Ask our auto mechanics for help to all your GMC truck questions.
depends on what you are driving on. it will give you more traction on a dirt road. It won't add any power to the engine output. It will probably give you a slight loss in power output because you are adding more load to the power train. But not a noticeable amount most likely. If you are thinking about like when you are pull a long grade on the highway, no, it won't help you. Unless you rear wheels are loosing traction, 4wd won't help your engine get you up the hill.
Browse "SIMILAR TOPICS" At The Bottom Of This Page.