What can bring the emgine light on? - 2005 Chevrolet Avalanche

OK, so check your onboard computer system to find out why the computer is turning the check engine light on, and you will probably find out why your transmission is shifting hard.

take it to your local autozone or advanced auto and they will read the code for you. then repost the codes

bank 1 sensor 1 is the o2 sensor that you can see under the hood, the one after the cat is sensor 2

i need diagram timming mark 2002 landrover freedlander 2.5l

Is the check emgine light on if so have it checked and the code extracted. Also could be the crank sensor. It is always very important to have the codes checked if there are any it gives us more of an idea of what could possibly be wrong with it.

sounds like a mass airflow sensor.

main emgine fan starts when engine switch off, had all cooling works done..... could it be fule pump. A3 01

Either take it to a mechanic, or buy an ODB-II scan tool to reset the codes yourself.

problem could be gas cap not on tight or leaking.or it could be the purge control solenoid inoperative.the dealership has to check the emission control system.

check the fuel injectors