2005 GMC envoy XL won't start

Check the oxygen sensors.

Fuel filter is directly in front of gas tank, mounted on frame rail (picture below).

First check to see if you have a fuel filter. It will be located between tank and engine. Apparently, some Envoys do not have a filter, just a screen mounted on underside of fuel pump which is in fuel tank.

Go underneath the SUV and find the Fuel tank. from their find the gas line that runs to your engine. follow that line and eventually you will come across a circular piece attach to the line. Thats youre filter.

First, do not push the gas pedal at all when starting. There are many things that can cause a no start. A scan tool needs to be hooked up to see if there are any fault codes detected. This problem needs to be diagnosed by a trained mechanic.

check to see if there is spark by removing a spark plug wire and attaching a spark tester that you can buy from a local parts store for a dollar or two

Common problem on the 03-06 Envoy instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Envoy fuel gauge problems

It seems that there is a delay in fuel delivery to the engine. Check the fuel filter, the most common problem for fuel delivery. Hope this helps . Moe

Check your fuse, if the fuse is fine, check for broken wir or unplugged connection inside or out of tank.

Sending unit. Its all one unit including fuel pump, float, ect. The check engine light is because of the high or low resistance in the unit. Let me know if you have already fixed.. You have to drop the tank to get to it also.