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 MANUALSPONTIAC1991FIREBIRD V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTFUEL DELIVERY AND AIR INDUCTIONTECHNICAL SERVICE BULLETINS
1991 Pontiac Firebird V8-350 5.7L
Fuel Delivery and Air Induction: Technical Service Bulletins
1991 Pontiac Firebird V8-350 5.7LSECTION Technical Service Bulletins
- Recalls
- Customer Interest
- By Symptom
- 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 - TOP TIER Detergent Gasoline
- Fuel System - GM Fuel System Treatment PLUS(R) Info.
- Fuel System - Fuel Injector Maintenance Cleaning
- Fuel System - TOP TIER Detergent Gasoline (Canada)
- Engine/Fuel System - Oil/Fuel Additive Information
- Fuel System - E85 Fuel Usage Precaution
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Tools - Revised Injector Tester
- Fuel - How Fuel Economy Is Determined
- Vehicle - Effect of Fuel Volatility On Driveability
- Fuel - Pump Noise/Whine, Cold Start Stall, Driveability
- Multec Fuel Injectors - Cleaning Information
- Tools - Introduction Of The Fuel Injector Tester
- Fuel - Light Hammering or Rattle Noise
- Recall 94V077000: Fuel Tank Filler Neck Joint Defect
- Recall - Fuel Tank Inspection/Replacement
- Fuel Filler Cap - Interior Fuel Odors
- Fuel - Reformulated/Oxygenated Gasolines
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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.