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Harsh shifts after transmission rebuild - 2005 Chevrolet Equinox

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They need to adjust the shifting cable, take it back to who built the trans and tell them to adjust the shifting cable, if its not adjusted right, it will burn up the trans again,be sure to get that fixed quickly, also, some trans builders remove the wave plates in trans ,that will cause a hard shift , most likey ,the cable, hope this helps you, thanks robert b.

Posted on Jun 27, 2009

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1997 chevy blazer transmission lunges forward in park,no reverse,and moves forward in nuetral


It can be issue with gears or problem with transmission and needs to be rebuild.Also get the tranny fluid checked. If its low,then such problems occurs.
To troubleshoot these types of issues,check the actual solved problems with these types of issues.There are solved help links provided below:-------Click the link below and go through the details and diagrams to troubleshoot the problem :-----2003 Lexus RX300: Transmission Fluid Burnt
Brown and not Shift to reverse?


http://whatisbyme.blogspot.in/2012/05/2003-lexus-rx300-transmission-fluid.html
-----------2007 Chrysler 300: Transmission Stuck in Park?

http://repairhelpcenter.blogspot.in/2012/06/2007-chrysler-300-transmission-stuck-in.html
-------------2000 Toyota Camry: Transmission slipping and
Stuck up?





http://whatisbyme.blogspot.in/2012/05/2000-toyota-camry-transmission-slipping.html
----------
1996 Toyota Corolla: Transmission Shift Interlock will not
Release?


http://technoanswers.blogspot.in/2012/04/1996-toyota-corolla-transmission-shift.html

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Lexus LS400: Transmission or Torque Converter?

http://technoanswers.blogspot.in/2012/04/lexus-ls400-transmission-or-torque.html

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CV AXLE stuck in Transmission?





http://technoanswers.blogspot.in/2012/04/cv-axle-stuck-in-transmission.html

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Transmission in reverse, acts like it\'s in
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http://schematicsdiagram.blogspot.in/2012/04/transmission-in-reverse-acts-like-its.html
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http://schematicsdiagram.blogspot.in/2012/04/delayed-shift-and-harsh-shifting.html

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http://technoanswers.blogspot.in/2012/02/dodge-neon-wont-go-in-reverse.html

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http://technoanswers.blogspot.in/2012/02/dodge-automatic-transmission-will-not.html

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http://technoanswers.blogspot.in/2012/02/dodge-manual-transmission-will-not-go.html

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http://technoanswers.blogspot.in/2012/02/transmission-is-making-buzzing-noise.html

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http://schematicsdiagram.blogspot.in/2012/06/1998-dodge-ram-not-shift-to-reverse.html
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http://schematicsdiagram.blogspot.in/2012/02/transmission-leak-on-toyota.html

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--------
These will help.
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Nov 22, 2012 | Cars & Trucks

1 Answer

My 2002 gmc wont shift and code p1870 came up it will stay im low gear


You can replace the transmission valve body as per the instruction or install a new TCC apply valve kit. However the installation requires for the valve body to be removed and honed out by a special tool. I wouldn't recommend this procedure unless you have the proper tools and the know how about the inner workings of the automatic transmissions.

#01-07-30-023B: Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set (Replace Valve Body) - (Mar 22, 2002)
Subject: Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set (Replace Valve Body)
Models: 1996 Buick Roadmaster
1996 Cadillac Fleetwood
1999-2000 Cadillac Escalade
1996-2000 Chevrolet Camaro, Corvette
1996-2000 Pontiac Firebird
1996-2000 Chevrolet and GMC Light Duty Truck Models
1996-2000 Oldsmobile Bravada
with 4L60-E Automatic Transmission (RPO M30)
Built Prior to January 15, 2000 (Julian Date 0015)

This bulletin is being revised to update VIN Breakpoint Date information and revise the Parts Information table. Please discard Corporate Bulletin Number 01-07-30-023A (Section 07 -- Transmission/Transaxle).

Condition: Some customers may comment on a harsh 1-2 upshift and the Check Engine Light or Service Engine Soon indicator is illuminated.

Diagnosis: Typically, these vehicles will have been driven more than 32,000 km (20,000 mi) before this condition occurs.

The scan tool may show a DTC P1870 set as a history code.

A harsh 1-2 shift or DTC P1870, caused by wear in the control valve body, may be difficult to duplicate when the transmission temperature is below 93°C (200°F).

