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2002 Tahoe -- Starting problems

2001-Z71

By 2001-Z71
in Ask A GM Technician

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2001-Z71 Enthusiast

2001-Z71

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Vehicle -- 2002 Tahoe 2WD 43K miles.

 

My Tahoe developed a problem with hard starting. It will crank but not start for sometimes as much as 5-10 seconds. It has never failed to start. After this started to happen my SES light came on and the code was checked by a reputable shop and found to be the Fuel Composition Sensor (flex fuel). Sensor was replaced. The shop also advised that the fuel pressure regulator was not holding vacume so that was replaced also. No more SES light but I still have the cranking and no starting right away problem.

 

Important -- It seems to crank and not start when the fuel is low -- below 1/3 tank.

 

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