I have a 1995 cheverolet 3500 5.7 litre. I removed the distributor cap wires and got them mixed up. Do you have a manual or something that I can use to as a basis to put the wires back correctly? Thanks, Tom

O2 sensor I'm guessing .. I t would be the second one back on the side with cylinder one on it , the distributor cap is marked on the number one cylinder wire

The ignition module is under the distributor cap. Mark the spark plug wires location then remove the cap. Remove the 2 screws and connectors.

if it was running fine before you changed the cap and rotor just make sure you put the spark plug wires back in the same spot you might have got them mixed up

They may be right. I cannot find the part. here is what the manual says:

REMOVAL & INSTALLATION The camshaft position sensor is located inside the distributor. On some distributors, the camshaft position sensor is not serviceable (replacement parts may not be available separately). If the camshaft position sensor is serviceable, use the following procedure.

1. Remove the distributor cap and wires.
2. Remove the rotor.
3. Remove the camshaft position sensor cap.
4. Remove the camshaft position sensor mounting screws.
5. Carefully remove the camshaft position sensor.

To install:

1. Position the camshaft position sensor in the distributor and tighten the mounting screws securely.
2. Install the camshaft position sensor cap.
3. Install the rotor.
4. Install the distributor cap and wires.

This is for PGM-IG ignition coil type, there is also electronic ignition igniter on the distributor type.

1. Disconnect the negative battery cable.
2. Remove the distributor cap retaining screws and remove the distributor cap and seal. Slide off the leak cover.
3. Remove the two screws that retain the BLK/YEL and WHT/BLU wires from the terminals in the distributor.
4. Remove the screws that retain the coil and remove the coil from the distributor body. To install:
   
5. Install the coil in position and tighten the screws securely.
6. Reconnect the two leads and install the leak cover.
7. Install the distributor cap and seal.

Question 4.3 Litre V6 or 2.2 Litre inline 4 cyl.

Procedure as follows: in either case remove # 1 cyl spark plug and rotate engine until # 1 piston is at top dead center , with a suitable marking pen make a reference mark on crankshaft harmonic balancer and timing mark indicator on engine timing cover. Make a notation on the distributor cap of the number one spark plug wire and also note the remaining wires firing order sequence on cap in order of rotation. Remove cap and note and mark rotor location , make a reference point on distributor body as well as engine block . Remove cap and wires , loosen distributor lock down bolt , disconnect distributor wire harness and label harness for reference to reconnect upon re-installation. Twist as you pull up on distributor , distributor should come out freely with minimal effort but occasionally they can be a little tough and need to be helped out with minimal extra persuasion...

If you find that upon re-install you get a trouble code P1345 don't threat just start over the process of placing # 1 cyl at TDC and then reference the marks you made during dismantle, There is a + - 3 degrees tolerance that the computer can adapt... But you will have to erase any trouble codes... You should not have to remove the hood, maybe just the air box and or filter housing for easier access.... Unless you are removing entire engine then yes remove hood by all means, mark hood hinges and mounting holes before removing for easier alignment during install of hood... Hope this helps...

Have you installed any tune-up parts? These are common for having bad distributor caps.

make sure the number one piston is on top dead center on the compression stroke, and the timing marks are aligned on the balancer, drop in the distributor with the rotor facing th # 1 terminal on the cap.

CHECK THE THROTTLE CABLE . IS HOLD THE TPS SENSO ON . MAP SENSOR IS OK

On the distrubutor cap looking from front no 1 is around the 1 o'clock postion(usually marked on the cap with no. 1) the firing order is 13726548 counter clockwise.
cylinders are passenger side front to rear 1234 and drivers side 5678