is normally-closed.
The switch signals the PCM that the TCC is released. This is accomplished by torque converter release fluid pressure acting on the switch contact, thus opening the switch. When the voltage is high on the circuit, the PCM recognizes that the TCC is no longer engaged.
When the PCM determines that the TCC release switch is open (indicating that the TCC is not applied) and the TCC slip speed indicates that the TCC is applied, then DTC P1887 sets. DTC P1887 is a type B DTC.
You have all kind of problems , I suggest you take this to a qualified ASE certified repair shop that has the diagnostic tools to trouble shoot an repair the vehicle . Electrical testing is a must with open circuits an shorts ,plus hooking up a scan tool that reads sensor data .Not just a code reader like at the parts store . This video he has a Chrysler vehicle ,doesn't matter . Test is the same for all make an models !

How to test digital ABS wheel speed sensor

Sep 21, 2015 | 1999 Pontiac Grand Am GT

1 Answer

.... Where is located the TCC switch circuit..?


In the transmission casing is the TCC, the circuit travels from the solenoid there through the casing and into the wiring harness nearest the transmission.

Jan 12, 2015 | Cars & Trucks

1 Answer

1996 Cavalier code P1887, Check engine comes on when cruising 60moh or faster. The car jerks and then resumes with no problems


the problem is the pump seal is leaking. there pretty common for that. the fix is to pull the side cover off, pull the pump off (like 8 bolts) and replace the seal. now the seal is apart of the bearing so you have to order the whole thing. its just pressed in there. and reassembly the side pan
code P1887 tcc clutch slipping , lost pressure by the front pump seal.
hope it helps

Apr 06, 2014 | 1996 Chevrolet Cavalier

1 Answer

Transmission will not go into overdrive


trans 440T4 you will have to see engine code
pcm act on code problems action like no tcc , no fourth it's a example
code first

Aug 03, 2013 | 1993 Buick Regal

2 Answers

Does not shift ,engine makes whining,rattling sound diagnostic code:0742 displays allfluid levels are topped off,oil,tranny,powersteering,radiator


it doesnt matter if the fluids are topped off?????????????? you need a tcc switch

Circuit Description
The TCC release switch is part of the automatic transmission fluid pressure (TFP) manual valve position switch. The TFP manual valve position switch is mounted to the transmission valve body.
The TCC release switch is a normally-closed switch. When the TCC is released, TCC release fluid pressure opens the TCC release switch which opens the TCC release pressure circuit. When the voltage on the circuit is high, switch open, the PCM recognizes that the TCC is no longer engaged.

If the PCM detects that the TCC release switch is closed when the TCC is commanded OFF, then DTC P0742 sets. DTC P0742 is a type B DTC.

DTC Descriptor
This diagnostic procedure supports the following DTC:

DTC P0742 Torque Converter Clutch (TCC) System - Stuck On

Conditions for Running the DTC
  • No TCC release switch DTC P1887.
  • No TCC PWM solenoid valve DTC P2761.
  • The engine speed is greater than 500 RPM for 5 seconds and not in fuel cut off.
  • The engine torque is 95 - 270 Nm (70 - 200 ft. lbs.) .
  • The TP indicated angle is 5-45 percent.
  • The transmission fluid temperature is between 20°C (68°F) and 130°C (266°F) .
  • The TCC is commanded OFF.
Conditions for Setting the DTC
The TCC release switch is closed 6 times for 4 seconds each, during one trip.

Action Taken When the DTC Sets

  • The PCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the conditions for setting the DTC are met.
  • The PCM commands maximum line pressure.
  • The PCM commands the TCC ON at maximum capacity.
  • The PCM freezes transmission adaptive functions.
  • 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 P0742 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 ignition switch is OFF long enough in order to power down the PCM.
Diagnostic Aids

Test Description
The numbers below refer to the step numbers on the diagnostic table.

  1. A Yes answer indicates that the TCC release switch is functioning properly.
  1. With the 20-way connector disconnected, the PCM should interpret the open circuit as TCC release pressure present.
  2. The TCC release switch is a normally closed switch and must be disconnected to properly test for a short to ground condition. An open condition in the TCC release circuit or switch would set DTC P1887. Open circuits are not diagnosed in DTC P0742.
  1. This step tests for a mechanical or hydraulic condition that would cause the TCC to be stuck ON.
' var HIGHmap133785047 = '' // --> Step 1 - Step 7

Mar 07, 2010 | 2006 Chevrolet Uplander

1 Answer

1996 chevy cavalier DIAGNOSTIC CODES


TCC is torque converter clutch circuit which helps tranny shift smoother and is in front off tranny.
$250
Random cyl miss. Most likely bad plug wire or faulty coil pack $45
Transmision pressure switch sends info to computer about tranny pressure and the switch controls it. $400

Aug 27, 2009 | 1996 Chevrolet Cavalier

1 Answer

1999 Buick Regal hesitation while driving


most likely it is not actually a misfire it is the overdrive/TCC solenoid kicking on and off, it is a common GM transmission issue

Nov 10, 2008 | 1999 Buick Regal

1 Answer

Eng light comes on and code 1887


The code P1887 is an indication of a malfunction with the TCC release switch.
The Torque Converter Clutch (TCC) release switch is part of the Automatic Transmission Fluid Pressure Manual Valve Position Switch (TFP Val. Position Sw.). The TFP Val. Position Sw. is mounted to the transmission valve body. The switch is normally-closed. The switch signals the Powertrain Control Module (PCM) that the TCC is released. This is accomplished by Torque Converter release fluid pressure acting on the switch contact, thus opening the switch. When the voltage is high on the circuit, the Powertrain Control Module recognizes that the TCC is no longer engaged.
When the PCM determines that the TCC release switch is open (indicating that the TCC is not applied) and the TCC slip speed indicates that the TCC is applied, then DTC P1887 sets.

Oct 04, 2008 | 1996 Chevrolet Cavalier

Not finding what you are looking for?
2004 Buick LeSabre Logo

821 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

63242 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21981 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...