Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1983BLAZER FULL SIZE V8-379 6.2L DSLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSA/T FLUID LEVEL INDICATOR - AVAILABLE
1983 Chevrolet Blazer Full Size V8-379 6.2L DSL
A/T Fluid Level Indicator - Available
1983 Chevrolet Blazer Full Size V8-379 6.2L DSLSECTION A/T Fluid Level Indicator - Available
91chevy08
Number: 90-406-7A
Section: 7A
Date: March 1991
Corporate Bulletin No.: 067107
Subject: AVAILABILITY/SERVICING OF NEW TRANSMISSION FLUID LEVEL INDICATOR
Model and Year: 1982-90 C/K TRUCKS, 1987-90 R/V TRUCKS, 1983-90 G VANS WITH 3L80 OR 4L60 AUTOMATIC TRANSMISSION
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 All & Transmission fluid
3L80 or 4L60 level indicator
15659455 1987-90 RN All & Transmission fluid
3L80 or 4L60 level indicator
15677051 1987-90 G All w/(4.3Z, 5.0H, 5.7K) Transmission fluid
& 4L60 level indicator
15677052 1987-90 G2 (6.2C) & 4L60 Transmission fluid
1983-86 G All & 4L60 level indicator
15677055 1987-90 G3 (6.2J) & 3L80 Transmission fluid
1987-88 G3 (5.7M) & 3L80 level indicator
1984-86 G All & 3L80 1983 G3 & 3L80
15677056 1987-90 G All w/(4.3Z, 5.0H, 5.7K) Transmission fluid
& 3L80 level indicator
15677057 1988-90 G3 (7.4N) & 3L80 Transmission fluid
level indicator
Parts are currently available from GMSPO.
WARRANTY INFORMATION
For vehicles repaired under warranty use:
Labor Operation: K6130
Use applicable Labor Time Guide for labor hours.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.