Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSCOOLANT - SPECIFICATION/USAGE
1990 Chevrolet Lumina APV V6-191 3.1L
Coolant - Specification/Usage
1990 Chevrolet Lumina APV V6-191 3.1LSECTION Coolant - Specification/Usage
90chevy29
Number: 91-62-6B
Section: 6B
Date: August 1990
Corp. Bulletin No.: 066202
Subject: COOLANT USAGE
Model and Year: ALL 1988-91 PASSENGER CARS AND TRUCKS
TO: ALL CHEVROLET DEALERS
THIS INFORMATION SUPERSEDES INFORMATION PROVIDED BY GMSPO IN PARTS AND ACCESSORIES BULLETINS IB NO. 90-55 AND 90-60 AND INFORMATION PROVIDED IN VARIOUS TRUCK SERVICE AND OWNERS MANUALS AND SHOULD BE USED TO DETERMINE CORRECT COOLANT USAGE IN LIGHT AND MEDIUM DUTY TRUCK APPLICATIONS.
GM coolant specification 6038-M or 1899-M (P/N 1052103) is for use in all light duty trucks with gasoline or diesel engines. This coolant features a low silicate formulation and is intended only for use in engines that have cylinder heads and cylinder blocks made of cast iron.
GM coolant specification 1825-M or 6043-M (P/N 1052753) which until recently has been the recommended coolant for light duty trucks has been superseded by GM coolant 6038-M or 1899-M (P/N 1052103) in cast iron truck engines. GM coolant specification 1825-M has a higher silicate formulation which is recommended for all passenger car engines with cylinder heads or cylinder blocks made of aluminum.
Number: 91-62-6B
Section: 6B
Date: August 1990
Corp. Bulletin No.: 066202
Subject: COOLANT USAGE
Model and Year: ALL 1988-91 PASSENGER CARS AND TRUCKS
TO: ALL CHEVROLET DEALERS
THIS INFORMATION SUPERSEDES INFORMATION PROVIDED BY GMSPO IN PARTS AND ACCESSORIES BULLETINS IB NO. 90-55 AND 90-60 AND INFORMATION PROVIDED IN VARIOUS TRUCK SERVICE AND OWNERS MANUALS AND SHOULD BE USED TO DETERMINE CORRECT COOLANT USAGE IN LIGHT AND MEDIUM DUTY TRUCK APPLICATIONS.
GM coolant specification 6038-M or 1899-M (P/N 1052103) is for use in all light duty trucks with gasoline or diesel engines. This coolant features a low silicate formulation and is intended only for use in engines that have cylinder heads and cylinder blocks made of cast iron.
GM coolant specification 1825-M or 6043-M (P/N 1052753) which until recently has been the recommended coolant for light duty trucks has been superseded by GM coolant 6038-M or 1899-M (P/N 1052103) in cast iron truck engines. GM coolant specification 1825-M has a higher silicate formulation which is recommended for all passenger car engines with cylinder heads or cylinder blocks made of aluminum.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.