Review Of Stealth Module Check Engine Light Ideas. The most common reason for a check engine light on install is due to the truck not being asleep. Web the check engine light — more formally known as the malfunction indicator lamp (mil) — is a signal from the car's engine computer that something is wrong.

Web check engine light or hard start on install? Drop it off at our shop and pick it up a few hours later, or save time and have our delivery mechanics come to you. The best alternative to a flash tuner.