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My instrument lights PRND21 and mileage/oil/tire pressure gages no longer display. They were blinking on and off for about a week then have finally gone out. I have a 2007 Tahoe

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Posted on Jan 02, 2017

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SOURCE: need to disable tire pressure warning light. Air pressure normal

You cannot "disable" the TPWS. Also, when you replace sensors, they need to be programmed to the TPWS computer.

Posted on Jun 09, 2009

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SOURCE: oil gage at 78% in 2007 tahoe when to change oil?

If you are a normal driver then I recommend you change your oil/filter every 5,000 miles if you are using conventional oil. If you are using synthetic oil then change every 7,000 miles. Just as important is to use a quality filter such as AC/Delco, Purolator, or Wix. On your GM vehicle I would use an AC/Delco filter. Another very important filter is the Air Filter. Replace this filter every 30,000 mile unless you drive in very dusty conditions, and if so every 20,000 miles.

Posted on Dec 16, 2009

wracefans24
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SOURCE: no oil pressure. Oil light stayed on longer and

try replacing the oil sending unit,it is what tells the oil pressure,it just screws in the engine,about $15.00

Posted on Jan 14, 2010

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SOURCE: I HAVE A 2007 GMC YUKON XL WITH A PEGGED OUT OIL

on the top rear of the block.

Posted on Jan 22, 2011

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1 Answer

Is there a fuse that works the oil pressure gauge and the battery gauge for a 2005 chevy trailblazer


NO , there is not a fuse just for those two thing's ! There are two power supply's for the whole insturment cluster . You could need a new cluster or the ECM isn't sending this info. to the cluster . Could have DTC'S - diagnostic trouble codes stored in the PCM or the insturment cluster . Without knowing how this works (insturment cluster gets it's info.) Your best bet , take it to a qualified repair shop that has the knowledge and test equipment to diagnose this problem.
Engine Oil Pressure Gage
The instrument panel cluster (IPC) displays the engine oil pressure as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the engine oil pressure. The engine oil pressure gage defaults to 0 psi (0 kPa) or below if:
• The ECM detects a malfunction in the engine oil pressure sensor circuit.
• The IPC detects a loss of serial data communications with the ECM.
For the 4.2L LL8, the ECM uses an engine oil switch that is open when the oil pressure is normal and closed when the oil pressure is low. At normal pressure, the engine oil pressure gage will display 275 kPa (40 psi). At low pressure, the gage will go to 0 kPa and the low pressure warning will be displayed in the driver information center (DIC). At high pressure, the gage will display 551 kPa (80 psi). Any values between these three values are calculated values determined by the ECM.

Voltmeter
The instrument panel cluster (IPC) displays the vehicle voltage based on the information from the body control module (BCM). The IPC uses the serial data information from the BCM to provide a voltage level indication on the voltmeter.

DTC P0521: Engine Oil Pressure (EOP) Sensor Performance

DTC P0522 Engine Oil Pressure (EOP) Sensor Circuit Low Voltage
DTC P0523 Engine Oil Pressure (EOP) Sensor Circuit High Voltage

Volt Gage Inaccurate or Inoperative
2
Install a scan tool.
Turn the ignition ON, with the engine OFF.
With the scan tool, perform the instrument panel cluster (IPC) gauges output control.
Does the volt gauge move up and down when commanded?

Aug 12, 2017 | Cars & Trucks

1 Answer

Where is the oil pressure switch on a chevy silverodo 2006.


What engine size , because could have come with a few different ones ? Engine oil pressure sensor is a input to the PCM - engine computer . This will turn on check engine light if thier is a problem ! What is the problem your having , oil light on , oil pressure gauge not working ?
Engine Oil Pressure Gage
The instrument panel cluster (IPC) displays the engine oil pressure as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the engine oil pressure. The engine oil pressure gage defaults to 0 kPa (0 psi) or below if:
• The PCM detects a malfunction in the engine oil pressure sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.

