Question about 2000 Cadillac Seville

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Does Shift solenoid A&B control shifting into 5th gear on an automatic transmission?

I have a 2000 cadillac seville with a 4t80e automatic transmission. My car stopped shifting into 5th gear at high speeds. It stays in 4th when maintaining my speed, or accelerating, and only shifts into 5th gear if i take my foot completely off the gas, or If i'm going downhill. I believe its the shift solenoids A&B, but I can't find any information saying if these are in charge of 5th gear, or if 5th gear is controlled by another solenoid that could be malfunctioning

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  • Cadillac Master
  • 1,632 Answers

First check the transmission MIL code , that will tell you if it is the Over Drive lock solenoid mal functioning , Do a tranny oil change with filter ,then replace fifth gear pressure solenoid , when you are there already .

Posted on Jan 23, 2013

  • cal_go1711
    cal_go1711 Jan 23, 2013

    I got PCM P0734 - Incorrect 4th Gear Ratio. Is that related to solenoids A or B? Thanks

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Posted on Jan 02, 2017

localwonder
  • 6784 Answers

SOURCE: where is location for the shift solenoid on a 1992 cadillac de?

they are located inside the transmission pan.

Posted on Mar 16, 2009

  • 51 Answers

SOURCE: Where is the shift selinod located at. how hard

remove the transmission pan they are bolted to the valve body inside the pan.

Posted on Mar 16, 2009

  • 173 Answers

SOURCE: 2005 Cadillac Deville gear shift

replace park neutral switch located beside the shift cable

Posted on Apr 04, 2010

  • 2926 Answers

SOURCE: Transmission problem: does't shift 4th

This could be caused by a defective shift solenoid that would require transmission pan removal and valve body disassembly to replace the solenoid. Is there an engine light that is lit? Is there e trouble code displayed on the instrument cluster?

Posted on Oct 04, 2010

bluebirdmate
  • 1190 Answers

SOURCE: I have a 95 cadillac

Hello: PO 76 deals with the pressure control solenoid, this is per 1995 Cadillac service manual. In the section for the Northstar engine and the 4T80 transmission.

Posted on Feb 12, 2011

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05 Trailblazer transmission says neutral but gear shiftier is locked in park.


Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components:
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Circuit Description
The transmission range (TR) switch is part of the park/neutral position (PNP) and back-up lamp switch assembly, which is externally mounted on the transmission manual shaft. The TR switch contains four internal switches that indicate the transmission gear range selector lever position. The powertrain control module (PCM) supplies ignition voltage to each switch circuit. As the gear range selector lever is moved, the state of each switch may change, causing the circuit to open or close. An open circuit or switch indicates a high voltage signal. A closed circuit or switch indicates a low voltage signal. The PCM detects the selected gear range by deciphering the combination of the voltage signals. The PCM compares the actual voltage combination of the switch signals to a TR switch combination chart stored in memory.

These are all electronically controlled , yur best bet would be to take your vehicle to the dealer .

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2000 regal won't go out of park


I would think it has something to do with
Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consist of the following components:
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PRND321 Display
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?€¢
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?€¢
The IPC detects a loss of serial data communications with the ECM. The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components:
?€¢
The automatic transmission shift lock control solenoid


?€¢
The automatic transmission shift lock control switch

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