99 Tahoe Won't Start

[rrb479]

For a while if it sat overnight it had to be cranked for a few seconds before it would finally fire. Then one day it wouldn't fire at all, I cranked it until the battery died and I flooded it. There was a strong smell of gas and I could hear the fuel pump kick on so I know it is getting fuel. I replaced the Ignition Control Module and it fired right up the first try. It ran fine for a few days then started having the same problem and now it is dead completely. I am thinking either the crankshaft positioning sensor, cam positioning sensor, or possibly the ignition switch. Any suggestions or ways to test these sensors? I appreciate the help.

1999 Tahoe 4WD 5.7 165K miles 40K miles on new motor

 

[strad]

Have you pulled codes? First thing I would do. Not all codes turn on the cel.

 

[SunlitComet]

just dont kill the batt or disconnect it before you try pulling codes.

 

[rrb479]

I am getting code P1351. It is the coil high output. I have never heard of a coil be intermittent though, when it dies it dies. Therefore I don't believe it is the coil. I have heard that the crank positioning sensor can give a false coil code but not sure. Thanks for the replies.

 

[SunlitComet]

you got it mixed up actually refer to this. http://www.sunlitcomet.com/pdf/automotive/tahoe/98-99/1999-chevy-tahoe-p1351.pdf