GMC Engine Mount

The capabilities of a GMC vehicle are not primarily for a hunky-funky street ride but for extreme driving performance like going over mountainous and rugged terrain. It just follows that a GMC ride predisposes its auto body parts and engine parts to extreme driving conditions.

To support your GMC engine from possible defects, a flexible support called the GMC engine mount is used in which an elastic medium, usually a rubber, is placed between the lugs on the engine and the frame of the vehicle. Earlier vehicles used simple design of engine mounts which is in the form of big slab of rubber placed in between two chunks of flat steel. As the automobile technology progressed, modern engine mounts including the one installed in your GMC vehicle are precisely engineered with definite shapes, rubber hardness and air gaps that tune the mount to the engine.

The engine mount can be hydraulic or electronically controlled. Engine mounts with hydraulic chambers are used to reduce engine vibration and noise. It comes in a circular shape with a metal shell that is filled with silicone fluid. This design however, is prone to have leaks internally and externally due to cracks in the rubber surface. An electronically-controlled GMC engine mount has two fluid chambers connected by a large orifice which is kept closed by a valve and a small orifice which is always open. The idle shaking of the engine is absorbed when the vacuum diaphragm causes the rotary valve to open the large orifice so that more fluid can flow between the chambers.

In traverse engine vehicles, the engine mount at the front end of the engine is exposed to excessive movement since it reacts to both vertical and fore-aft shake. The constant pulling up and down makes the engine mount vulnerable to damage. When your GMC vehicle starts to shake even in a stop mode, might as well check your GMC engine mount. Inspect for possible cracks or twisted out shape that might have been the cause of your GMC engine mount failure. A rubber designed GMC engine mount once it becomes defective calls for a total replacement.

Do not settle for a repaired GMC engine mount because in the long run it will not do any good at all. A brand new and genuine GMC engine mount is always available at Parts Train any time you need it. Just browse through our online ordering system and pick your choice. You may also call us toll-free for assistance in all your GMC replacement parts needs.