Question about 1997 GMC Sierra

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Automatic Transmission shifts hard from first to second gear. Is it the shift solenoid?

Wondering if the problem is in the valve body. The rest of the gears shift fine.

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  • 66 Answers

Put some transmission conditioner in and run for awhile, could be a sticking spool in the valve body from shellac buildup.

Posted on Jan 18, 2013

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Posted on Jan 02, 2017

emissionwiz
  • 75077 Answers

SOURCE: 97 gmc pickup with automatic transmission trouble

1st thing to do is test the system for codes, the problem is most likely a failed or stuck shift solenoid indside the trans, have you ever serviced the trans, sometimes a fluid and filter cahnge will cure these kinds of issues.

Posted on Nov 02, 2008

  • 217 Answers

SOURCE: Trasmission slippage

the trans will have to come out to be torn down and looked at

Posted on Jan 18, 2009

  • 295 Answers

SOURCE: 2001 Yukon XL SLT 4 speed Auto Transmission shift problem!

Sam,

I would start with a transmission fliud and filter service.

I would then have the trasnmission checked out by a transmission shop. The transmission most of the time has the direct drum band is starting to go. The shops can rebuild it no problem, This is a very common failure wiith the trasnmission.

Good Luck

Posted on Aug 16, 2009

Testimonial: "Thanks alot richtko94'! I'll try that!"

outdoorsman5
  • 631 Answers

SOURCE: GMC 1500 Auto, will not shift back into park?

Climb under your pickup and look where the cable connects to the side of the transmission and make sure there is not any mud around the cable or around the shift linkage hookup. If so clean it off and see if it will shift. We have found many of these with mud caked around the shift linkage or a lot of ice buildup and wont allow it to shift into park.

Posted on Dec 11, 2009

  • 4 Answers

SOURCE: 1997 transmission Slow Acceleration

not sure if this is the answer yet but i have the same problem with the same codes i work at an auto parts store and a few of the techs that are customers have lead me in the direction of changing the ignition switch, i am doing it today will let you know if it solves the problem

Posted on Jan 27, 2010

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1998 pontiac sunfire auto shift control solonoide lacated


What are you talking about auto shift control solenoid ? Which transmission does yours have ?
Automatic Transaxle - 3T40 Automatic Transaxle - 4T40-E
1-2 Shift Solenoid Valve
In transmission valve body
Transmission Component Location
Automatic Transmission Internal Connector End Views
2-3 Shift Solenoid Valve
In transmission valve body
Is there a DTC - diagnostic trouble code stored ? Which gear or gears are not working ?

Jul 07, 2016 | Pontiac Cars & Trucks

Tip

My car does not shift in second gear.


Hi.

The first thing to do is replacing the transmission fluid. Metal debris inside the transmission box gets mixed with fluid and can cause similar problems.

The automatic transmission uses throttle position sensor to determine position and opening of throttle.
IF throttle position sensor is defective, the car may have problems shifting into one or more gears.

The automatic transmission is controlled by an electronic control module, that is energizing a set of solenoids to shift into gears.
The control module is a rectangular box, often located behind the dash and wired to transmission. The solenoids are attached to valve body,inside transmission.

If a solenoid is defective, or if control module is defective, the car may have problems shifting into one or more gears.

Problems concerning transmission control module, TPS and transmission solenoid are usually detectable reading fault codes stored on the car main control module (ECU/ECM).

Transmission problems are often returning a code p0700 after an OBDII scan.

Stored codes can be retrieved using an OBD scan reader.
If the car auto transmission is not shifting into gear, talk to the mechanic about the problem.
Only when the car has a really high mileage, or when there is a factory problem there is need to replace the gearbox.
A damaged gear box at low mileage is rather unusual.

on Oct 23, 2009 | 1988 Jeep Cherokee

1 Answer

2001vw beetle automatic transmission is not shifting.


Sounds like a shift solenoid . See if you can order them separate from the valve body. I would call a vw dealer and talk with the service department.

Nov 07, 2013 | Cars & Trucks

1 Answer

Electronic pressure control solenoid circuit p1745. Check engine light on 2000 ford escort, 4cl, automatic. Advance auto told me it was a dealer part but I can't find it on any of the ford websites?...


