Tremors 2: Aftershocks is a 1996 American comedy horror film and the sequel to Tremors (1990). In the film, Earl Bassett, returning from the first film, is hired to deal with a subterranean "graboid" infestation at a Mexican oilfield. It was directed by S. S. Wilson, and stars Fred Ward, Christopher Gartin, Helen Shaver, Marcelo Tubert, and Michael Gross.

The film is the second in the Tremors franchise. It was followed by a 2001 sequel, Tremors 3: Back to Perfection.

Years after the events of the first film, Val McKee has moved away and married Rhonda LeBeck, while Earl Basset has squandered his fortune on a failing ostrich ranch. He is approached by Carlos Ortega, who informs him that Graboids are killing his workers at his oil field in Chiapas, Mexico, and hires him to hunt them down. Earl initially declines, but Ortega's taxi driver, Grady Hoover, convinces Earl to change his mind after mentioning that Ortega will pay $50,000 for each Graboid killed; both join the hunt. Upon arrival, Earl learns that the company would pay him double if he caught one of the creatures alive. He also meets geologist Kate Reilly, her assistant Julio, and a mechanic named Pedro, all of whom are conducting scientific investigations into the Graboids.

Earl and Grady begin systematically killing the Graboids by using remote-controlled cars rigged with explosives. Though their strategy seems to work, the vast number of Graboids overwhelms them, and Earl enlists the help of Burt Gummer, who arrives with a deuce loaded with firearms and explosives. The next day, Earl and Grady are surprised by a Graboid, causing them to back up in a panic and crash the truck into an incline. Returning to where they saw the Graboid, Earl and Grady find the creature sick and nonaggressive, with all its tentacles mysteriously dead. Realizing they have one of the creatures alive (which Ortega offered $100,000 for), they call Pedro to come pick them up, along with the Graboid.

However, the Graboid later begins making horrific and painful sounds and is soon found dead with a huge hole torn open in its body. They see Pedro's truck approach from a distance, but it suddenly stops, prompting Grady and Earl to investigate and discover the truck’s destroyed engine as well as Pedro’s remains. They make their way to a nearby radio broadcasting building, which has similarly been destroyed, only to be met by strange bipedal graboid-like creatures. Earl successfully kills one as it charges him, but the two flee in a car they had found as more of the creatures arrive. Meanwhile, Burt's truck is ambushed by a pack of these new creatures while returning to base.

The following morning, the creatures have made their way to the oil refinery, where Julio is violently killed by one. Grady and Earl arrive before it can kill Kate, with Burt arriving shortly thereafter after a near-fatal firefight that has left him drained of ammunition. Through experimentation, the group discovers that these creatures (now dubbed 'Shriekers') are hermaphrodites that can replicate at an incredible rate after eating enough food. They also learn that the creatures are deaf, but can see heat through special infrared receptors on their heads. They are attacked by the Shriekers, who have discovered Burt's MRE supply and have rapidly multiplied. They run for Julio's car, but Burt accidentally disables it while killing a Shrieker.

Hiding from the Shriekers, Burt is trapped in a bulldozer while Grady, Kate, and Earl are on top of an oil tower. The Shriekers work together to climb the tower, only for Burt to trap them in the storage shed with the truck. However, they discover that rice flour is also stored inside, enabling the Shriekers to continue multiplying. Earl douses himself in CO₂ from a fire extinguisher to hide his body heat and tries to find Burt's explosives amongst the Shriekers, who have greatly multiplied. While the plan initially works, the CO₂ quickly wears off, and the Shriekers detect his body heat, forcing Earl to throw the detonator among Burt's supplies before escaping. The group manages to escape before a massive explosion devastates the entire facility, killing all of the Shriekers. In the aftermath, Earl and Kate decide to pursue a relationship, while Grady suggests opening a Graboid-themed theme park due to the money Ortega now owes them.

Tremors 2: Aftershocks began production in 1993 when MCA Universal (feature films division) liked the script. The film was originally planned to be filmed in Australia on a 17-million-dollar budget, with the proposal that Kevin Bacon and Reba McEntire would both be returning. McEntire declined due to a major tour she had currently been on, and Bacon, while intrigued, ultimately turned it down to do Apollo 13. Due to the lack of star power and the mediocre box-office performance of the first film, the distribution and promotional costs for a theater release were considered too high, and the feature film division lost interest. The film was on the verge of being canceled entirely due to high costs when several actors and effects artists offered to lower their rates or do the jobs for free just to help the film get produced; this included S.S. Wilson, who offered to direct the film for free to save money on hiring another director.