Questions & Answers for: Hummer H2 no spark

...Back. The firing order is: Driver side, 1,3,5,7,. Passanger Side 2,4,6,8. Primary circuit. Is the Spark Plug Wire. Secondary circuit. Is the Electrical connector on the Ignition Coil. Check the ...

How do I remove the spark plug wires? 2003 H2. Spark plug replacement. Do I just pull on the metal tube covering the spark plug to get access to the spark plug? I'm afraid I'll damage the wire if I ...

low engine endurance message window reads low engine endurance, in my 03 hummer h2 CHECK AIRFILTER,CLEAN FUEL INJETOR,SPARK PLUGS WIRES AND COILS .YOUR BEST SHOT TAKE YOUR TRUCK FOR A DIACNOSIS .

How do I change my H2 06 Ignition coils and spark plugs when you open the hood on your H2 the is a cover over the top of the motor. to remove it you have to remove the oil filler cap and pull out the ...

...knock is present. If the KS system determines that excessive knock is present, the PCM retards the spark timing based on the signals from the KS system. The PCM then retards the timing until no

2003 h2 misfires and engine hesistates then shuts off i changed the ignition coils spark plugs and wires and same thing like the car is breathing heavy so i unplugged the battery to reset the computer

What is the spark plug gap ,on a 2003 h2 hummer. what size engine did they come with. make it easy on yourself call the auto part store were you bought your plugs they should have told you proper gap ...

...my 2003 h2 coolant sensor is located?? ECT sensor is located on front of left cylinder head, above spark

change spark plugs Disconnect the spark plug wire at each spark plug.Twist each spark plug 1/2 turn.Pull only on the boot in order to remove the wire from each spark plug.Disconnect the spark plug ...

2003 H2 will not start, not getting spark at plugs The crankshaft position sensor could be the cause , but without testing that would just be a guess . There are videos on youtube for testing GM ...