Check Engine Light

[richardak]

I have 97 Tahoe 4wd 5.7L. I get a check engine light, but it does not come on all the time. Some time it does not come on at all. I took the car to AutoZone to have them check to see what was causing it and the salesman told me that it is caused by misfiring and he suggested that I do a tune up. I put in new wires, plugs, distributor and rotor but the light is still on. Can someone tell me what is causing this and how I can fix it?

 

[GMCYukalade]

Did the autozone rep tell you what code the truck was throwing? its a P#### code

 

[richardak]

No, he did not say what the code was. Should I go back and find out?

 

[GMCYukalade]

yes that would be great

 

[richardak]

I will get that info tomorrow. Thanks

 

[richardak]

The code is P1345

 

[Raider]

p1345 "cam sensor/ crank sensor relationship error" I think. A couple of lite taps on the crank sensor when running, Engine dies, replace crank sensor.

 

[richardak]

Where is this sensor located?

 

[Raider]

In the late 80s early 90's they were on the front of the engine. They picked up information off of a crank pulley or a ring on the outside of the crank pulley. Looks like for your model it is near the back of the engine. Here is a pic of the part. http://info.rockauto.com/SMP/SMPDetail3.html?PC123.html You would need to consult a SM more more details.

 

[richardak]

Thanks! I will give it a shot and see what happens.