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 MANUALSPONTIAC1989GRAND PRIX V6-191 3.1LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTTECHNICAL SERVICE BULLETINS
1989 Pontiac Grand Prix V6-191 3.1L
Engine, Cooling and Exhaust: Technical Service Bulletins
1989 Pontiac Grand Prix V6-191 3.1LSECTION Technical Service Bulletins
- Recalls
- Customer Interest
- A/C - Inadequate Heat Condition
- Heater - Inadequate Performance
- PROM - Cold Start or Decel Stall or Tip-in Hesitation
- Engine - Miss, Hesitation, or Roughness
- Engine - Miss, Hesitation, or Roughness
- Instruments - Oil Pressure Light May Flicker At Idle
- Engine - Diagnosing Intermittent Idle Speed Increases
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Engine - Oil Leaks from Crankshaft Rear Main Seal
- Engine - Oil Leaks From Front Crankshaft Seal
- By Symptom
- Customer Interest
- A/C - Inadequate Heat Condition
- Heater - Inadequate Performance
- PROM - Cold Start or Decel Stall or Tip-in Hesitation
- Engine - Miss, Hesitation, or Roughness
- Engine - Miss, Hesitation, or Roughness
- Instruments - Oil Pressure Light May Flicker At Idle
- Engine - Diagnosing Intermittent Idle Speed Increases
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Engine - Oil Leaks from Crankshaft Rear Main Seal
- Engine - Oil Leaks From Front Crankshaft Seal
- Driveability
- Erratic Operation
- Erratic Shifting
- False instrument warning light/gauges
- Leaks
- Poor performance
- Recalls
- Starting problems
- Customer Interest
- All Technical Service Bulletins
- Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
- Vehicle - Engine And Sub-Systems Flushing Recommendations
- A/C - Inadequate Heat Condition
- Heater - Inadequate Performance
- Engine - Oil Economy Information
- Engine - Update, Removing Hood for Clearance
- Engines - ACDelco Remanufactured
- Engine - Surface Conditioning Discs Precautions
- Engine - AC Delco Remanufactured Engines
- Pocket Guide - Technicians Driveability Diagnostics
- Cooling System - Leak Diagnostic Procedure
- Spark Plug - Torque Specification Update
- Engine - Intake and Exhaust Pushrod Identification
- Engine - Head Bolt Torque Clarified/Updated
- Cooling - Updated Fan Wiring, Locations & Diagnostics
- Cooling - Radiator Repair/Replacement Guidelines
- Recall 89V108000: Possible Electrical Short/Fire
- PROM - Cold Start or Decel Stall or Tip-in Hesitation
- Warranty - Air Cleaner Assembly Returns
- Engine - Installation of 75 mm Oil Filter
- Engine - Miss, Hesitation, or Roughness
- Engine - Miss, Hesitation, or Roughness
- Recall - Turbocharger Oil Feed Pipe Misrouted
- Instruments - Oil Pressure Light May Flicker At Idle
- Rear Underbody - Noise Summary
- Vehicle - Fluid Level General Guidlines
- Coolant - Information on Propylene Glycol Usage
- Warranty - Recycled Engine Coolant Policy
- Cooling System - Reconstituted Anti-Freeze
- Warranty - Engine Coolant Substitute Caution
- Recall 97V058000: Rear Cradle Retainer Replacement
- Engine - Diagnosing Intermittent Idle Speed Increases
- Cooling System - Coolant Recycling Information
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Engine - Sealant Usage/Procedures
- Engine - Oil Leaks from Crankshaft Rear Main Seal
- Engine - Oil Leaks From Front Crankshaft Seal
- Engine/Fuel System - Oil/Fuel Additive Information
- Cooling System, A/C - Aluminum Heater Cores/Radiators
- Engine - Noise/Damage Oil Filter Application Importance
- Engine - Drive Belt Misalignment Diagnostics
- Engine - Use of 'Surface Conditioning Disks'
- Engine - Intake Manifold Inspection/Replacement
- Engine - GM Dexos 1(R) And 2(R) Oil Specifications
- Engine - GM dexos 1(R) and dexos 2(R) Oil Specifications/Info.
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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.