What would cause TrailBlazer not to start?
What would cause TrailBlazer not to start?
The most common causes that hinders normal starting operation of your TrailBlazer are dead key fob battery, dead 12v battery, corrosion on battery terminals, bad alternator, clogged fuel filter, broken starter, blown fuse, empty gas tank, immobilizer error or any fault in the electrical system.
How much is a fuel pump for a 2002 TrailBlazer?
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| This item Fuel Pump Assembly E3549M Replacement for 2002 2003 2004 Chevy Trailblazer L6-4.2L, 03 04 GMC Envoy XL V8-5.3L | |
|---|---|
| Customer Rating | 4.3 out of 5 stars (154) |
| Price | $4599 |
| Shipping | FREE Shipping. Details |
| Sold By | Auto Parts Outlets |
Why is my GMC Envoy engine not starting?
There are a lot of issues that can cause your Envoy to crank, but not start. The engine needs air, fuel, and a spark in order to run. It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code. It is definitely worth it to use an OBDII scanner to check and see if the engine has thrown any trouble codes.
Can a fuel pump cause a no start condition?
CASE 1: If your fuel pressure gauge read 50 PSI or more as the engine cranked. This means that the fuel pump on your 4.3L, 5.0L, or 5.7L is OK and not the cause of your No Start Condition. The next step is to observe the fuel pressure gauge’s needle (after your helper stopped cranking the engine).
Can a low fuel pressure cause a hard start?
Check your fuel pressure. 9 times out of 10 on these newer trucks, hard starts are caused by low fuel pressure (even 1 psi low). If I recall, key on, engine off should be 65+ PSI, and engine running should be 55 psi. This pressure is checked with a guage on the Schrader valve on the fuel line.
What should fuel pressure be on GM 4.3L Vortec?
You can find this tutorial in Spanish here: Cómo Probar La Bomba de Combustible (GM 4.3L, 5.0L, 5.7L) (at: autotecnico-online.com ). The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start.
