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I have a 2010 Chevy impala LS instrument cluster and it has a 20 pin plug I'm trying to figure out which wire's on the back of the cluster are for the speed sensor, rpm, gas, and temp wires.

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  • Cars & Trucks Master
  • 15,575 Answers

Boy your way off base . All the gauges are inputs from the ECM - engine computer . The VSS - vehicle speed sensor , ETC - engine coolant temp sensor , sending unit in the fuel tank , All this sensors input the engine computer . The PCM then sends this info on the GMLAN serial data bus ,communications network . The Instrument cluster has a microprocessor inside that translates this info an controls the gauges. You probably have an instrument cluster problem or a communication network problem . Your best bet is to take your vehicle to the dealer or some other qualified repair shop. Need to have it checked for DTC'S - diagnostic trouble codes.
Indicators and Warning Messages
Refer to Indicator/Warning Message Description and Operation.
Engine Coolant Temperature Gage
The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the engine coolant temperature. The IPC receives the coolant temperature information via serial data message from the body control module (BCM). The engine coolant temperature gage defaults to 60?°C (140?°F) or below if:
?€¢
The ECM detects a malfunction in the engine coolant temperature sensor circuit.

?€¢
The IPC detects a loss of serial data communications with the ECM.

?€¢
The IPC detects a loss of serial data communications with the BCM.
Fuel Gage
The instrument panel cluster (IPC) displays the fuel level as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the fuel level percent. The body control module (BCM) sends the fuel level information from the ECM to the IPC via a serial data message indicating the fuel level percent. The fuel gage defaults to empty if:
?€¢
The ECM detects a malfunction in the fuel level sensor circuit.

?€¢
The IPC detects a loss of serial data communications with the ECM.

?€¢
The IPC detects a loss of serial data communications with the BCM.
When the fuel level is less than a pre-determined value, the low fuel indicator illuminates in the IPC.
Odometer
The vehicle odometer is calculated and stored electronically in the instrument panel cluster (IPC). The IPC contains a season odometer and trip odometer A or B. Momentarily press the trip/fuel button in order to toggle between the season odometer and the trip odometer. Press the set/reset button for greater than 0.25 seconds, while the trip odometer is displayed, in order to reset the trip odometer. The IPC displays the vehicle mileage and trip mileage as determined by the engine control module (ECM). The IPC calculates the mileage based on the serial data vehicle speed information from the ECM. The odometer will display 'error' if an internal IPC memory failure is detected. The odometer displays either miles or kilometers and can be set through the customization menu in the driver information center (DIC).
PRNDL Display
The instrument panel cluster (IPC) displays the selected gear position as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the gear position. The PRNDL 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 IPC detects a loss of serial data communications with the body control module (BCM).
Speedometer
The instrument panel cluster (IPC) displays the vehicle speed as determined by the engine control module (ECM). The IPC calculates the mileage based on serial data vehicle speed information from the ECM. The IPC receives vehicle speed information from the body control module (BCM) via a serial data message. The speedometer defaults to 0 km/h (0 mph) if the IPC detects a loss of serial data communications with the ECM or BCM.
Tachometer
The instrument panel cluster (IPC) displays the engine speed as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the engine speed. The IPC receives the engine speed information from the body control module (BCM) via a serial data message. The tachometer will default to 0 RPM if:
?€¢
The ECM detects a malfunction in the engine speed sensor circuit.

?€¢
The IPC detects a loss of serial data communications with the ECM.

?€¢
The IPC detects a loss of serial data communications with the BCM.

How to Diagnose Controller Area Network CAN Suggest you read up on C.A.N.

Posted on May 14, 2016

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6ya staff

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: Instantanious ignition drop out

chek for good engine graund ,inspeckt body graund to.bed graunds on motor and bady will cose lat of hedicks

Posted on Mar 13, 2009

Anonymous

  • 48 Answers

SOURCE: Electrical Instrument cluster does not function

I had the same problem with a car i owned and found out it was a short in the wireing in the dash, you will have too have it re-wired, but too be certain you should have it checked out by a mechanic in your city.........

Posted on May 22, 2009

morse008

Duane Morse

  • 1111 Answers

SOURCE: replacing 3 pin plug on block heater cable 2003

i think you are they should be color coded and match up directly .....however if you changed the wires completely they i would suggest find another 2003 Impala and either photograph it or write the sequence down a dealership will allow you to look at the motor even if you have to pretend you want to test drive it or just look it over

Posted on Sep 20, 2009

Anonymous

  • 1 Answer

SOURCE: trying to convert a 1990 Chevy k1500 instrument

did you get an answer to this question?
Basically you need the DRAC out of the donor vehicle. It is located behind the glove box. 3"x3" square box. Depending on axle gear ratios and tire size you may need to change the jumper settings to allow your speedometer to read properly. This is a very simple procedure.
To convert any 88 and later to the 94 dash you will need not only the drac but get it's harness with at least 6" of its wiring as well.
You will need the 94 dash plug also with at least 6" of wiring on it too.

Posted on Feb 16, 2010

skychief2001

Stephen

  • 21873 Answers

SOURCE: instrument cluster stopped working completely

You may need to get a shop manual to work on it.
The problem could be a bad connection at the cluster, or on the printed circuit board on the back of the cluster. Someone will have to find out where you are loosing power to the cluster. The gauges are grounded thru their individual sensors.

Posted on Dec 19, 2012

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