Symptom Chart

SYMPTOM

Condition	Possible Sources	Action
The shift interlock system does not release or lock correctly	Circuitry. Front electrical module (FEM). CJB Fuse 204 (5A) and 205 (5A). Shift lock actuator. Brake pedal position (BPP) switch.	Go To PINPOINT TEST C: BRAKE SHIFT INTERLOCK INOPERATIVE .
Transmission range indicator does not correspond to the gear position display on instrument cluster	Transmission shift cable bracket.	TIGHTEN the bolts holding the transmission shift cable bracket.
	Transmission shift cable loose from the transmission shift cable bracket.	INSTALL a new cable.
	Shift cable.	VERIFY the transmission shift cable adjustment. REFER to SELECTOR LEVER CABLE ADJUSTMENT . VERIFY correct digital transmission range (TR) sensor adjustment. REFER to AUTOMATIC TRANSMISSION - 5R55N .
	Digital transmission range sensor.	REFER to AUTOMATIC TRANSMISSION - 5R55N .
	Transmission shifter.	INSTALL a new shifter assembly.
Unable to cancel overdrive	Fuse. TCS. TCS not cycled during self-test. Powertrain control module (PCM). Circuitry.	Go To PINPOINT TEST A: OVERDRIVE CANCEL SWITCH NOT WORKING .
Instrument panel does not indicate park	Park sense switch. Circuitry.	Go To PINPOINT TEST B: THE PARK SWITCH NOT WORKING .
Rattle, buzz, or other noise	Selector lever knob.	INSTALL a new selector lever knob.
	Selector lever bezel.	INSTALL a new selector lever bezel.
	Shifter assembly.	TIGHTEN housing bolts.
Excessive shift effort	Transmission shift cable.	INSTALL a new transmission shift cable.
	Transmission components.	REFER to AUTOMATIC TRANSMISSION - 5R55N .
	Shifter assembly.	INSTALL a new shifter assembly.
Transmission range shifter will not move	Transmission shift cable.	INSTALL a new transmission shift cable.
	Transmission components.	REFER to AUTOMATIC TRANSMISSION - 5R55N .
	Brake shift interlock system.	Go To PINPOINT TEST C: BRAKE SHIFT INTERLOCK INOPERATIVE .
	Transmission shifter assembly.	INSTALL a new shifter assembly.