NEW TRAN.FLUID LEVEL INDICATOR INDICATOR SEALS AT FILL TUBE. GMC Truck GMC G Van 1986

SUBJECT: NEW TRANSMISSION FLUID LEVEL INDICATOR

MODELS: 1982-90 C/K, R/V TRUCKS AND 1983-90 G-VANS EQUIPPED WITH 3L80 (THM400) OR 4L60 (70OR4) AUTOMATIC TRANSMISSIONS

A new transmission fluid level indicator featuring a seal at the transmission fill tube inlet end is available. This indicator, which is installed on all 1991 C/K, R/V and G models, may be installed on previous models listed below.

SERVICE PROCEDURE:

When installing a new transmission fluid level indicator, replacement of the transmission fluid fill tube is not necessary.

SERVICE PARTS INFORMATION

Part Number Model Description ------ ---------------------- ------------- 15659455 1982-90 C/K, R/V All & Transmission 3L80 or 4L60 fluid level indicator

15677051 1987-90 G all w/ (4.3Z transmission fluid 5.OH, 5.7K) & 4L60 level indicator

15677052 1987-90 G2 (6.2C) & Transmission fluid 4L60 level indicator 1983-86 G All & 4L60

15677055 1987-90 G3 (6.2J) & 3L80 Transmission fluid 1987-88 G3 (5.7M) & level indicator 3L80 1984-86 G All & 3L80 1983 G3 & 3LBO

15677056 1987-90 G All w/(4.3Z, Transmission fluid 5.OH, 5.7K) & 3L80 level indicator

15677057 1988-90 G3 (7.4N) & Transmission fluid 3L80 level indicator

Parts are currently available from GMSPO.

WARRANTY INFORMATION

For vehicles repaired under warranty use: Labor Operation: K6130 Labor Time: 0.2 hr.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.