Tech Tip: GM Liquid Gasket/Engine Sealants Information

Tech Tip: GM Liquid Gasket/Engine Sealants Information

In 2005, General Motors consolidated the use of all liquid gaskets/engine sealants. At that time, two sealants replaced all previous sealants referred to in service information and/or the service manual.

Models affected: 2008 and prior GM passenger cars and trucks (including Saturn); 2003-’08 Hummer H2; 2006-’08 Hummer H3; and 2005-’08 Saab 9-7X with gasoline or diesel engines

In 2005, General Motors consolidated the use of all liquid gaskets/engine sealants. At that time, two sealants replaced all previous sealants referred to in service information and/or the service manual.

In 2007, GM consolidated to one engine sealant already available in a 150 g cartridge and now in a 75 g aluminum tube. As a result, P/N 12346141, 54 g tube, has been deleted from service.

One of these, engine sealant P/N 12378521 (U.S.) and P/N 88901148 (Canada), was released in a cartridge to be used in a conventional caulking gun. The cartridge and conventional caulking gun proved to be too large and cumbersome in certain instances when used in on-vehicle service.

To address this concern, GM Powertrain Engineering released the engine sealant in a 0.075 kg (75 gram) squeeze tube (packaged six to the carton, with nozzles) along with a new essential service tool, Sealant Dispenser GE-48326.

Sealant Guidelines
The GM Powertrain engineering specification for applying this sealant is an even bead, 3 mm (0.118”) in diameter. Due to the high viscosity of the sealant, a dispenser is required to meet this specification. The GE-48326 Sealant Dispenser provides the ability to apply the sealant to specification using one hand, even in areas not accessible, using the P/N 12378521 Engine Sealant cartridge and caulking gun.

This solitary engine sealant available in tubes and small cartridge is compatible with all synthetic, synthetic blends and mineral oils, as well as all engine coolants including DEX-COOL. The maximum working time of this sealant is 20 minutes. The sealant will be fully cured in 24 hours. The assembly may be filled with oil or coolant immediately after applying the sealant and tightening the bolts.

The 0.075 kg (75 gram) squeeze tube is not  available for 2008 and prior Saturn models (only in 150 g cartridges).

Courtesy of ALLDATA.

You May Also Like

Utilizing Fully Automatic A/C Equipment on Today’s Cars

As technology evolves, fully automatic A/C equipment becomes a greater necessity.

A/C knob

As auto technicians, we rely on our tools and equipment to help us perform our jobs efficiently and accurately. Much of the modern equipment designed for automotive service features automatic operation, or, at minimum, some automatic aspects. While this is often beneficial to technician productivity, it’s not always a necessity.

Brake Lathe Basics

Resurfacing drums and rotors is a machining process with its own specific guidelines.

Refrigerant Oil Has to Be Right

Oil type is just as important as oil capacity.

Three bottles of refrigerant oil
Top 5 Tools: Steve Coffell, Auto World, Hazelwood, MO

Steve Coffell, a technician at Auto World in Hazelwood, MO, says his Top 5 Favorite Tools are: Related Articles – New Colors for Mac Tools 2-pc. Silicone Tray Sets – Philips Xperion 6000 UV Pillar Earns Best New Tool Award – Continental Bundles Autodiagnos TPMS Tools, Sensors   OTC Genisys Touch – Quick scan, bidirectional control

Wheel Bearing Adjustment Tools & Equipment

A wheel bearing that’s out of adjustment can reduce bearing life and can affect more than just the bearing. It’s important to adjust the wheel bearing endplay to the proper specifications. If the bearing set is adjusted too loose or too tight, it can cause the bearing to fail prematurely. There are a few types of assemblies, so using correct procedures and tools will ensure a comeback-free wheel bearing installation.

Other Posts

Battery Chargers: Which one do you need?

Modern battery chargers adapt to diverse battery types and needs.

charging a car battery
Your Shops’ Online Presence is Your Strongest Tool

Having a strong online presence is a crucial tool for shops in the industry to thrive in the digital age.

The Human Connection

The human connection beats self-checkout when it comes to understanding and helping in forgetful moments.

Sales associate at auto parts store helping customer
When Your Digital is Dead: Reading Calipers and Micrometers

Need a refresher? Here’s a crash course.