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 MANUALSPONTIAC1987GRAND AM L4-151 2.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINS
1987 Pontiac Grand AM L4-151 2.5L
Powertrain Management: Technical Service Bulletins
1987 Pontiac Grand AM L4-151 2.5LSECTION Technical Service Bulletins
- Recalls
- Customer Interest
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Engine - Missing/Rough idle/Noise
- Engine - Stalls on Reverse/Drive Engagement
- Engine - Hard Starting/Rough Running
- Engine - Poor Cold Performance and Code 44
- Engine - Miss/Backfire/Hard Start/Hesitation or Stall
- Ignition System - Intermittent No Start
- Engine - Hard Start/Detonation When Hot
- PROM - Multiple Driveability Concerns
- Engine - Stalling When Placed In Gear/Code 35
- Air Cleaner Cover - Induction Noise
- PCV Valve Rubber Elbow - Loose/Disconnected
- Engine - Miss, Hesitation, or Roughness
- Engine - Miss, Hesitation, or Roughness
- A/T - Intermittent TCC, MIL ON, and DTC 62/26 Set
- Engine - Stalls While Engaging A/T In Reverse or Drive
- Vehicle - Effect of Fuel Volatility On Driveability
- 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
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Engine - Missing/Rough idle/Noise
- Engine - Stalls on Reverse/Drive Engagement
- Engine - Hard Starting/Rough Running
- Engine - Poor Cold Performance and Code 44
- Engine - Miss/Backfire/Hard Start/Hesitation or Stall
- Ignition System - Intermittent No Start
- Engine - Hard Start/Detonation When Hot
- PROM - Multiple Driveability Concerns
- Engine - Stalling When Placed In Gear/Code 35
- Air Cleaner Cover - Induction Noise
- PCV Valve Rubber Elbow - Loose/Disconnected
- Engine - Miss, Hesitation, or Roughness
- Engine - Miss, Hesitation, or Roughness
- A/T - Intermittent TCC, MIL ON, and DTC 62/26 Set
- Engine - Stalls While Engaging A/T In Reverse or Drive
- Vehicle - Effect of Fuel Volatility On Driveability
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Driveability
- Engine - Missing/Rough idle/Noise
- Engine - Stalls on Reverse/Drive Engagement
- Engine - Hard Starting/Rough Running
- Engine - Poor Cold Performance and Code 44
- Engine - Miss/Backfire/Hard Start/Hesitation or Stall
- Engine - Hard Start/Detonation When Hot
- PROM - Multiple Driveability Concerns
- Engine - Stalling When Placed In Gear/Code 35
- Engine - Miss, Hesitation, or Roughness
- Engine - Miss, Hesitation, or Roughness
- Engine - Roughness (Pierced Secondary Ignition)
- Vehicle - Effect of Fuel Volatility On Driveability
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Fuel System - TOP TIER Detergent Gasoline
- Erratic Operation
- Erratic Shifting
- High emissions
- Leaks
- Loose
- Noise
- Poor performance
- Recalls
- Starting problems
- 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
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- I/M 240 Repairs - Obtaining Technical Assistance
- Fuel - Normal Pump Run-On
- Fuel - Pump Replacement Caution, Strainer
- Engine - Missing/Rough idle/Noise
- Engine - Stalls on Reverse/Drive Engagement
- Tools - Revised Injector Tester
- Tools - Introduction Of The Fuel Injector Tester
- Port Injection System - Gasoline Recommendation
- Engine - Hard Starting/Rough Running
- Engine - Poor Cold Performance and Code 44
- ECM - Revised Replacement Procedure
- Engine Controls - ECM May Contain Wrong PROM
- ECM - Packard 32 Way Connector Identification
- ECM/PCM - Damaged and/or Mis-Diagnosed
- ECM - Terminal Voltage Update
- O2 Sensor - Bosch Design
- Oxygen Sensors - Silica Contamination
- Engine - Miss/Backfire/Hard Start/Hesitation or Stall
- Ignition System - Intermittent No Start
- Engine - Hard Start/Detonation When Hot
- PROM - Multiple Driveability Concerns
- ECM/PCM - Circuit Board Damage Prevention
- Fuel - Feed/Return Pipe Repair Precautions
- Recall - Fuel Feed/Return Hose Replacement
- Recall 88V032000: Fuel Line Defect
- Recall 87V184000: Fuel Feed/Return Hose/Pipe Defect
- Fuel Meter Body - Attaching Screw Torque
- Engine - Stalling When Placed In Gear/Code 35
- Fuel - Revised TBI Unit Torque Specifications
- Air Cleaner Cover - Induction Noise
- PCV Valve Rubber Elbow - Loose/Disconnected
- Engine - Miss, Hesitation, or Roughness
- Engine - Miss, Hesitation, or Roughness
- Ignition - Precautions On Use of Spark Tester
- Direct Ignition System - Inductive Pickup RPM Reading
- Engine - Roughness (Pierced Secondary Ignition)
- Delco Remy Direct Ignition System - Replacement Parts
- Engine Controls - Updated Chart A3, No Start
- Engine Controls - Code 42 (Spark Timing) Chart Revised
- Emission Systems - State Testing Information
- 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
- EVAP System - Service of Connectors
- Electronics - Electrostatic Discharge Damage
- Engine Controls - Updated Rough/Unstable Idle Chart
- Engine Controls - Static Electrical Damage Precaution
- Engine Controls - MAP Chart, DTC's 33, 34 ,63 ,64
- Engine Controls - Damage to Electrical Terminals
- Oxygen Sensor Test - Revised Tech 1 Mass Storage CD
- A/T - Intermittent TCC, MIL ON, and DTC 62/26 Set
- Engine - Stalls While Engaging A/T In Reverse or Drive
- PROM/MEMCAL - Identification Marks
- Vehicle - Effect of Fuel Volatility On Driveability
- Fuel - How Fuel Economy Is Determined
- Fuel - Reformulated/Oxygenated Gasolines
- Fuel - Use of MTBE At 15% or Less In Gasolines
- 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
RENDER: 1.0x
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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.