Car belt diagrams: car problems

Check engine lights gets on steady,and you notice TCC (torque converter clutch) getting stuck on/off or its getting very loose.

You get your car scanned and it shows error code P074
This problem is noticed by many Buick car users.
There is service bulletin released by company,in related to this problem.
Get this problem inspected by your dealer and get it repaired.

A/T - 4T65E Poor Performance/Harsh Shifts/DTC's Set

Incorrect Transmission Shifts, Poor Engine Performance, Harsh 1-2 Upshifts, Slips 1st and Reverse, Torque Converter Clutch (TCC) Stuck Off/On, DTCs P0757, P0741, P0742, P0730, P0756

(May 20, 2005) Models:
2001-2005 GM Passenger Cars with 4T65-E Automatic Transmission
2001-2005 Buick Rendezvous
2005 Buick Terraza
2001-2004 Chevrolet Venture
2005 Chevrolet Uplander
2001-2004 Oldsmobile Silhouette
2001-2005 Pontiac Aztek, Montana
2005 Saturn Relay

with 4T65-F Transmission (RPOs M15, MN3, MN7, M76)

This bulletin is being revised to include additional diagnostic information and clarify model usage. Please discard Corporate Bulletin Number 02-07-30-013D (Section 07 -- Transmission/Transaxle).

Condition

Some owners may comment on any one or more of the following conditions:

^	The SES lamp is illuminated.
^	The transmission slips.
^	The transmission does not shift correctly, is very difficult to get the vehicle to start moving or the engine lacks the power to move the vehicle.
^	Poor engine performance.

Cause

The most likely cause of the various conditions may be chips or debris:

^	All years--Pressure Reg. Valve (Bore 1) or Torque Signal Valve (Bore 4) stuck
^	On 2001-2002 vehicles, a plugged orifice on the case side of the spacer plate.
^	ON 2003-2005 vehicles, restricted movement of the 2-3 shift valves in the valve body.
^	On 2003-2005 vehicles, restricted movement of the 3-4 shift valves in the valve body.

Technician Diagnosis and Correction

^	The technician's road test reveals the vehicle launches in third or fourth gear (high RPM with slow vehicle acceleration).
^	On 2001-2002 vehicles, a DTC P0756 or P0757 may be stored.
^	On 2003-2005 vehicles, a DTC P0730, P0741, P0748 or P0757 may be stored.
^	Refer to the appropriate Service Information (SI) for additional Diagnostic Assistance.
^	With a Tech 2(R) connected to the vehicle, road test the vehicle and perform the following steps: If the above symptoms are present proceed with the following steps.
1.	With the valve body removed and on a workbench, carefully push the valve against spring pressure to check if the valve will snap back to the original position. Or for the valves seated in home position, use a small flat-bladed screwdriver and carefully pry the valve off its seat, quickly remove the screwdriver allowing the valve to return to its seat. If the valve does not snap back unencumbered, then the valve will need to be removed from the valve body.

2.Once the valve is removed, inspect for any scratching or scoring.
3.If any scratching or scoring is found, then the fingernail test will need to be performed. Important: It has been found that in most cases that the scratches are not severe enough to catch your fingernail.
4.Using your fingernail, move over any scratches to see if your nail will catch on the scratch or score.
- If your nail catches in the scratches, the valve will need to be replaced.
- If your nail does not catch in the scratches, continue with the next step.
6.Important: Clean the valve body with the machined side down so debris may escape.
7.Clean the valve and bore using brake cleaner.
8.Blow off with shop air.
9.To verify free movement of the valve, dip the valve into clean ATF and install the valve back into the appropriate bore. The valve should move freely. If the valve moves freely, in most cases the valve body will function properly when reinstalled.10.Reassemble and retest

This details will help.Thanks.

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For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

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The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

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Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

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Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

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How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

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How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

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How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

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car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

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Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

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PLEASE HELP.
MY CAR WILL NOT START.WHEN I TURN THE KEY ,THERE IS NO NOISE HEARD,NOT EVEN A CLICK.SOME TYPE OF NOISE WAS HEARD FROM STARTER AREA,WHEN THIS PROBLEM OCCURRED.
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OK.

You probably blew a fuse or burned up a fusible link somewhere down near the starter. The noise you mentioned can be problem, shorting the starter.Check the starter by connecting it directly.
Make sure the battery has a full charge, if the battery has no enough amps to crank the engine.Then also same problem will be noticed.But if battery shows proper 12 voltage then its not battery problem. If you burnt up wiring, the starter is got shorted. You can check the starter operation by jumping the solenoid terminal and the bigger power terminal together and see if it cranks. The key would need to be on to do this. ----------
This troubleshooting will help you to confirm the problem.

THANK YOU.
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For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

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