Question about 1995-1997 Chevy 3500 Truck Ignition Starter Alarm Switch

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Camshaft sensor and crankshaft sensor does not corrilate,

Want to find out what timing is suppose to be se at?

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  • mikehumble May 11, 2010

    What year and what motor? If it is 350 1995 is different than 1996 and up?


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If the distributor has been pulled, it needs to be reinstalled as to fire on #1 TDC, To drop this distributor,
1) bring #1 piston to Top Dead Center (TDC) with the timing mark on the Harmonic balancer on the zero (or V groove),
2) Next the dist. will have a indentation (little dimple) at the very bottom of the shaft, while out of the motor, align that dimple with the white line on the oil pump flange (the ring that nestles on the oil pump) the white line should be vertical.
3) Now when you drop the dist. down to align with the cam, the rotor should rotate to a number stamped on the dist. base. Such as a # 8 for V8 or #6 for V6. This should now be setting correctly to fire on #1 while TDC. You'll have to be close on meshing the cam tooth because the distributor can really only fit against the back of the intake housing perpendicular.
4) Once you have this done slightly tighten the hold down clamp. The chances of it being dead on for timing are slim, so the timing will have to be adjusted with a programmable tech II scanner. Timing is not adjustable for this motor manually.
*Contrary to most people statements, There is no tan wire with a white tracer behind the glove box on this year (96-2000) This was discontinued after 1995, The only thing you accomplish by rotating the dist. is throwing the injectors out of wack because they are read by the CPS (Crank positioning sensor in reference to the Cam (Cam positioning Sensor) .Hope this helps.

Posted on Apr 25, 2009

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1996 and newer 350 the computer controls the timing and it has to be set with a scan tool at +or- 2degrees

Posted on Dec 15, 2008

  • mikehumble Dec 19, 2008

    Have you fixed your problem?


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