Question about 2008 Chevrolet Impala LT
Posted by Anonymous on
Tips for a great answer:
Apr 19, 2017 | 2005 Chevrolet TrailBlazer
Dec 31, 2015 | Lincoln Cars & Trucks
Sep 05, 2015 | Dodge Cars & Trucks
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
Aug 23, 2014 | Cars & Trucks
Jul 27, 2014 | 2007 Chevrolet Aveo Sedan
Mar 11, 2010 | 2005 Cadillac Deville
Feb 06, 2010 | 2008 Chevrolet Impala
Nov 15, 2009 | 1996 Ford Explorer
Mar 16, 2009 | 1999 Pontiac Firebird
15 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: