GMC 1982 Light Duty Truck Service Manual page 292

3B4-4 STEERING COLUMNS
In s tru m e n t Panel B ra c k e t C apsule Damage
N O T E : The bolt head must not contact surface " A " . It
contact is made, the capsule shear load will be increased. If
this condition exists replace the bracket.
L O C K S Y S T E M - W I L L
C a u s e
A. Lock bolt damaged.
B. Defective lock cylinder.
C. Damaged housing.
D. Damaged or collapsed sector.
E. Damaged rack.
F. Shear Flange on sector shaft collapsed.
L O C K S Y S T E M
C a u s e
A. Lock bolt spring broken or defective.
B. Damaged sector to o th , or sector installed incorrectly.
C. Defective lock cylinder.
D. Burr or lock bolt or housing.
E. Damaged housing.
F. Transmission linkage adjustm ent incorrect.
G. Damaged rack.
H. I n t e r f e r e n c e b e t w e e n b o w l a n d c o u p li n g ( t ilt).
I. Ignition switch stuck.
J. Actuator rod restricted or bent.
L O C K S Y S T E M -
C a u s e
A. Lock cylinder defective.
B. Ignition switch defective.
C. Rack preload spring broken or deformed.
D. Burrs on sector, rack, housing, support, tang o f shift gate
or actuator rod coupling.
E. Bent sector shaft.
F. Distorted rack.
G. M isa lig n m e n t o f h o u s i n g to c o v e r ( t il t o n ly ).
AUTOMATIC TRANSMISSION COLUMNS
N O T U N L O C K
W I L L N O T L O C K
H I G H E F F O R T
Fig. 3 B 4 -3 -A u to m a tic T ransm ission Column Diagnosis Chart A
L
S o l u t i o n
A. Replace lock bolt.
B. Replace or repair lock cylinder.
C. Replace housing.
D. Replace sector.
E. Replace rack.
F. Replace.
S o l u t i o n
A. Replace spring.
B. Replace, or install correctly.
C. Replace lock cylinder
D. Remove Burr.
E. Replace housing.
F. Readjust (see Sec. 7).
G. Replace rack.
H. Adjust or replace as necessary.
I. Readjust or replace.
J. Readjust or replace.
S o l u t i o n
A. Replace lock cylinder.
B. Replace switch.
C. Replace spring.
D. Remove Burr.
E. Replace shaft.
F. Replace rack
G. Replace either or both.
SURFACE " A'