Code P0341 on 2006 impala 3.5L engine where's the camshaft sensor and how do I get to it? Do I have to remove anything? Pulley? Pump? Belt? Etc

What engine does your impala have ? could have one of three different ones 3.5 , 3.9 , or 5.3 L !
Camshaft Position (CMP) Sensor (LZE, LZ4, LZ8) Under the power steering pump, in the center of the engine block above the timing cover
Camshaft Position (CMP) Sensor (LS4)
In the timing cover, to the left of the water pump pulley

Removal & Installation

3.5L Engine

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Record the radio anti theft code data.
3. Remove or disconnect the following:
   
   Negative battery cable Engine cover Accessory drive belts Idler pulley Crankshaft pulley Power steering pump pulley Belt tensioner pulley Upper and lower timing belt covers
   
4. Support the engine with a floor jack and remove the engine mount.
5. Rotate the engine to align the camshaft sprocket timing marks with the cylinder head cover timing marks.
   
   

   Fig. Timing belt routing and timing marks-3.5L Engine
   

6. Remove or disconnect the following:
   
   Auto tensioner Timing belt
   
   

   Fig. Timing belt and related components-3.5L Engine
   
   

To install:

1. Ensure that the engine is set to Top Dead Center (TDC).
2. Prepare the auto tensioner for installation by compressing it in a vise and installing a retaining pin.
3. Install the timing belt in the following order:
   1. Crankshaft sprocket
   2. Idler pulley
   3. Left bank exhaust camshaft sprocket
   4. Left bank intake camshaft sprocket
   5. Water pump pulley
   6. Right bank intake camshaft sprocket
   7. Right bank exhaust camshaft sprocket
   8. Tensioner pulley
   
   
4. Install the auto tensioner. Do not remove the retaining pin at this time.
5. Check that the crankshaft and camshaft timing marks are aligned correctly.
6. Rotate the crankshaft 1 / 4 turn Counterclockwise .
7. Rotate the crankshaft 1 / 4 turn Clockwise to return the engine to TDC.
8. Loosen the tensioner pulley center bolt.
9. Apply 44 inch lbs. (5 Nm) torque to the tensioner pulley as shown and tighten the center bolt to 32-41 ft. lbs. (43-55 Nm).
   
   

   Fig. Adjusting the tensioner pulley-3.5L Engine
   

10. Remove the auto tensioner retaining pin.
11. Rotate the crankshaft 2 revolutions Clockwise , then wait 5 minutes for the auto tensioner to adjust.
12. Measure the auto tensioner rod as shown. If the measurement is not 3.8-4.5 mm, then repeat the belt tensioning procedure.
    
    

    Fig. Measuring the auto tensioner rod-3.5L Engine
    

13. When the auto tensioner measurement is correct, install or connect the following:
    
    Engine mount Upper and lower timing belt covers Belt tensioner pulley Power steering pump pulley Crankshaft pulley Idler pulley Accessory drive belts Engine cover Negative battery cable
    
14. Reprogram the radio anti theft codes

For The 3.0 Motor. (3.3 Way down the line.)

Drain cooling system.
Remove timing belt. Refer to Engine for procedure.
Remove water pump mounting bolts.
Separate pump from water inlet pipe and remove water pump.

Timing Belt Removal
Raise vehicle and remove accessory drive belt splash shield (Fig. 66).
Remove accessory drive belts.
Remove crankshaft pulley and damper (Fig. 68).
Support engine and remove right side engine mount.
Remove engine support bracket (Fig. 67).
Remove timing belt covers (Fig. 67).
Mark belt running direction for installation (Fig. 69).
Loosen timing belt tensioner bolt (Fig. 71) and remove timing belt.
Remove crankshaft sprocket flange shield (Fig. 68). CAMSHAFT SPROCKETS To remove camshaft sprockets
Hold camshaft sprocket with Spanner Tool MB-990775. Loosen and remove bolt and washer (Fig. 70).
Remove camshaft sprocket from camshaft. To install camshaft sprockets:
Place camshaft sprocket on camshaft.
Install bolt and washer to camshaft. Using Spanner Tool MB-990775, hold camshaft sprocket and torque bolt to 95 Nm (70 ft. lbs.) (Fig. 70). TIMING BELT TENSIONER
Install timing belt tensioner and tensioner spring.
Hook spring upper end to water pump pin and lower end to tensioner bracket with hook out (Fig. 71).
Turn timing belt tensioner counterclockwise full travel in adjustment slot and tighten bolt to temporarily hold this position (Fig. 72).