Jan 24, 2017 | Cars & Trucks

1 Answer

How do I reset my tire pressure light when tires are fine


My Lesabre has buttons on the left side of the dash. The one called Gage Info has a number of things like oil pressure check tire pressure heat Battery. Push this button till it says check tire pressure To reset your light push the reset button and hold for fifteen or twenty second and the light on the dash should go out and it will show tire pressure ok on the gage. Before you reset check all four tires for air as one tire could be down 8 or 10 lbs and the light will come back on. they all have to be the same pressure.
When you change your oil you should reset the oil section as well and hold reset the same as above. The oil section tells you how much oil you use over an amount of time.

Apr 01, 2016 | 2004 Buick LeSabre

1 Answer

How do I check and replace engine oil sensor.


Knowing how these gauges work , I'd say you have an instrument cluster problem not oil sender unit. 2003 - 2006 GM had bad stepper motors in the instrument cluster . If there was a problem with the oil sender the gauge would default to zero .
Engine Oil Pressure Gage
The instrument panel cluster (IPC) displays the engine oil pressure as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the engine oil pressure. The engine oil pressure gage defaults to 0 kPa (0 psi) or below if:
?€¢
The PCM detects a malfunction in the engine oil pressure sensor circuit.

?€¢
The IPC detects a loss of class 2 communications with the PCM.

If you don't know what class 2 serial data communications are ,google it. How to repair GM Instrument Cluster Speedometer Gauge Stepper

Dec 23, 2015 | 2003 Chevrolet Silverado 1500

1 Answer

How do i reset flashing low tire pressure,change oil soon after the problem is taken care of?


To reset the tire pressure message, first make sure all pressures are appropriate, then turn the ignition on with the engine off. Press and hold the GAGES button located on the left side of the steering column until TIRE PRESSURE appears in the display. Press and hold the RESET button for 5 seconds until TIRE PRESSURE RESET appears then release the RESET button.

To reset change oil soon message, press GAGES button until OIL LIFE displays. Press and hold RESET for 5 seconds.

Mar 15, 2011 | 1998 Buick Park Avenue

1 Answer

Fuel gage, oil pressure and temp. gages dose not work, whats the problem?


unfortunately it is most likely your instrument cluster, these and several vehicles in gms lineup are pron for these failures. you will have to document the mileage and take the instrument to the dealer. i hope this helps and thanks for rating my answer

Feb 13, 2011 | 2005 GMC Envoy Xl

1 Answer

What causes my nissan maxima to get low gas mileage? I was told the sensor bank one and had ti replaced no change in mileage.my gage jumps from 12 -27 miles a gallon.It drinks gas!


Driving habits...incorrect tire pressure...excessive weight in car...low oil/old oil. Many things affect mileage. My 2002 max needed a new O2 sensor. Once replaced the mileage improved slightly.

Sep 06, 2010 | 2002 Nissan Maxima

2 Answers

The mileage on my Jeep has dropped from 16 to 12 mpg in the last 3-4 weeks. I have been pulling a popup tent trailer behind it (only weighs about 1,600 lbs.), but the mileage drop has been evident even...


These are the most common causes for bad mileage.
Tire pressure is a huge factor (Tire should be set at the factory recommendation or 1-2 psi above, but never below - Tire should also be a Low Rolling Resistance Tire)
Oil level (you said it's OK, so I assume it's not above the full mark)
Running extra accessories (A/C, etc)
Dirty Air Filter
bad Ignition timing
engine running hotter than normal
fuel injectors may be stuck partially open
bad fuel pressure regulator
faulty emission control device (this usually triggers a check engine light)

Sep 08, 2009 | 2005 Jeep Liberty

1 Answer

Gages


Yoyu dont mention the mileage on your Yukon but low oil pressure will indeed light the CES light when it reachs o psi. Have you checked your oil? Have you changed your oil and filter. High mileage and poorly maintained motors will eventually wear out and develope low oil pressure. A tempary cure would be to use a higher weight oil 20w50 will get a few more miles out of the old gal if indeed the cam, main or rod bearings have reached their service limit.. Good luck

Jun 24, 2009 | 1999 GMC Yukon

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