Here is what the service manual says about the EPC solenoid, the processor looks at allot of different inputs to command the solenoids, such as Throttle Position Sensor, Vehicle Speed Sensors, Transmission Range Sensor and RPM signal, The PCM controls the shift patterns for the transmission. Electronic Pressure Control (EPC) Solenoid
The electronic pressure control (EPC) solenoid is located on the main control valve body and is controlled by the PCM. The EPC controls line pressure used to apply and release clutches and bands in the transmission.
The 2-3 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 2-3 shift solenoid activates the 2-3 shift valve which controls the automatic shifting between second and third gear. Second gear is established when the 2-3 shift solenoid is switched on. The 2-3 shift solenoid is switched off when vehicle speed increases and requires a second to third gear upshift.
The 3-4 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 3-4 shift solenoid activates the 3-4 shift valve which controls the automatic shifting between third and fourth gear. Third gear is established when the 3-4 solenoid is switched off. The 3-4 shift solenoid is switched on when vehicle speed increases and requires a third to fourth gear upshift.

Mar 23, 2013 | Cars & Trucks

1 Answer

1993 ford escort wagon with automatic transmission, it will not shift into the two higher gears it only has first gear.


Hi.

There are several things to check.

1) Check transmission fluid level.
2) Make sure that transmission is not in limp mode. That will restrict use of transmission to low gears. Go to the nearest car dealer and do a code scanning.If there are codes stored troubleshoot the codes.
3) Check if brake lights are working. Check brakes switch. The transmission shift lock may be on.
4) Check the TPS. The throttle position sensor is located on the throttle body The sensor detects the opening of the throttle, its output is used by the transmission control module to determine when to shift gears. The TPS is basically a variable resistor mounted on the throttle body. The TPS is tested by reading volts while operating the pedal. Making sure that voltage is in range and that there are no gaps or spikes in voltage changing while the pedal gets pressed slowly and smoothly.
5) Test the transmission switch solenoids. The higher gears solenoids may be defective. The solenoids are part of a pack located on the valve body in the transmission. The solenoids are tested reading Ohms at their terminal.
6) If you do not find anything else check wiring to transmission control module located under the dash. Make sure you did a code scanning.
7) Look for mechanical problems (clutch, valve, gears) inside the transmission.

On automatic transmission problems see also: My car does not shift..

Regards.

Ginko

Ginko.

Sep 07, 2011 | Ford Escort Cars & Trucks

2 Answers

What are the automatic transmission problem codes PO 751, PO 761, PO 734 indicate


PO 734 GEAR 4 INCORRECT RATIO
PO 751 SHIFT SOLENOID A PERF OR STUCK OFF
PO 761 SHIFT SOLENOID C PERF OR STUCK OFF

Jul 05, 2011 | Ford Focus Cars & Trucks

1 Answer

OK i have seen my question asked several different times on here, and have seen several different answers, from a simple electrical problem to a complete transmission rebuild. 1997 Chevrolet S-10...


if you have a modulator valve on your tranny it may be bad,the vacum could be restricted on it,the mod. valve controls shifts smoothly.lucas trans. additive helps with stuck valves in trannys,

Aug 12, 2010 | 1997 Chevrolet Blazer

1 Answer

2000 saturn sL2 1.9 twin cam 4 speed automatic transmission the transmission bangs and shifts hard the more gas you give it the harder it shifts i have changed the filter and fluid and it still does the...


The valve body inside of the transmissions on these get warped and makes the valves stick and then bang into gear. Remanufactured valve bodies usually run $450+ plus install.

May 17, 2010 | Cars & Trucks

1 Answer

2001 volkswagon jetta wont shift passed second gear its an automatic


HI. I would inspect the transmission fluid level, asap. This is the first issue that may cause this no shift. Low fluid level can damage the gear assembly, if it is not at a optimal level. If the fluid is at an acceptable level, this will lead to a failed shift solenoid. These devices are located inside the transmission, mounted on the valve body. You will need to remove the transmission pan, in order to, expose the shift solenoid. there are three(control,kickdown,OD). The solenoid at question, will be your control solenoid(shift). This damaged device will need to be tested for proper Resistance, or continuity. A multimeter can be used for testing. Each solenoid is equipped with two terminals. use these terminals for testing. This will , also, require you to drain all the transmission fluid, as well.


NOTE_ If you are uncomfortable with disassembling the transmission, i would suggest to contact your local mechanic for this inspection, and repair.

Dec 01, 2009 | 2001 Volkswagen Jetta TDI

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