C 10 1/2 Ton Pickup 2WD V8-379 6.2L DSL VIN C FI (1982)
Glow Plug: Testing and Inspection
TSB 83-l-92 Diesel Glow Plug System Diagnosis
Number:
83-I-92
Section:
VIy
Date:
July, 1983
Subject: 1982-83 6.2L DIESEL GLOW PLUG SYSTEM DIAGNOSIS - 1982 "C-K-P" AND "C-K-P-G" 10-30 SERIES TRUCK WITH LH6 (6.2L
DIESEL L.D. EMISSIONS) OR LL4 (6.2L L.D. DIESEL H.D. EMISSIONS)
TO:
ALL CHEVROLET DEALERS
The following should be used in conjunction with the service manual for diagnosing the glow plug system:
6.2 LITER DIESEL ELECTRICAL DIAGNOSIS
GLOW PLUG CONTROLLER CONNECTOR CIRCUIT CHECKS
Pin 1:
(Brown Wire) should have continuity (0 ohms resistance)
to the brown wire at the alternator with the engine off or alternator voltage with the engine running. If there is battery voltage at
this pin with the ignition key off, the alternator has failed a diode (see below).
Pin 2:
There is no connection to this pin on 1982 vehicles. On
1983 vehicles, there may be a white tube or a wire to this pin, it is only to seal the position in the connector. It is hooked to the
wiring harness. DO NOT GROUND THIS PIN FOR ANY REASON, IT WILL PROHIBIT NORMAL OPERATION OF THE
CONTROLLER AND CAN DAMAGE GLOW PLUGS.
