The knock sensor system enables the engine control module (ECM) to control the ignition timing for the best possible performance while protecting the engine from potentially damaging levels of detonation. The ECM uses the knock sensor system to test for abnormal engine noise that may indicate detonation, also known as spark knock.
This knock sensor system uses one or two flat response dual-wire sensors. The sensor uses piezo-electric crystal technology that produces an alternating current (AC) voltage signal of varying amplitude and frequency based on the engine vibration or noise level. The amplitude and frequency are dependant upon the level of knock that the knock sensor detects. The ECM receives the knock sensor signal through 2 isolated signal circuits.
If the ECM has determined that knock is present, it will retard the ignition timing to attempt to reduce the knock. The ECM is capable of controlling spark retard on an individual cylinder basis. The ECM will always try to work back to a zero compensation level, or no spark retard. knock sensor diagnostics are calibrated to detect faults with the knock sensor circuitry inside the ECM, the knock sensor wiring, or the knock sensor voltage output. Some diagnostics are also calibrated to detect constant noise from an outside influence such as a loose/damaged component or excessive mechanical engine noise.
Front Differential Carrier Installation (6T30)
Front Differential Carrier Installation
Callout
Component Name
1
Final Drive Sun Gear
2
Differential Carrier Assembly
...
Transmission Fluid Pump Assemble (6T30)
Table 1:
Fluid Pump w/Valve Trains Assemble
Table 2:
Torque Converter Fluid Seal and Fluid Filter Assembly
Assemble
Fluid Pump w/Valve Trains Assemble
Fluid Pump w/Valve Trains Assemble
Callout
Comp ...
Transmission Mount Bracket Replacement - Rear
Removal Procedure
Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
Remove the front suspension skid plate, if equipped.
Refer to Drivetrain and Front Suspension Frame Skid
Plate Replacement.
Using a suitable jack stand, support the rear of the ...