Question about 1999 Chevrolet Silverado 1500

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Transmission not going into overdrive

It appears the transmission is not going into overdrive. I have counted the shifts from a dead stop and I only count three. There appears to be a "hum" and a slight vibration that seems to be under the break pedal. I have tried to press the Tow/Haul button and the indicator comes on but the transmission does not appear to drop down one gear. Any Thoughts?

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Check the modulator valve on top of the transmission, when this goes out, it usually will not go into overdrive.

Posted on Aug 07, 2008

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1996 honda accord wont shift into overdrive


For Automatic transmission problem,click the link below:----Overdrive light in the dash blinks? http://repairhelpcenter.blogspot.com/2012/01/overdrive-light-in-dash-blinks.html
--------- Automatic transmission troubleshooting:----

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html

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http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html

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AUTOMATIC TRANSMISSION FLUID LEVEL? --

http://schematicsdiagram.blogspot.com/2011/07/how-to-check-automatic-transmission.html

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AUTOMATIC TRANSMISSION FLUID AND FILTER?

http://schematicsdiagram.blogspot.com/2011/07/how-to-change-automatic-transmission.html

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Transmission fault light on car dash?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fault-light-on-car-dash.html

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Transmission shifting problem?

http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html

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OD light flashing and transmission fluid leaking?

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Why Transmission fluid leaks near radiator?

http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html

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This will help.

Thanks.

Mar 04, 2012 | 1996 Honda Accord

1 Answer

HAVE A 1989 FORD F-150 WITH AUTO TRANS THAT YOU CAN'T SHIFT OUT OF THE "PARK" POSITION AT THE STEERING COLUMN. THE TRANY CAN BE SHIFTED AT THE TRANS WHEN LINKAGE IS DICONNECTED.I THINK THE...


What trans? AOD? This is 1992 F Series, all I have.

Shift Controls, Automatic Transmission The transmission shift control linkage or cable transfers the transmission operating mode from the selector lever to the transmission. The indicated transmission position on the steering column is transferred to a shift lever on the bottom of the steering column. On vehicles equipped with cable-operated shift systems, the indicated position of the transmission selector lever is transferred to the transmission through the shift cane, then to the cable, and down to the transmission manual shift lever at the transmission. On vehicles equipped with shift rod assemblies, the rod transfers the indicated transmission selector level position through a bell crank assembly to a control rod. The control rod transfers the indicated position to the transmission assembly.
----------------------------------------------
Automatic Transmission Manual Linkage Adjustments
  1. With the engine stopped and the parking brake applied, place the transmission selector lever at the steering column in the D (DRIVE position) for C6 applications and in the (D) (OVERDRIVE position) for AOD and E4OD applications, and hold against the D or (D) stop by applying a three-pound force to the selector lever knob.
  1. Loosen the shift rod adjusting nut at point A. Refer to the following illustrations.
  1. Shift the manual lever at the transmission into the (D) (overdrive) position for E4OD, by moving the lever all the way rearward, then forward two detents.
  1. With the selector lever and transmission manual lever in the(D) position, tighten the nut at point A to 17-24 Nm (12-18 ft-lb) torque. Use care to prevent motion between the stud and rod.
  1. Remove the three-pound force from the steering column selector lever knob.
  1. Operate the shift lever in all positions to make certain that the manual lever at the transmission is in full detent in all gear ranges. Re-adjust the linkage if required.
  1. On F-Super Duty Chassis Cab and Motorhome and Commercial Chassis recheck for correct operation of the automatic transmission selector indicator (PRN(D)21). Refer to Section 11-04A, Steering Column, Shift Rod Within Tube. ani_caut.gif CAUTION: Under no circumstances will it be permissible to adjust linkage in any position other than the(D) position for E4OD applications.
---------------------
Automatic Transmission Shift Cable Adjustment
  1. From inside the vehicle, place the column shift select lever in the DRIVE position (C6) of the OVERDRIVE (AOD and E4OD). Hang a three-pound weight on the selector lever.
  1. Raise vehicle on a hoist.
  1. Remove the shift cable from the transmission lever ball stud.
  1. Pull down the lock tab on the shift cable body.
  1. Position the transmission shift lever in the DRIVE position (C6) or the OVERDRIVE position (AOD and E4OD). This is three detents from the front-most lever position with the first position counting as one.
  1. Connect the cable end fitting to the transmission lever ball stud.
  1. Push up on the lock tab to lock the cable in the correctly adjusted position.
  1. Lower vehicle down from hoist and remove the three-pound weight from the column shift select lever.
  1. After making the adjustment, check for park engagement. Check the transmission control lever in all detent positions with the engine running to make sure correct detent/transmission actions. Readjust if necessary.

Jun 21, 2011 | Ford F-150 Cars & Trucks

1 Answer

Transmission shifts between overdrive and third at


When the trans is cold it will shift almost normal as of now. If you keep driving it it will eventually slip when its cold. This is caused by worn out clutch plates
Your trans needs to be overhauled with a clutch rebuild kit

Apr 10, 2010 | 2001 Jeep Cherokee

2 Answers

My 2002 trailblazer is making a noise when I go over 45 mph and appears to not be going in gear quickly at that speed


Check your transmission fluid level and/or have the fluid changed. If problem persist have a transmission professional at a dealership or transmission shop service it.

Sep 14, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

1996 ford contour transmission range sensor


Transmission range sensor and neutral safety switch are the same thing (when you go to buy the part). It's at the top of your transmission. You'll see the shifting cable connected to it. Here are the instructions for adjustment:
Shift Control Linkage
The transmission shift linkage adjustments must be performed in the order in which they appear.

Column Shift

Place transaxle range selector lever in (D) (OVERDRIVE) position or D (DRIVE) position on vehicles equipped with a transmission control switch (TCS). A weight of 1.4 kg (3 lb) should be hung on the transaxle range selector lever to ensure the lever is located firmly on the (D) (OVERDRIVE) or D (DRIVE) position on vehicles equipped with a transmission control switch (TCS) detent.

Loosen manual control lever-to-control cable retaining nut.

Move transaxle manual control lever to OVERDRIVE position or D (DRIVE) position on vehicles equipped with a transmission control switch (TCS), second detent from most rearward position.

Tighten retaining nut to 17-23 Nm (13-17 lb-ft). Check operation of transaxle in each transmission range position. Make sure that park mechanism and transmission range (TR) sensor are functioning properly.

Floor Shift

Position transaxle range selector lever in DRIVE position against rearward stop. The floor transaxle range selector lever must be held in the rearward position using a constant force of 1.4 kg (3 lb) while linkage is being adjusted.

Loosen manual control lever-to-control cable retaining nut.

Move transaxle manual control lever to DRIVE position, second detent from most rearward position.

Tighten retaining nut to 17-23 Nm (13-17 lb-ft).

Check operation of transaxle in each transmission range position. Make sure that park mechanism and transmission range (TR) sensor are functioning properly.



To take it off, it's a couple of retaining bolts and a wiring harness.

Jun 28, 2009 | 2000 Ford Contour

1 Answer

No overdrive


this is a hard mechanical fault in the overdrive forward clutch, u must overhaul the trans to fix this.

Jun 18, 2009 | 2000 Mitsubishi Galant

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1992 Mitsubishi Eclipse transmission slips in overdrive


well the low cost way to go first would be to try and change the trans fluids. If the problems still remains the it may be an internal problem

Feb 25, 2009 | 1992 Mitsubishi Eclipse

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