INSTALLATION


Install timing belt on crankshaft sprocket and keep belt tight on tension side (Fig. 69). Install belt on the front (radiator side) camshaft sprocket. Install belt on the water pump pulley, rear camshaft sprocket and finally on the timing belt tensioner.
Rotate the front camshaft sprocket in opposite direction to take up belt slack. Check that all timing marks are aligned (Fig. 69).
Install crankshaft sprocket flange (Fig. 68).
Loosen tensioner bolt and allow spring to tension timing belt.
Turn crankshaft two full turns in clockwise direction. Turn smoothly and in clockwise direction ONLY.
Align the timing marks on the sprockets and tighten the timing belt tensioner locking bolt to 28 Nm (250 in. lbs.) torque.
Install timing belt covers.
Install engine support bracket.
Install right side engine mount.
Install crankshaft damper and pulleys (Fig. 68). Tighten damper center bolt to 135 Nm (100 ft. lbs.) .
Install accessory drive belts.
Install accessory drive belt splash shield (Fig. 66).

Be sure to also replace all the cam and crank seals why you are there. Might as well put a belt on too.

FOR THE 3.3 OR 3.8 MOTORS.

Drain Cooling System.
Remove accessory drive belt.
Remove right front lower fender shield.
Remove water pump pulley bolts and remove pulley.
Remove water pump mounting screws. Remove water pump.
Remove and discard O-ring seal.
Clean O-ring groove and O-ring surfaces on pump and chain case cover. Take care not to scratch or gouge sealing surface

Installation

Install new O-ring into groove.
Install water pump to chain case cover. Tighten screws to 12 Nm (105 inch lbs.) .
Rotate pump by hand to check for freedom of movement.
Position pulley on pump. Install screws and tighten to 30 Nm (250 inch lbs.) .
Install accessory drive belt.
Install right front lower fender shield.
Refill Cooling System.

FOR THE 2.4 MOTOR

Disconnect negative cable from battery.
Raise vehicle on a hoist. Remove right inner splash shield.
Remove accessory drive belts.
Drain cooling system.
Support engine from the bottom and remove right engine mount.
Remove right engine mount bracket.
Remove timing belt. Refer to Engine for procedure.
Remove timing belt idler pulley.
Hold camshaft sprocket with Special tool C-4687 and adaptor C-4687-1 while removing bolt. Remove both cam sprockets.
Remove rear timing belt cover.

Install new O-ring gasket in water pump body O-ring groove. CAUTION: Make sure O-ring is properly seated in water pump groove before tightening screws. An improperly located O-ring may cause damage to the O-ring and cause a coolant leak.
Assemble pump body to block and tighten screws to 12 Nm (105 inch lbs.) . Pressurize cooling system to 15 psi with pressure tester and check water pump shaft seal and O-ring for leaks.
Rotate pump by hand to check for freedom of movement.
Install rear timing belt cover.
Install camshaft sprockets and torque bolts to 101 Nm (75 ft. lbs.) .
Install timing belt idler pulley and torque mounting bolt to 61 Nm (45 ft. lbs.) .
Install timing belt. Refer to Engine for procedure.
Install right engine mount bracket and engine mount. Refer to Engine for procedure.
Fill cooling system.
Install accessory drive belts.
Lower vehicle and connect battery cable.

the crankshaft sensor is located right behind the harmonic balancer mounted on the timing cover-.on the 3.8 , The camshaft position sensor is located behind the water pump pulley on the left side of the engine block. it has a 3 wire connector. you have to remove serpintine belt and water pump pulley to access it.I believe there is ( 4-8mm bolts) to remove. ON THE 3.1 IT IS UNDER POWER STEERING PUMP ON BELT SIDE. REMOVE THE BELT THEN REMOVE AND SET STEERING PUMP TO THE SIDE, BUT DO NOT REMOVE ANY POWER STEERING HOSES FROM IT. have a good day ! if its a differant engine, just repost.

