To create an animated GIF from your front-view truck SVG using the SVG Animation Generator, follow these specifications:

1. Headlights Animation: Implement a flickering glow effect for the headlights, alternating brightness to simulate activity. This can be achieved by animating the opacity and fill color of the headlight elements.

2. Wheels Animation: Add a spinning effect to the wheels. This can be done by rotating the wheel elements around their center point, creating the illusion of motion.

3. Grill Animation: Apply a shimmering gradient effect on the truck grill to mimic light reflection. This can be achieved by animating the gradient stops or using a combination of opacity and translation effects.

4. Exhaust Smoke Animation: Animate the exhaust smoke to rise from the exhaust pipe. This can be done by creating a smoke SVG element and animating its position and opacity to simulate rising smoke.

5. Body Bounce Effect: Introduce a slight bounce effect on the truck body to mimic suspension movement. This can be achieved by animating the vertical position of the truck body with a smooth easing function.

6. Smooth Transitions: Ensure all animations have smooth transitions to create a seamless loop. This can be accomplished by using easing functions and timing adjustments for each animated element.

7. Design Style: Maintain a professional yet modern design style with clean, polished movements throughout the animation.

These specifications will help you create a dynamic and engaging animated GIF that brings your front-view truck SVG to life.