GMC 1976 ZEO 6083 Maintenance Manual page 579

STEERING COLUMN TROUBLE DIAGNOSIS (Cont'd .)
STEERING 9- 47
Condition Possible Cause Correction
Turn signal will not A . Broken lane change A. Replace switch .
indicate lane change . pressure pad or spring
hanger .
B. Broken, missing or mis- B. Replace or reposition as
placed lane change spring . required .
C. Jammed base or wires. C. Loosen mounting screws, reposi-
tion base or wires and retighten
screws (25 in .-lbs.) .
Turn signal will not A. Foreign material or A. Remove material and/or parts.
stay in turn position . loose parts impeding
movement of yoke .
B. Broken or missing de-
B. Replace spring .
tent or cancelling springs .
C. None of the above.
C. Replace switch .
Hazard switch cannot be A. Foreign material be-
A. Remove foreign material .
turned off . tween hazard support can- No foreign material impeding
celling leg and yoke . function of hazard switch-replace
turn signal switch .
Hazard switch will not A . Loose switch mounting A. Tighten mounting screws
stay on or difficult to screws . (25 in .-lbs.) .
turn off.
B. Interference with B. Remove interference .
other components .
C. Foreign material .
C. Remove foreign material .
D. None of the above. D. Replace switch .
No turn signal lights . A. Defective or blown
A. Replace fuse .
fuse .
B. Inoperative turn signal
B. Replace turn signal flasher.
flasher.
C. Loose chassis to C. Connect securely .
column connector .
D. *Disconnect column to D . Replace signal switch .
chassis connector. Connect
new switch to chassis and _
` operate switch by hand .
If vehicle lights now
operate normally, signal
switch is inoperative.
E. If vehicle lights do E. Repair chassis wiring as required
not operate check chassis using manual as guide.
wiring for opens, grounds,
etc.
Turn indicator lights A. Inoperative turn
A . Replace turn flasher.
n, but not flashing . flasher.
Note : There are two flashers in the
system . Consult manual for location .