1. Record the radio anti theft code data.
   
2. Remove or disconnect the following:
   
   Negative battery cable Engine cover Accessory drive belts Idler pulley Crankshaft pulley Power steering pump pulley Belt tensioner pulley Upper and lower timing belt covers
   
3. Support the engine with a floor jack and remove the engine mount.
4. Rotate the engine to align the camshaft sprocket timing marks with the cylinder head cover timing marks.
   
   

   Fig. Timing belt routing and timing marks-3.5L Engine
   

5. Remove or disconnect the following:
   
   Auto tensioner Timing belt
   
   

   Fig. Timing belt and related components-3.5L Engine
   
   

6. 
   

To install:

1. Ensure that the engine is set to Top Dead Center (TDC).
2. Prepare the auto tensioner for installation by compressing it in a vise and installing a retaining pin.
3. Install the timing belt in the following order:
   1. Crankshaft sprocket
   2. Idler pulley
   3. Left bank exhaust camshaft sprocket
   4. Left bank intake camshaft sprocket
   5. Water pump pulley
   6. Right bank intake camshaft sprocket
   7. Right bank exhaust camshaft sprocket
   8. Tensioner pulley
   
   
4. Install the auto tensioner. Do not remove the retaining pin at this time.
5. Check that the crankshaft and camshaft timing marks are aligned correctly.
6. Rotate the crankshaft 1 / 4 turn Counterclockwise .
7. Rotate the crankshaft 1 / 4 turn Clockwise to return the engine to TDC.
8. Loosen the tensioner pulley center bolt.
9. Apply 44 inch lbs. (5 Nm) torque to the tensioner pulley as shown and tighten the center bolt to 32-41 ft. lbs. (43-55 Nm).
   
   

   Fig. Adjusting the tensioner pulley-3.5L Engine
   

10. Remove the auto tensioner retaining pin.
11. Rotate the crankshaft 2 revolutions Clockwise , then wait 5 minutes for the auto tensioner to adjust.
12. Measure the auto tensioner rod as shown. If the measurement is not 3.8-4.5 mm, then repeat the belt tensioning procedure.
    
    

    Fig. Measuring the auto tensioner rod-3.5L Engine
    

13. When the auto tensioner measurement is correct, install or connect the following:
    
    Engine mount Upper and lower timing belt covers Belt tensioner pulley Power steering pump pulley Crankshaft pulley Idler pulley Accessory drive belts Engine cover Negative battery cable
    
14. Reprogram the radio anti theft codes.

PATH: Engine Mechanical > Engine Mechanical Components > Timing Belt & Sprockets > Removal & Installation Removal & Installation

1. Disconnect the negative battery cable.
   
2. Position crankshaft so that No. 1 piston is at Top Dead Center (TDC).
   
3. Remove the splash guard.
   
4. If equipped, remove the cruise control actuator.
   
5. Loosen and remove the power steering pump drive belt.
   
6. Remove the two bolts that attach the top power steering hose to the power steering pump. Cover and seal the hose and the open port of the pump.
   
7. Clamp shut the power steering reservoir return hose, remove it from the return line, and remove the power steering pump and reservoir as an assembly.
   
8. Remove the remaining accessory drive belts. Refer to Section 1 for specific details.
   
9. Place a piece of wood between the oil pan and the jack, support the engine with a jack.
   
10. Remove upper engine bracket.
    
11. Remove the valve cover.
    
12. Make sure the engine is at Top Dead Center (TDC) for No. 1 cylinder. The engine is at TDC for No. 1 cylinder when:
    
    • The white Top Dead Center (TDC) mark on the crankshaft pulley is aligned with the raised pointer.
      
    • The UP marks on both camshaft sprockets are at the topmost (12 O'clock) position.
      
    • The holes in the No. 1 exhaust and intake cam journals align with the holes in the camshaft. A 4.5 mm or 5/32inch drill bit or Allen key can be placed through the holes to prevent the cams from rotating while removing or installing the cam belt.
      
13. Remove the crankshaft pulley. For details, see crankshaft pulley removal in this section.
    
14. Remove the timing belt covers.
    
15. Loosen the adjusting bolt 1/2-1 turn. Release the tension from the belt by pushing on the tensioner, then retighten the adjusting bolt.
    
