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 MANUALSCHEVROLET1993LUMINA APV V6-3800 3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINS
1993 Chevrolet Lumina APV V6-3800 3.8L
Powertrain Management: Technical Service Bulletins
1993 Chevrolet Lumina APV V6-3800 3.8LSECTION Technical Service Bulletins
- Customer Interest
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Fuel System - Factors That Affect Economy/Mileage
- A/T - Loss of Drive or Erratic Shifts
- Engine - Decel Stall or Long Crank On Start-Up
- Engine - Coolant Leak Near the Throttle Body
- TCC - No Apply or Slipping When Commanded On
- Fuel - Injector Wires Trapped Under Air Cleaner
- Fuel Tank - Thud/Clunk Noise Between 3/4 and Full
- Engine - Miss, Hesitation, or Roughness
- Fuels - Effect of Volatility on Driveability
- Engine - Hard Start or No Start
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Fuel System - Factors That Affect Economy/Mileage
- A/T - Loss of Drive or Erratic Shifts
- Engine - Decel Stall or Long Crank On Start-Up
- Engine - Coolant Leak Near the Throttle Body
- TCC - No Apply or Slipping When Commanded On
- Fuel - Injector Wires Trapped Under Air Cleaner
- Fuel Tank - Thud/Clunk Noise Between 3/4 and Full
- Engine - Miss, Hesitation, or Roughness
- Fuels - Effect of Volatility on Driveability
- Engine - Hard Start or No Start
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Driveability
- Erratic Operation
- Erratic Shifting
- High emissions
- Inoperative
- Leaks
- Noise
- Poor performance
- Slipping
- Starting problems
- Sticking/Binding
- Vibration
- All Technical Service Bulletins
- Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
- Vehicle - Engine And Sub-Systems Flushing Recommendations
- Engine - THIS BULLETIN HAS BEEN CANCELED
- Fuel System - Fuel Injector Maintenance Cleaning
- Fuel System - GM Fuel System Treatment PLUS(R) Info.
- Electrical - MIL ON/DTC's Set By Various Control Modules
- A/T Control - DTC P0756 Diagnostic Tips
- Fuel System - Factors That Affect Economy/Mileage
- I/M 240 Repairs - Obtaining Technical Assistance
- A/T - Loss of Drive or Erratic Shifts
- PROM - Chuggle Above 36mph w/Torque Converter Engaged
- Engine - Decel Stall or Long Crank On Start-Up
- Spark Plugs - Revised
- Engine - Coolant Leak Near the Throttle Body
- TCC - No Apply or Slipping When Commanded On
- Tools - Introduction Of The Fuel Injector Tester
- Fuel - Injector Wires Trapped Under Air Cleaner
- Tools - Duel Fuel Injector Tester
- PCM's - Servicing Units With Mylar Strips
- ECM Connector - Lubricant Does Not Cause Malfunction
- PCM & BCM (W/Mylar Strips) - Servicing
- ECM - Connector OEM Lubricant Doesn't Cause Malfunction
- Oxygen Sensors - Silica Contamination
- Engine Controls - Manual Update Revised Chart C-4
- SPS/FLASH EPROM - Programming
- PROM - Powertrain Control Module Reprogramming
- Fuel Tank - Thud/Clunk Noise Between 3/4 and Full
- Throttle/Cruise Cable - Revised Retainers
- Engine - Miss, Hesitation, or Roughness
- Warranty - Emission Parts Coverage
- Enhanced IM240 Program - Implementation Plan
- Emission - Enhanced Inspection Maintenance Programs
- I/M 240 Program - Equipment Purchase
- I/M Emissions Diagnostic Manual -Program
- Enhanced Emission I/M - Program Update
- Enhanced Emission Inspection Maintenance - Equipment
- Warranty - Guidelines for I/M 240 Labor
- Emissions Inspection/Maintenance - Labor Operations
- EVAP System - Service of Connectors
- Service Manual - DTC`s 42/P1350/P1361 Revisions
- Oxygen Sensor Test - Revised Tech 1 Mass Storage CD
- PCM - Returned Product Feedback Program
- A/T - Revised Diagnosis
- PROM/MEMCAL - Identification Marks
- Fuels - Effect of Volatility on Driveability
- Fuel - How Fuel Economy Is Determined
- Engine - Hard Start Or No Start
- Engine - Hard Start or No Start
- Fuel - Reformulated/Oxygenated Gasolines
- Fuel - Top Tier Detergent Gasoline Information
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Fuel System - E85 Fuel Usage Precaution
- Engine/Fuel System - Oil/Fuel Additive Information
- Fuel System - TOP TIER Detergent Gasoline (Canada)
- Fuel System - TOP TIER Detergent Gasoline
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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.