Starter/cranking problem

[uncjjm]

I have a 2004 tahoe. This morning it wouldn't start. It doesn't crank at all. I can hear the fuel pump come on and I have checked all the fuses. I'm sure it could be the starter but I've heard that starters don't usually just quit all at once. That they experince small failures before finally giving out. This is the first time I've had a problem with this vehicle. Any help would be great. Thanks in advance.

 

[bluetahoe2211]

if you have voltage check the CPS (crankshaft position sensor)

 

[bluetahoe2211]

When a crankshaft sensor has failed or is failing, certain timing problems will arise in engine function. The engine may start normally in some cases, but will cut off after a few minutes (or seconds) of operation. More than likely the engine will be unable to start at all. Since the crankshaft sensor is responsible for engine timing, the driver may experience engine backfire or irregular rpm function, if the vehicle starts at all.