16. Remove the timing belt.
    

To install:

1. Be sure the timing marks are properly aligned.
   
2. Install the timing belt around the crankshaft sprocket and then stuff a clean rag or paper towel between the belt and the sensor guard to hold the belt engaged with the sprocket teeth.
   
3. Place the flat side of the belt clockwise around the top of the tensioner and then engage the toothed portion of the timing belt counterclockwise around the bottom of the water pump sprocket.
   
4. Carefully pull the timing belt upward but do notmove the crankshaft. If the crankshaft moved, carefully realign the crankshaft timing belt sprocket with the TDC marks. Carefully engage the teeth of the timing belt onto the exhaust camshaft sprocket, but only install the belt about 1/3 of the way onto the sprocket.
   
5. Grasp the timing belt on the toothed side and gently lift the belt enough to begin sliding it onto the intake camshaft sprocket.
   
6. Once the belt has started to slide onto the intake camshaft sprocket, slide the belt equally onto both the intake and exhaust camshaft sprockets.
   
7. Quickly loosen and then retighten the timing belt tensioner bolt.
   
8. Remove the tools from the camshaft caps used for securing the camshafts, and remove the cloth used to keep the timing belt engaged in the crankshaft sprocket.
   
9. Apply a clockwise load on the intake camshaft sprocket bolt to remove any slack between the intake camshaft sprocket, exhaust camshaft sprocket and the crankshaft timing belt sprocket, then loosen and retighten the timing belt tensioner adjusting bolt to allow tension to be applied to the belt.
   
10. Install the crankshaft pulley sprocket/timing belt guide washer.
    
11. Install the lower and upper timing covers.
    
12. Install the crankshaft pulley and tighten the bolt to 130 ft. lbs. (177 Nm).
    
    WARNING

    If any binding is felt when adjusting the timing belt tension by turning the crankshaft, STOP turning the engine, because the pistons may be hitting the valves.
    
    

13. Rotate the crankshaft about 5-6 times counterclockwise to seat the timing belt.
    
14. Position the No. 1 piston to TDC.
    
15. Locate and remove the rubber plug for the timing belt tensioner on the lower timing belt cover.
    
16. Loosen the adjusting bolt 1/2 turn by
    
17. Rotate the crankshaft counterclockwise 3 teeth on the camshaft pulley.
    
18. Tighten the adjusting bolt to 40 ft. lbs. (54Nm).
    
19. Retighten the crankshaft pulley bolt to 130 ft. lbs. (177 Nm).
    
20. Install the valve cover.
    
21. Install the engine mounting bracket, then remove the jack.
    
22. If removed, install the cruise control actuator.
    
23. Install the accessory drive belts.
    
24. Install the splash guard.
    
25. Connect the negative battery cable.
    
26. Check the engine operation and road test.
    

WARNING

Never allow antifreeze, oil or solvents to come into with a timing belt. If this occurs immediately wash the solution from the timing belt. Also, never excessive bend or twist the timing belt; this can damage the belt so that its lifetime is severely shortened.

I have pasted the instructions from autozone.com below, but I never recommend this chore for a novice. If the valve timing is not right, it can ruin your engine. If you have not done this before, I recommend you at least have a mechanic look at the belt before you close up the timing cover.


Removal & Installation

1.7L Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Note the radio security code and the radio presets. Disconnect the negative battery cable.
3. Rotate the crankshaft to set the engine at Top Dead Center (TDC) on the compression stroke for the No. 1 piston. The white mark on the crankshaft pulley should align with the pointers on the timing cover. Once the engine is in this position, it must not be disturbed.
4. Raise and support the vehicle safely. Remove the front tires. Remove the splash shield. Lower the vehicle.
5. Remove the power steering pump and position it to the side without disconnecting the hoses. Remove the alternator.
6. Remove the ignition coil cover. Remove the four ignition coils. Remove the throttle cable clamps and harness holder mounting bolts. Remove the cylinder head cover. Remove the crankshaft pulley.
7. Properly support the engine using a block of wood under the oil pan. Remove the upper bracket.
8. Remove the grommet from the upper cover. Disconnect the camshaft position (CMP) top dead center (TDC) sensor connector.
9. Remove the side engine mount bracket.
10. Remove the crankshaft position (CKP) sensor from the oil pump, without disconnecting the connector.
11. Apply slight force to the timing belt at the midpoint between the camshaft pulley and the water pump pulley and check that the auto tensioner moves smoothly, if not replace it.
12. Move the auto tensioner to remove tension from the timing belt. Remove the timing belt.

