![]() ![]() When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it's because one of these components is missing from the mix. There are three very basic components that the engine, in your GM vehicle, needs to start and they are: air, fuel, and spark. If your vehicle is suffering a no-crank condition, this tutorial may be a good starting point: How To Test The Starter Motor (GM 4.3L, 5.0L, 5.7L). The most common problem, that causes this condition is a failed starter motor. This condition is usually due to a failed fuel pump, a failed ignition coil, a failed ignition control module, a failed crank sensor, etc., which lets the engine crank (turn over) but not start.Ī no-crank condition means that the engine is not turning over when you turn the key to crank the engine. ![]() In layman's terms, a no-start condition means that your vehicle's starter motor is cranking the engine but the engine is not starting. It's important to know that a no-crank and a no-start condition are not the same thing since this article only concentrates on testing a no-start condition. Difference Between A No Crank And A No Start Condition You can find this tutorial in Spanish here: Cómo Probar Un Arranca Pero No Prende (GM 4.3L, 5.0L, 5.7L) (at: ). No Start 4: Checking Engine Mechanical Condition.No Start 3: Checking The PassLock Anti-Theft System For Problems.Difference Between A No Crank And A No Start Condition. ![]()
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