S15/T15 2WD Jimmy V6-262 4.3L (1991)
Fuel Gauge Sender: All Technical Service Bulletins
Instruments - Fuel Tank is Empty, Gauge Reads 1/8
GMC NUMBER:
92-6C-42(A)
GROUP:
6C Engine Fuel
DATE:
April 1992
CORPORATE
NUMBER:
166305R
SUBJECT:
FUEL GAUGE READS APPROXIMATELY 1/8 TANK WHEN EMPTY (BEND FUEL SENDER FLOAT ARM)
MODELS:
1990-1992 S/T UTILITY TRUCKS
PUBLISHED IN JANUARY 1992. IT WAS REVISED TO CORRECT THE LABOR THIS BULLETIN CANCELS ANO REPLACES GMC TRUCK
BULLETIN 92-6C-42,
OPERATION NUMBER. ALL COPIES OF 92-6C-42 SHOULD BE DISCARDED.
Some owners of 1990-92 S/T utility trucks may experience inaccurate fuel gauge readings. If this condition is encountered, the fuel gauge will read 1/8
of a tank on the gauge when the tank is empty. This is due to the fuel sender float contacting the bottom of the fuel tank. The condition can be corrected
by bending the fuel sender's float arm. The float arm must be bent so that the float arm angle is approximately 87 degrees.
When correctly bent, the float arm angle will match the template included in this bulletin.
SERVICE PROCEDURE:
Important
Before servicing the fuel sender, proper diagnosis of the fuel gauge must be performed according to "DIAGNOSIS OF THE FUEL GAGE" Section
8C-7 in the 1992 Sonoma and Jimmy Service Manual, number X-9229.
1.
Remove the fuel tank as outline "Fuel Tank Replacement," page 4-66 in the 1992 Light Duty Truck Fuel and Emissions Service Manual, X-9236.
2.
Remove the fuel sender assembly as outlined in "Fuel Pump Removal," page 4-61 in the 1992 Light Duty Truck Fuel and Emissions Service
Manual, X-9236.
