V 1500 P/U 4WD V8-350 5.7L (1987)
Fluid - A/T: All Technical Service Bulletins
A/T - Manual Update For ATF Level & Condition
GMC NUMBER:
89-7A-104
GROUP:
7A Automatic Transmission
DATE:
September, 1989
CORPORATE
NUMBER:
977126R
SUBJECT:
AUTOMATIC TRANSMISSION FLUID COLOR/LEVEL CHECK INFORMATION
MODELS:
ALL 1987-89 S/T, C/K, R/V TRUCKS AND M, G, P VANS EQUIPPED WITH HYDRAMATIC AUTOMATIC TRANSMISSIONS
BULLETIN COVERS:
Service Manual update for Transmission fluid level and condition information. This information is updated for 1989 service manuals printed prior to
June 1989.
TRANSMISSION FLUID LEVEL INFORMATION:
Checking fluid level and condition (color and odor) at regular intervals will provide early diagnosis information about the transmission. This information
may then be used to correct a condition that, if not detected early, could result in major transmission repairs. When adding or changing fluid, use only
DEXRON II. Refer to Maintenance and Lubrication (Service Manual Section OB) for maintenance information and servicing intervals.
NOTICE:
Do not overfill. Overfilling will cause foaming, loss of fluid, shift complaints and possible damage to the transmission.
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Fluid level should only be checked when it reaches a normal operating temperature of 82-93C (180-200F). This temperature is reached after
approximately 24 km (15 miles) of driving.
TRANSMISSION FLUID COLOR:
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Fluid color will be red when new.
IMPORTANT:
When new, automatic transmission fluid is red in color. The red dye is added so the assembly plant can identify it as transmission
fluid and distinguish it from engine oil or anti-freeze. The red dye is not an indicator of fluid quality and is not
permanent. As the vehicle is driven, the transmission fluid will begin to look darker in color. The color may eventually appear light brown. A dark brown
color along with a burnt odor may indicate excessive fluid deterioration and signal a need for fluid change.