Question about Chevrolet Corvette
Take out the speed sensor from the gearbox but leave it connected to the wiring. Start the engine and keep the gearbox in Park. Put the shaft of the sensor in a drill and start rotating it - the speed indicator should move proportionally with the speed of rotation of the shaft. If it doesn't then a part is faulty, start by replacing the sensor.
Posted on Jul 14, 2010
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Posted on Jan 02, 2017
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Oct 24, 2016 | 2009 Chevrolet Silverado 1500
The brake pedal position (BPP) sensor
The body control module (BCM)
The cruise on/off switch
The + RES switch (equivalent to resume/accel switch)
The - SET switch (equivalent to set/coast switch)
The engine control module (ECM)
The clutch pedal position (CPP) sensor, if equipped with a manual transmission
The throttle actuator control (TAC) motor
The vehicle speed sensor
The body control module (BCM) monitors the signal circuit of the cruise control switches, which are located on the steering wheel. The BCM relays the cruise control switch status to the engine control module (ECM) via the GMLAN serial data circuit. The ECM uses the status of the cruise control switch to determine when to capture and maintain the vehicle speed. The ECM monitors the vehicle speed signal circuit in order to determine the desired vehicle speed. The ECM uses the TAC motor in order to maintain the vehicle speed. For further information on the TAC system, refer to Throttle Actuator Control (TAC) System Description for the 2.2L engine or to Throttle Actuator Control (TAC) System Description for the 2.4L engine.
Ignition voltage is supplied to the cruise control switch from the 2-ampere EPS fuse located in the integrated BCM fuse block. The cruise control function switches are arranged in a resistive ladder design, with each cruise control function switch having a different resistance value. The BCM detects a specific voltage value that is associated with the cruise control function switch being activated. When the normally open cruise control on/off switch is turned ON, the switch closes and the BCM sends a GMLAN serial data message to the ECM indicating that the on/off switch is active. Similarly, when the normally open + RES switch or the normally open - SET switch are pressed, the switch closes and the BCM detects the predetermined voltage signal on the cruise control switch signal circuit. The BCM sends a GMLAN serial data message to the ECM indicating that the + RES switch or the - SET switch is active. The + RES switch or the - SET switch will remain inactive when the BCM has not received the predetermined voltage signal from the on/off switch.
Unless the air bag light is lit too , your best bet would be to take your vehicle to a qualified repair shop.
Aug 09, 2016 | 2008 Chevrolet Chevrolet HHR LT
Feb 15, 2016 | Cars & Trucks
Limited range of throttle movement
Your going to need to take this to a ASE certified repair shop or the dealer , you probably don't have the diagnostic tools to trouble shoot this problem.
Aug 16, 2015 | Cadillac Cars & Trucks
Throttle Position (TP) Sensor 1-2 Correlation
Inspect the TAC module connectors for signs of water intrusion. If water intrusion occurs, multiple DTCs may set without any circuit or component conditions found during diagnostic testing.When the TAC module detects a condition within the TAC system, more than one TAC system related DTC may set. This is due to the many redundant tests run continuously on this system. Locating and repairing one individual condition may correct more than one DTC. Disconnecting components during testing may set additional DTCs. Remember this if you review the stored information in Capture Info.If this DTC is determined to be intermittent, refer to Testing for Intermittent Conditions and Poor Connections .This is what's listed for this code.
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