Question about 2002 Chevrolet Monte Carlo

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02 Monte Carlo Message Center "Low Coolant"

My message center displays the "low coolant" message but the coolant level is OK and the engine does not heat up. The message center also displays "security" occasionally but not everytime I drive. What the heck is going on? The owners manual isn't much help. Can the message center be disconnected?

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  • spsdude53 May 21, 2009

    Thanks. I thought about the thermostat however the temp gage seems to cycle normally.

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Is you're thermostat opening properly? If not, then that would explain the "fullness" of your radiator.

Posted on May 21, 2009

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How can I reset the low coolant level light in the message center on 02 impala


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Where's the coolant level sensor located on a 6.0 '02 Chevy 2500 HD Silverado?


this might be important for you to know
Quote:

08-08-49-002: False Triggering of Low Coolant Level Warning Message (Reprogram HVAC Control Module) - (Feb 13, 2008)

Subject:
False Triggering Of Low Coolant Level Warning Message (Reprogram HVAC Control Module)

Models:
2007-2008 Chevrolet Silverado 2500 and 3500 Heavy Duty Series Only
2007-2008 GMC Sierra 2500 and 3500 Heavy Duty Series Only
with 6.6L Diesel Engine (VIN 6 -- RPO LMM)

--------------------------------------------------------------------------------
Condition
Some customers may comment that a "COOLANT LEVEL LOW ADD COOLANT" message is displayed in the Driver Information Center (DIC) even though the coolant level is normal.

Cause
This condition may be caused by a false reading during off-road driving or in high slush conditions.

Correction
Do This - Reprogram the HVAC control module.
Don't Do This - Do not replace the coolant level sensor, HVAC control module or radiator surge tank.


A revised calibration has been developed to address this condition. Technicians are to reprogram the Heating Ventilation and Air Conditioning (HVAC) control module with the latest software available on TIS2WEB. Refer to the Service Programming System procedures in SI. As always make sure your Tech 2 is updated with the latest software version.


Warranty Information
For vehicles repaired under warranty, use:
Labor: Operation D4707
Description: HVAC Control Head Module or Assembly Reprogramming with SPS
Labor Time: Use Published Labor Operation Time

Dec 02, 2013 | 2002 Chevrolet Silverado 2500HD

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How do I change a coolant sensor on a 1996 Z34 Monte Carlo?


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Fill the tires close to the max on sidewall & check the spare

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Most cars require a special tool,some don't,read owners manual

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1 Answer

Message center wont stop saying low oil presure how do i reset it and it also say low coolant


REPLACE THE OIL LEVEL SENSOR WITH A GM REPLACEMENT I HAD THE SAME PROB

Mar 17, 2012 | 2001 Oldsmobile Aurora

1 Answer

2004 monte carlo ss running hot on start up. Replaced thermostat and radiator cap.


CHECK COOLANT OVERFLOW JUG IF EMPTY ADD MORE COOLANT UNTIL COOLANT LEVEL STAY AT FULL COLD MARK.LONG AS COOLANT LEVEL OVERFLOW EMPTY KEEP COOLANT AT COLD FULL MARK.IF COOLANT OVERFLOW JUG YOUR RADIATOR COOLANT LEVEL LOW.

Sep 16, 2011 | 2003 Chevrolet Monte Carlo

1 Answer

Low coolant light is on and service traction control no engine light but there is no power will have trouble going up small hills?


when coolant level is low the ecu goes into "safe" mode, top up coolant and see if light goes off, if it does see if it drives ok. check for coolant loss and repair as required

Jun 12, 2010 | 2002 Chevrolet Monte Carlo

3 Answers

Coolant level low light comes on and coolant level is not low in reserve tank or radiator.


There is a TSB for this problem. Here it is.


Bulletin No.: 04-06-02-007

Date: August 11, 2004

TECHNICAL

Subject:
Low Engine Coolant Level Indicator Always On (Diagnose Low Coolant Level System Operation/Check Sensor for Oil Contamination)

Models:
2000-2002 Buick Century, Regal
2000-2001 Chevrolet Lumina
2000-2002 Chevrolet Impala, Monte Carlo
2000-2002 Pontiac Grand Prix
2000-2002 Oldsmobile Intrigue


Condition

Some customers may comment that the low engine coolant level indicator is always illuminated.


Cause

The cause of this condition may be due to engine oil contaminating the coolant. Possible sources of oil contamination are internal engine leaks, improper service procedures, or the addition of some types of anti-leak additives to the cooling system. Once in the coolant, the oil leaves deposits on the level sensor creating an insulating film. This film results in a false activation of the coolant level indicator.


Correction

Diagnose low coolant level system operation and check the sensor for oil contamination using the procedure listed below.


Important: No coolant supplements should be used in GM cooling systems, other than what is approved and recommended by GM. The use of "aftermarket" over-the-counter sealing and cooling supplements may affect the operation of the low coolant level sensor. Discoloration of the coolant recovery bottle is normal and does not necessarily indicate that coolant contamination is present. Flush cooling system only when instructed by this bulletin.

1. Verify that the coolant is at proper level in the radiator and the coolant recovery bottle. If the coolant is low, add proper amount of 50/50 water and DEX-COOL(R) mixture. If the low coolant light operates properly, diagnose the cooling system for loss of coolant as outlined in SI. DO NOT proceed further with this bulletin.

2. Remove the low coolant level sensor. Refer to Coolant Level Module Replacement in the Engine Cooling sub-section.

3. With the key on, the engine off and the coolant level sensor disconnected from the vehicle wiring harness, observe the low coolant light:


^ Light is on - Chassis wiring or instrument cluster concern. Follow the appropriate diagnostic information in SI.

^ Light is out - Proceed to Step 4.



4. With the key off, connect the coolant level sensor into the vehicle's wiring harness. Connect a ground wire (1) to the battery negative terminal. Using a sharp probe (3) attached to the ground wire, ground the coolant sensor probe (2) as shown in the illustration. Make sure a good contact is made. With the key on and the engine off, observe the low coolant light for at least 15 seconds.


^ Light is on - Replace the low coolant sensor and re-check system operation.

^ Light is out - Proceed to Step 5.


5. Using a small wire brush or emery cloth, polish the low coolant level sensor probe to remove any film or oxidation. The probe should be a bright brass color when finished. Use Brake Parts Cleaner to flush removed deposits from the low coolant sensor probe. Re-install the low coolant sensor into the vehicle and proceed to Step 6.

6. Flush the cooling system and install new DEX-COOL(R) mixture as outlined in the SI. Check the vehicle's warranty history to determine if any engine gasket had recently been changed. If there has not been a recent gasket replacement, locate and repair the source of the engine oil contamination.


Oct 31, 2009 | 2002 Chevrolet Monte Carlo

1 Answer

The low coolant light stays on in my 2002 monte carlo


Ur coolant level sensor might need changing. If not, the circuit associated with the coolant level sensor needs to be inspected

Jan 27, 2009 | 2002 Chevrolet Monte Carlo

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