have 1999 yukon denali will crank but not start

Asked by Sep 07, 2019 at 11:57 PM about the 1999 GMC Yukon

Question type: Maintenance & Repair

have 99 yukon denali  it will crank but not start i have replaced the following
cam sensor/crank sensor/plugs and wires/distributer cap and button /ignition
position sensor/fuel pump/fuel filter/all four o2 sensors/battery/ at wits end
dont know what it could be

4 Answers


If you can put a code reader on it, that should help. Check if you have spark and fuel to help narrow it down. Listen for the fuel pump to actually come on. Check to see if you have pulse to the injectors. You need to paly Sherlock Holmes here.

1 people found this helpful.

getting fuel and spark code reader is showing no codes


Engine coolant temperature sensor? Ignition switch? Timing belt/chain off a tooth? The trunk's just tired of you? Just brainstorming here.

1 people found this helpful.

will start for a few seconds if you spray starting fluid into air box but thats it

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