GMC 1982 Light Duty Truck Service Manual page 294

3B4-6 STEERING COLUMNS
I G N I T I O N S Y S T E M - E L E C T R I C A L S Y S T E M -
W I L L N O T F U N C T I O N
Cause
D. Defective ignition switch.
E. Ignition switch not adjusted properly.
S W I T C H W I L L N O T A C T U A T E M E C H A N I C A L L Y
Cause
A. Defective ignition switch.
S W I T C H C A N N O T BE S E T C O R R E C T L Y
Cause
A. Switch actuator rod deformed.
B. S e c t o r t o r a c k e n g a g e d in w r o n g t o o t h ( tilt) .
N O I S E I N C O L U M N
Cause
A. Coupling bolts loose.
B. Column not correctly aligned.
C. Coupling pulled apart.
D. Sheared inte rm ediate shaft plastic joint.
E. Horn c on tact ring not lubricated.
F.
Lhck of grease on bearings or bearing surfaces.
G.
Lower shaft bearing tight or frozen.
H. Upper shaft tight or frozen.
I.
Shaft lock plate cover loose.
J.
Lock plate snap ring not seated.
K. Defective buzzer dog cam on lock cylinder.
L. One click when iri " off-lock" position and the steering
wheel is moved.
( C O N T ' D . )
Fig. 3B 4 -5~ A utom a tic Transm ission Colum n Diagnosis Chart C
S o lu tio n
D. Replace ignition switch.
E. Readjust ignition switch.
S o lu tio n
A. Replace igntion switch.
S o lu tio n
A. Repair or replace switch actu ator rod.
B. Engage sector to rack correctly.
S o lu tio n
A. Tighten pinch bolts to specified torque.
B. Realign column.
C. Replace coupling and realign column.
D. Replace or repair steering shaft and realign column.
E. Lubricate with lubriplate.
F.
Lubricate bearings.
G.
Replace bearing. Check shaft and replace if scored.
H.
Replace housing assembly.
I.
Tighten three screws or, if missing, replace.
CAUTION: Use specified screws. (15 in. lbs.)
J. Replace snap ring. Check for proper seating in groove.
K. Replace lock cylinder.
-
L. Normal condition lock bolt is seating.