To install:

Fig. TDC alignment mark locations for the crankshaft sprocket-1.7L engine

Fig. Timing belt sprocket TDC mark positioning for timing belt installation-1.7L engine

1. Set the crankshaft to TDC. Align the TDC mark on the timing belt drive pulley with the pointer on the oil pump.
2. Set the camshaft to TDC. The UP mark on the camshaft pulley should be at the top. Align the TDC marks on the camshaft pulley with the top edge of the cylinder head.
3. Install the timing belt in a counterclockwise sequence, starting with the drive pulley.
4. As required, replace the auto tensioner assembly.
5. Continue the installation in the reverse order of the removal procedure.
6. Reprogram the ECM/PCM engine idle characteristics. Be sure all electrical items are OFF.
7. Start the engine. Hold the idle speed at 3000 RPM-s in park or neutral until the radiator fan comes on or the temperature reached 194 degrees.
8. Let the engine idle for about five minutes with the throttle fully closed.
9. If the radiator fan comes on during the five minutes, do not count this toward the five minute programming time.
10. Set the clock.

3.0L Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Disconnect the negative battery cable.
3. Drain the engine coolant.
4. Remove or disconnect the following:
   Wiper and blade assembly Top cowl seal and panel Window washer hoses, from the ventilator louvers Left and right ventilator louvers Heater air duct Timing belt
5. Mark the left and right camshaft pulleys with a touch of paint.
6. Remove or disconnect the following:
   NOTE Be sure not to mix up the pulleys.
   Right and left camshaft pulleys bolts Pulleys from the engine
   No. 2 idler pulley by removing the bolt 3 clamps and engine wire from the rear timing belt cover 6 No. 3 timing belt cover-to-engine bolts Water pump nuts/bolts Water pump and gasket from the engine
   
   
   Fig. Exploded view of the components to gain access to the water pump-3.0L engine
   
   
   
   Fig. Exploded view of the water pump and related components-3.0L engine
   

To install:

1. Check that the water pump turns smoothly. Also check the air hole for coolant leakage.
2. Apply liquid sealer to the gasket, water pump and engine block.
3. Install or connect the following:
   NOTE After tightening the bolt, be sure the idler pulley moves smoothly.
   NOTE Be sure to align the knock pin hole on the camshaft pulley with the knock pin on the camshaft.
   NOTE Be sure to align the knock pin hole on the camshaft pulley with the knock pin on the camshaft.
   Water pump, using a new gasket. Tighten the nuts/bolts to 53 inch lbs. (6 Nm). Rear timing belt cover. Tighten the 6 bolts to 74 inch lbs. (9 Nm). Engine wire with the 3 clamps to the rear timing belt cover No. 2 idler pulley. Tighten the bolt to 32 ft. lbs. (43 Nm).
   Right-hand camshaft pulley, with the flange side outward.
   Tighten the camshaft bolt to 65 ft. lbs. (88 Nm), using the removal tools Left-hand camshaft pulley, with the flange side inward.
   Tighten the camshaft bolt to 94 ft. lbs. (125 Nm), using the removal tools Timing belt
   
4. Fill the engine coolant.
5. Install or connect the following:
   Heater air duct Left and right ventilator louvers Window washer hoses to the ventilator louvers Top cowl seal and panel Wiper and blade assembly Negative battery cable
6. Start the engine.
7. Top off the engine coolant and check for leaks.

Hope this help.

1. Disconnect battery ground cable.
2. Remove water pump pulley attaching bolts, then the serpentine belt and water pump pulley.
3. Disconnect sensor wiring connector and remove sensor retaining bolt.
4. Twist and pull sensor to remove.

Reverse procedure to install and prior to installing new sensor, lubricate sensor O-ring.

It is located under the water pump. Make sure when you remove the sensor that you rotate the crank shaft and look in the hole to make sure the pick up magnet is still in there. Sometimes they come loose and cause a no start or long crank. You will need to have the code cleared still.