Cause: The condition may be due to wear in the control valve body. This wear occurs in the bore that contains the TCC isolator and regulator valves, and results in poor, or no, TCC apply.

Important:
• DTC P1870 is a type B code. The conditions for setting the P1870 DTC must occur on TWO CONSECUTIVE TRIPS (ignition cycles, with a drive cycle) before setting a P1870 history code.
• When the conditions for setting DTC P1870 are met (first trip), the PCM commands maximum line pressure and harsh 1-2 shifts are the result.
• This may result in a harsh 1-2 shift with no history code if the conditions for setting the DTC required for the second trip are not met, on two consecutive trips (Ignition cycles, with a drive cycle).
• When the conditions for setting the DTC are met, on the second consecutive trip, a DTC P1870 is stored as a history code.
• When the P1870 code is stored, the PCM will turn on the Service Engine Soon (SES), Check Engine Light (CEL), or Malfunction Indicator Lamp (MIL).

Correction: Install a control valve body with the revised TCC regulator and isolator valves. Refer to the Parts Information table below. These valves are used in all transmissions produced after January 15, 2000 (Julian Date 0015), and all of the service parts currently available through GMSPO contain revised TCC regulator and isolator valves.

Important: If all of the following conditions are true, it is not necessary to rebuild the transmission or to replace additional transmission components beyond the control valve body.
• Transmission operation is normal before the transmission reaches operating temperature, or before DTC P1870 is set (no slips, flares, or missing gears).
• The torque converter is not blue or overheated.
• The transmission fluid is not burned or has no burned odor.
• The transmission fluid pan contains no abnormal debris (clutch material, bronze, brass, or metal fragments).

Keep us updated.

Oct 06, 2011 | Cars & Trucks

1 Answer

Code p 1870 came up and truck wont shift


You can replace the transmission valve body as per the instruction or install a new TCC apply valve kit. However the installation requires for the valve body to be removed and honed out by a special tool. I wouldn't recommend this procedure unless you have the proper tools and the know how about the inner workings of the automatic transmissions.

#01-07-30-023B: Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set (Replace Valve Body) - (Mar 22, 2002)
Subject: Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set (Replace Valve Body)
Models: 1996 Buick Roadmaster
1996 Cadillac Fleetwood
1999-2000 Cadillac Escalade
1996-2000 Chevrolet Camaro, Corvette
1996-2000 Pontiac Firebird
1996-2000 Chevrolet and GMC Light Duty Truck Models
1996-2000 Oldsmobile Bravada
with 4L60-E Automatic Transmission (RPO M30)
Built Prior to January 15, 2000 (Julian Date 0015)

This bulletin is being revised to update VIN Breakpoint Date information and revise the Parts Information table. Please discard Corporate Bulletin Number 01-07-30-023A (Section 07 -- Transmission/Transaxle).

Condition: Some customers may comment on a harsh 1-2 upshift and the Check Engine Light or Service Engine Soon indicator is illuminated.

Diagnosis: Typically, these vehicles will have been driven more than 32,000 km (20,000 mi) before this condition occurs.

The scan tool may show a DTC P1870 set as a history code.

A harsh 1-2 shift or DTC P1870, caused by wear in the control valve body, may be difficult to duplicate when the transmission temperature is below 93°C (200°F).

Cause: The condition may be due to wear in the control valve body. This wear occurs in the bore that contains the TCC isolator and regulator valves, and results in poor, or no, TCC apply.

Important:
• DTC P1870 is a type B code. The conditions for setting the P1870 DTC must occur on TWO CONSECUTIVE TRIPS (ignition cycles, with a drive cycle) before setting a P1870 history code.
• When the conditions for setting DTC P1870 are met (first trip), the PCM commands maximum line pressure and harsh 1-2 shifts are the result.
• This may result in a harsh 1-2 shift with no history code if the conditions for setting the DTC required for the second trip are not met, on two consecutive trips (Ignition cycles, with a drive cycle).
• When the conditions for setting the DTC are met, on the second consecutive trip, a DTC P1870 is stored as a history code.
• When the P1870 code is stored, the PCM will turn on the Service Engine Soon (SES), Check Engine Light (CEL), or Malfunction Indicator Lamp (MIL).

