2003 GMC Yukon XL "check gas light" Questions

the check engine light is on and daily a display "tighten gas cap" goes on with the gas cap tight? the seal on the cap itself has gone bad,, replace the cap

...light flaches at speeds above 30. You probably have water in your fuel . Use some Stabil healthy dose and then some isopropyl alcohol gas line antifreeze that Will probably fix it . and fill it at a ...

check engine light on and tighten gas cap comes on. I've replace the gas cap and it still happens. 2006 Denali 6.0L engine I just repaired this problem this past weekend. It is the Emission ...

check engine light, however the TPS(throttle position sensor) or EGR Valve(exhuast gas recirculation valve) could be potential causes. Does this problem only occur at idle? Is the idle normal in park?

...gas hand is stuck on a quater tank, speedomder doesn't move, the rpm hand doesn't move either There are at least 4 fuses in the box in the engine compartment that power the ...

...gas tank. What could this be? Missing is usually associated with the ignition system. Check the ignition module and possibly try to check the individual spark plugs. The easiest and safest way to do ...

gas. Could be fuel filter or leaky vacuum lines. If you have check/service engine light on, you may have faulty 02 sensors or idle positon sensor and possibly throttle position sensor could be faulty.

Check Engine light-2003 Yukon XL Driving home from Florida and needed gas. Filled up with gas that pump stated ''no more than 10% ethanol''. Shortly thereafter (next day) check engine light came on. ...

...GAS IT WILL DAMAGE THE FUEL PUMP.HAS TO BE REPLACED. You should hear more of a humming sound, not just a click ,that should shut off after a few sec, IF I UNDERSTAND you, it don't turn over, have the ...

gas pedal my car wont go above 20 mph. Pressed harder and still wont accelerate to much more. Engine wont even rev up it kind of just stays at a slow steady pace Is the check engine light on ? Exhaust