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Switch to move or shift gears - 2008 Chevrolet Impala LT

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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:
• The automatic transmission shift lock control solenoid
• The automatic transmission shift lock control switch
With the ignition in the ON position, voltage is supplied to automatic transmission shift lock control switch. Voltage flows through the normally closed contacts of the automatic transmission shift lock control switch to the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic transmission shift lock control solenoid causing the transmission shift lever to be physically locked in the PARK position. When the brake pedal is pressed the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to be move out of the PARK position.

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 .

Apr 19, 2017 | 2005 Chevrolet TrailBlazer

2 Answers

Why won't my Lincoln ls engage into gear but will shift into all gears


Shifter cable ? Look at trans. range selector switch on the transmission , have a helper shift gears ! Does it move

Dec 31, 2015 | Lincoln Cars & Trucks

1 Answer

Shifter is locked in park on a 2002 bravada that sayes on dash its in reverse


PRND321 Display
The instrument panel cluster (IPC) displays the selected gear position as determined by the engine control module (ECM). The IPC - instrument panel cluster receives a serial data message from the ECM indicating the gear position. The PRND321 display blanks if:
?€¢
The ECM detects a malfunction in the transmission range switch circuit.


?€¢
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

With the ignition in the ON position, voltage is supplied to automatic transmission shift lock control switch. Voltage flows through the normally closed contacts of the automatic transmission shift lock control switch to the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic transmission shift lock control solenoid causing the transmission shift lever to be physically locked in the PARK position. When the brake pedal is pressed the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to be move out of the PARK position.
The transmission range (TR) switch is part of the park/neutral position (PNP) and backup 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 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.
You need a Tech2 scan tool to diagnose this problem ! possible range sensor !

Sep 03, 2015 | Cars & Trucks

1 Answer

I have a 1995 Chevy lumina 3.4 v6 automatic transmission my problem is the trans. is not going in to gear the shift tower will move from park to drive and I can fill it engage but the car will not go...


if mean you can feel the gear shift lever engage into position then you should check to see if the cable is moving the neutral switch on the transmission. if not then you may have a broken or out of adjusted shift cable. if the gear shift cable is moving the switch then the problem is in the transmission and will have to be looked into.

Aug 23, 2014 | Cars & Trucks

1 Answer

My 2007 chev aveo wont start and cant move gear shift


most cars the brake light switch has to work properly for it to come out of gear and start properly. check this switch! Also First check to see if you have brake lights (if not the switch may have failed) secondly when with the ignition key on when you press the brake pedal do you hear a click from the area of the gear shift lever each time you press the brake pedal? If not the control module, wiring or solenoid may have a problem. First check all your fuses! Hope this helps, Good-Day!

Jul 27, 2014 | 2007 Chevrolet Aveo Sedan

1 Answer

Gear shift will not move -- button on gear shift will not depress to move gear shift out of park


ck brake switch,,shifter will not move,,if brake switch on brake peddle does not activate it ,

Feb 06, 2010 | 2008 Chevrolet Impala

1 Answer

The gear shift is stuck in park. The wheel moves


Make sure you have brake lamps. The shift interlock solenoid is powered by the brake lamp switch.

Nov 15, 2009 | 1996 Ford Explorer

1 Answer

Gear shift won't move out of park sometimes


look for transmission shift interlock solenoid fuse.or a bad brake switch will cause transmission not to come out of park.

Mar 16, 2009 | 1999 Pontiac Firebird

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