Throttle Body Cable Removal, Installation/Adjustment Procedure
Throttle Body Cable Removal, Installation and Adjustment ProcedureAccelerator Cable Removal Procedure
1. Remove retaining clip (3) from throttle cable and pull cable towards grommet (2) loosing the cable (4).
2. Depress the throttle body accelerator cam by rotating it to its full open position then remove the accelerator cable (1) and allow the accelerator cam to go back to its full close position.
Accelerator Cable Installation and Adjustment Procedure
Important:
Make sure that the throttle control cable does not hold the throttle open. With the engine OFF, check to see that the accelerator pedal is free.
On a properly adjusted throttle cable the metal cable (1) should be no higher than the top on the cam groove. If the cable is too high or loose remove clip (3) pull back on cable casing (4) away from throttle body until cable (1) at cam is no higher than the top of the groove.
1. Remove retaining clip (3) from throttle body cable and pull cable casing (4) away from throttle body to remove any excess play in the accelerator cable.
2. Re-install retaining clip (3) on the throttle body cable (4) and ensure the washer is between the clip and grommet (2).
3. Slowly depress the accelerator pedal to the floor two or three times.
4. Verify the cable adjustment. Repeat Step 1 as required to ensure the throttle body cam or cable are not binding or contacting any other component.
Bulletin Inspection/Checklist for PCV Valve Kit
The purpose of this inspection checklist is to ensure that the critical steps outlined in the bulletin PCV Valve Kit have been performed correctly. The revised Throttle Body PCV Valve and Crankcase Ventilation system is designed to ensure that the accumulation of moisture in the crankcase is kept to a minimum and any moisture that accumulates is allowed to pass through the PCV system without freezing. Doing so will prevent ice buildup and the potential for throttle freezing in extreme cold temperatures. It is CRITICAL that the following steps have been performed and installed exactly as described in the bulletin service procedure. Failure to do so could cause the repair procedure to be ineffective. Please verify that the following service procedures have been completed correctly:
Inspection
1. MAP Sensor Lower Intake Manifold port was enlarged from 4 mm to 6 mm with the GM Special Tool EN-48981 reamer and brass sleeve. Refer to Service Procedure Steps 19-22 in this service bulletin.
2. Installation of the copper washer (gasket) provided in the kit under the right upper bolt. Refer to Service Procedure Step 32 in this service bulletin.
3. The attaching hoses must have the white paint mark at the PCV valve assembly. Refer to Service Procedure Step 36 in this service bulletin.
4. Installation of the protective webbing sleeve over the coolant inlet hose close to the foam insulator. Refer to Service Procedure Step 37 in this service bulletin.
5. Ensure that the accelerator bracket retaining plate is positioned with the rounded corner oriented upwards and the depression is oriented toward the mounting bolt head. The bracket retaining plate should not protrude beyond the intake manifold mounting tab. This is critical for proper throttle cable alignment and operation. Refer to Service Procedure Step 45 in this service bulletin.
6. Ensure that the insulator sleeve over the external crankcase ventilation pipe assembly to the engine block/crankcase is installed correctly. Refer to Service Procedure Step 54 in this service bulletin.