Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
My friend has a Chevy 2004 Chevy avalanche with a 5.3 liter. About a month ago he lost spark. The local garage told him they removed the battery ground cable and cleaned it and truck ran. About a week later same thing has happened. Is the problem a bad chassis ground. Where can I find a wiring diagram for this vehicle to help me diagnose ad fix for my friend?
hi sir a loss of spark might be a crank sensor problem and the symptom of intermittent start might also be a crank sensor problem a circuit integrity/signal circuit integrity testing might be ijn order all the way to computer but I have a feeling something else might be going on do you have any more info thanks
