1999 GMC Yukon

Asked by May 08, 2016 at 03:41 PM about the 1999 GMC Yukon SLT

Question type: Maintenance & Repair

Yukon won't start. Engine cranks, does start, then
sputters out. If I give it gas, hisses and dies. Last
week I changed the crank sensor and it started and
ran fine, until the next day. Since then I have
changed crank sensor, cam sensor, fuel pump, fuel
filter, coil, ICM, and fuel pressure c regulator. I have
proper fuel pressure and fire at plugs. Any
suggestions?

3 Answers

12,805

I suggest you scan for codes. Also go back to the first part you changed the CKP inspect the connector and harness very closely make sure its intact no insulation off wiring not corroded etc.

Best Answer Mark helpful

Even though I hear the fuel pump engage, is it possible the relay can still be bad? Original part changed was crank sensor, and I've checked and changed a second time. I know it's a fuel issue because I can feed it gas through the throttle body and it stays running. As soon as I get itvrunning, heading to store to have it scanned.

If you can keep it running with yohr foot on the pedal then u might want to check the fuel rail and injectors and get them cleaned..if it didnt run at all then iv posted a how to fix in my first topic.. but if it runs and dies after a sec or two..then its the Security issue which can be solved and done by many ways..and you can bypass it with lot of options.

Your Answer

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