Chevrolet 1977 light duty truck Service Manual page 205

LOCK S Y S TE M - H IG H E F F O R T (C O N T 'D .)
Cause
H. D istorted coupling slot in rack (tilt).
I. Bent or restricted actuator rod.
J. Ignition switch mounting bracket bent.
H IG H E F F O R T LOCK C Y L IN D E R
" O F F " A N D " O F F -L O C K " P O SITIO N S
Cause
A. Burr on tang of shift gate.
B. Distorted rack.
S TIC K S IN " S T A R T " P O S ITIO N
Cause
A. Actuator rod deformed.
B. Any high effort condition.
K E Y C A N N O T BE R E M O V E D
IN " O F F -L O C K " P O S IT IO N
Cause
A. Ignition switch is not set correctly.
B. Defective lock cylinder.
LOCK C Y L IN D E R CAN BE R E M O V E D
W IT H O U T D EP R ES S IN G R E T A IN E R
Cause
A. Lock cylinder with defective retainer.
B. Lock cylinder without retainer.
C. Burr over retainer slot in housing cover.
LOCK B O LT H IT S S H A F T LOCK
IN " O F F " A N D " P A R K " P O S ITIO N S
Cause
A. Ignition switch is not set correctly.
IG N IT IO N S Y S TE M - E L E C T R IC A L S Y S TE M
W IL L N O T F U N C T IO N
Cause
A. Defective fuse in "accessory" circuit.
B. Connector body loose or defective.
C. Defective wiring.
Solution
H. Replace rack.
I. Straighten remove restriction or replace.
J. Straighten or replace.
- B ETW EEN
Solution
A. Remove burr.
B. Replace rack.
Solution
A. Straighten or replace.
B. Check items under high effort section.
Solution
A. Readjust ignition switch.
B. Replace lock cylinder.
Solution
A. Replace lock cylinder.
B. Replace lock cylinder.
C. Remove burr.
Solution
A. Readjust ignition switch.
Solution
A. Replace fuse.
B. Tighten or replace.
C. Repair or replace.