K 1500 Truck 4WD V8-350 5.7L (1986)
Figure No. 1 - Solenoid Connection Location
SERVICE PROCEDURE Refer to Figure No. 1
1.
Remove the air cleaner assembly.
2.
Locate the carburetor solenoid.
3.
Inspection:
^
If there is a single wire pigtail which is pink with a black stripe connected to the anti-dieseling solenoid no further action is required. Proceed
to step 4.
^
If there is nothing connected to the antidieseling solenoid locate the pink with a black stripe pigtail which is part of the engine harness and
connect it to the antidieseling solenoid. Proceed to step 4.
^
If there is a dark green electrical pigtail connected to the anti-dieseling solenoid unplug it and tape it back out of the way. Locate the pink
with a black stripe pigtail which is part of the engine harness and connect it to the solenoid.
4.
Reinstall air cleaner assembly.
WARRANTY INFORMATION Dealers should submit a warranty claim on each vehicle completed under this campaign.
Labor
*Time
Operation
Allow-
Trouble
Number
Description
ance
Code
V4030
Connect Pigtail
0.2 hr.
96
to Solenoid
*
Add 0.1 hr. for administration time allowance
CAMPAIGN IDENTIFICATION LABEL Each vehicle modified in accordance with the instructions outlined in this product campaign bulletin will
require a "Campaign Identification Label". Each label provides a space to include the five (5) digit dealer code of the dealer performing the campaign
service. This information may be inserted with a typewriter or ball point pen. Each "Campaign Identification Label" is to be located on the radiator core
support in an area which will be visible when the vehicle is brought in for periodic servicing by the owner. Apply "Campaign Identification Label" only
on a clean dry surface.
ADMINISTRATIVE PROCEDURE Procedures covering this campaign are outlined in Section V of your dealership's "GMC Truck Claims Processing
Manual" #SD8519.
GMC Truck Division Truck & Bus Group General Motors Corporation 31 Judson Street Pontiac, Michigan 48058
Dear GMC Truck Owner:
General Motors has determined that the engine electrical harness pigtail was not connected to the antidieseling solenoid on the carburetor of your 1985
or 1986 light duty GMC truck equipped with a 5.7 liter gas engine and manual transmission and heavy duty Federal emissions. Not connecting the
engine harness to this solenoid results in a curb idle speed of 600 RPM. This low idle may result in a rough running engine at idle and possible stumble
on acceleration from idle. This deviates from the 800 RPM curb idle specified for this engine.
It is necessary to connect the engine electrical harness to the anti-dieseling solenoid to correct this condition. Your GMC Truck dealer will perform this
