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 MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSA/T - DEXRON III FLUID INTRODUCTION
1990 Chevrolet Lumina APV V6-191 3.1L
A/T - DEXRON III Fluid Introduction
1990 Chevrolet Lumina APV V6-191 3.1LSECTION A/T - DEXRON III Fluid Introduction
File In Section: 0 - General Information
Bulletin No.: 57-02-01
Date: March, 1995
SERVICE MANUAL UPDATE
Subject:
Section 0 - General Information - DEXRON(R)-III Transmission Fluid Introduction
Models:
1995 and Prior Passenger Cars and Trucks
General Motors has phased in a new automatic transmission fluid, DEXRON(R)-III, that does not need replacing under normal service. DEXRON(R)-III is designed to help the transmission deliver the best possible performance under all conditions. Refer to Figure 1.
The improvements in DEXRON(R)-III include better friction stability, more high temperature oxidation stability and better material compatibility. DEXRON(R)-III has the same low temperature fluidity as DEXRON(R)-IIE, for better transmission performance in cold weather.
DEXRON(R)-IIE and DEXRON(R)-III are fully compatible.
DEXRON(R)-III is fully compatible with any General Motors passenger vehicle or light truck with automatic transmission and built since 1949.
Dealers should require their supplier to include the DEXRON(R)-III license number on all automatic transmission fluid invoices.
Starting February 1, 1994 DEXRON(R)-III was phased into all North American assembly plants.
DEXRON(R)-III fluid is available from GMSPO (see fluid numbers below):
U.S.
1 Quart 12346143
1 Gallon 12346144
55 Gallon 12346145
In Canada
1 Liter 10952622
4 Liter 10952623
200 Liter 10952624
The 1995 Automatic Transmission/Transaxle fluid change intervals are the following:
(1994 and prior should use the schedules as written in the Owner's Manual.)
If the vehicle is mainly driven under one or more of these conditions:
In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police car or delivery service.
Change the fluid and filter every 50,000 miles (63,000 km).
If the vehicle is not used mainly under any of these conditions, the fluid and filter do not require periodic changing for vehicles under 8,600 GVWR.
Vehicles over 8,600 GVWR change the fluid and filter every 50,000 miles (83,000 km) regardless of driving conditions.
Bulletin No.: 57-02-01
Date: March, 1995
SERVICE MANUAL UPDATE
Subject:
Section 0 - General Information - DEXRON(R)-III Transmission Fluid Introduction
Models:
1995 and Prior Passenger Cars and Trucks
General Motors has phased in a new automatic transmission fluid, DEXRON(R)-III, that does not need replacing under normal service. DEXRON(R)-III is designed to help the transmission deliver the best possible performance under all conditions. Refer to Figure 1.
The improvements in DEXRON(R)-III include better friction stability, more high temperature oxidation stability and better material compatibility. DEXRON(R)-III has the same low temperature fluidity as DEXRON(R)-IIE, for better transmission performance in cold weather.
DEXRON(R)-IIE and DEXRON(R)-III are fully compatible.
DEXRON(R)-III is fully compatible with any General Motors passenger vehicle or light truck with automatic transmission and built since 1949.
Dealers should require their supplier to include the DEXRON(R)-III license number on all automatic transmission fluid invoices.
Starting February 1, 1994 DEXRON(R)-III was phased into all North American assembly plants.
DEXRON(R)-III fluid is available from GMSPO (see fluid numbers below):
U.S.
1 Quart 12346143
1 Gallon 12346144
55 Gallon 12346145
In Canada
1 Liter 10952622
4 Liter 10952623
200 Liter 10952624
The 1995 Automatic Transmission/Transaxle fluid change intervals are the following:
(1994 and prior should use the schedules as written in the Owner's Manual.)
If the vehicle is mainly driven under one or more of these conditions:
In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police car or delivery service.
Change the fluid and filter every 50,000 miles (63,000 km).
If the vehicle is not used mainly under any of these conditions, the fluid and filter do not require periodic changing for vehicles under 8,600 GVWR.
Vehicles over 8,600 GVWR change the fluid and filter every 50,000 miles (83,000 km) regardless of driving conditions.
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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.