Correction: Install a control valve body with the revised TCC regulator and isolator valves. Refer to the Parts Information table below. These valves are used in all transmissions produced after January 15, 2000 (Julian Date 0015), and all of the service parts currently available through GMSPO contain revised TCC regulator and isolator valves.

Important: If all of the following conditions are true, it is not necessary to rebuild the transmission or to replace additional transmission components beyond the control valve body.
• Transmission operation is normal before the transmission reaches operating temperature, or before DTC P1870 is set (no slips, flares, or missing gears).
• The torque converter is not blue or overheated.
• The transmission fluid is not burned or has no burned odor.
• The transmission fluid pan contains no abnormal debris (clutch material, bronze, brass, or metal fragments).

Keep us updated.

Oct 06, 2011 | Cars & Trucks

1 Answer

Harsh shift points, delayed shift points, mushy power. tranny rebuilt at 36900. i am original owner, all highway miles, mature driver. tranny been sluggish ever since Massey Yardley rebuilt it, never was...


I don't have a solution but here's a couple of thoughts.

1. What were the problems that caused the tranny to be rebuilt at 36900? Were those problems similar to what you are experiencing now?
2. Did they rebuild your transmission or drop in another rebuilt one?
3. If you are still under warranty (I don't know when it was rebuilt), I would hustle back there and complain. In fact I'd do that even if it's not under warranty.

Good luck!

Mar 09, 2010 | 2007 Chrysler Town & Country LX New Cars

1 Answer

Lexus rx300 2002 hard shift between 1st and 2nd. Fluid and filter changed 3000mi ago, car has 93000mi


The 1999-2003 Lexus RX300 models have a common failure of the engine computer that causes the harsh shifting of the transmission. You need to get the computer (ECM - Engine Control Module) rebuilt or replaced before it causes permanent damage to the transmission. Even if the transmission is already ruined, the ECM will still need to be repaired. Most often, the transmission is fine though, and rebuilding the ECM will restore the smooth shifts that the Lexus should have. Circuit Board Medics can rebuild the ECM and reprogram it so that you only have to plug it back in when you get it back. See the link below:

http://circuitboardmedics.com/1999-2003-lexus-rx300-hard-transmission-shifting-ecm-ecu-computer-repair/

Jan 25, 2010 | 2002 Lexus RX 300

2 Answers

I have a 1994 Pontiac Firebird Trans Am with an automatic transmission. I get an intermittent service light and a P0029 code is referenced. When this happens the car seems shift harshly. I thought P0029 is...


It's an exhaust valve inside the transmission, when the solenoid isn't working right, the pressurized fluid can't exhaust through the passages, which can cause rough shifting. It has to be taken to a transmission shop, the transmission pan has to be dropped and possibly the valve body to get at the solenoid. Hope this helped.

Nov 14, 2009 | 1994 Pontiac Firebird

1 Answer

Transmission shifts harsh after driving it 10-15 miles


alright, since the computer sees the transmission slipping, it maximizes pressure to try and compensate. with the 1870 code it is referring to the lockup clutch in the converter. I have seen colleagues remove the TCC (torque converter clutch) valve from the valve body and insert a stiffer spring to remedy the situation, but i have only seen it work effectively once. It almost always resulted in more problems and headaches wither immediately, or a week down the road.

i know its not what you want to hear, but a rebuild will probably be your best bet. hope this helps.

May 12, 2009 | Chevrolet Astro Cars & Trucks

1 Answer

98 grand prix gtp tranny


The tranny is called a 4T65E-HD(heavy duty). The rebuild kits are the same for both supercharged and non-supercharged cars. The occasional harshness is caused by the EPC solenoid hanging up from wear. I recommend installing a Superior Shift Correction kit, 4th clutch hub (the splines strip), EPC, and TCC/PWM solenoid.

This combo works great!

Apr 03, 2009 | 1998 Pontiac Grand Prix

1 Answer

Harsh or improper 1-2 upshift


Have you had your throttle position sensor checked out? It'll cause a harsh and/or delayed shift from first to second. Second thing to check out is your PCM, as it controls the shifting of your transmission.

Mar 25, 2009 | 2008 Chevrolet Silverado 1500

2 Answers

My Pontiac Bonneville Vibrates when you pull off.


you need to get it in and have the trasnmission checked...it sounds bad

Dec 31, 2008 | 1999 Pontiac Bonneville

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