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 MANUALSCHEVROLET1985S10/T10 BLAZER 4WD L4-151 2.5LREPAIR AND DIAGNOSISMAINTENANCETECHNICAL SERVICE BULLETINS
1985 Chevrolet S10/T10 Blazer 4WD L4-151 2.5L
Maintenance: Technical Service Bulletins
1985 Chevrolet S10/T10 Blazer 4WD L4-151 2.5LSECTION Technical Service Bulletins
- Customer Interest
- Wheel Trim Ring - Squeaks
- Tires (Front) - Irregular Wear
- Tires (All Season) - Irregular or Premature Wear
- Tires, Front - Premature Wear on RWD Vehicles
- Engine - Miss, Hesitation, or Roughness
- A/C - Refrigerant Hose & Clamp Repairs
- Hubcap - Distortion
- Transfer Case - High Shift Effort When Shifting
- Locking Differential - Chattering on Turns
- P/S - Reduced Assist When Cold
- Ignition - Installation of Timing Indicator
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Tires/Wheels - Low Tire/Leaking Cast Aluminum Wheels
- Power Steering - Fluid Leaks Due to Extreme Low Temps
- Tires/Wheels - Vibration Shortly After Tires Are Mounted on Rim
- By Symptom
- Abnormal wear/deterioration
- Abnormal/Uneven wear
- Customer Interest
- Wheel Trim Ring - Squeaks
- Tires (Front) - Irregular Wear
- Tires (All Season) - Irregular or Premature Wear
- Tires, Front - Premature Wear on RWD Vehicles
- Engine - Miss, Hesitation, or Roughness
- A/C - Refrigerant Hose & Clamp Repairs
- Hubcap - Distortion
- Transfer Case - High Shift Effort When Shifting
- Locking Differential - Chattering on Turns
- P/S - Reduced Assist When Cold
- Ignition - Installation of Timing Indicator
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Tires/Wheels - Low Tire/Leaking Cast Aluminum Wheels
- Power Steering - Fluid Leaks Due to Extreme Low Temps
- Tires/Wheels - Vibration Shortly After Tires Are Mounted on Rim
- Difficult steering
- Driveability
- Erratic Operation
- Erratic Shifting
- Hard Selection
- Leaks
- Noise
- Poor steering/ride control
- Vibration
- Warping
- All Technical Service Bulletins
- Engine - GM dexos 1(R) and dexos 2(R) Oil Specifications/Info.
- Vehicle - Engine And Sub-Systems Flushing Recommendations
- Maintenance - Updated Minimum Acceptable Oil Levels
- A/C Refrigerant - Contamination
- Wheels (Steel) - Damage Due to Improper Mounting
- Wheels - Sealing Leaking Cast Aluminum
- Wheel Trim Ring - Squeaks
- Aluminum Wheels - New Coated Wheel Weights
- Wheels - Finish Damage During Off Car Balancing
- Warranty - OE Chrome Plated Aluminum Wheel ID
- Wheels - Locking Wheel Nuts Impact On Tire Balance
- Tires (Front) - Irregular Wear
- Tires (All Season) - Irregular or Premature Wear
- Tires, Front - Premature Wear on RWD Vehicles
- Tires - Speed Rated Information
- A/T - Updated Filter and Seal
- Engine - Miss, Hesitation, or Roughness
- A/C - Refrigerant Hose & Clamp Repairs
- Engine Oil - Discoloration (Oil Dye)
- Cooling System - Reconstituted Anti-Freeze Information
- Coolant - Information on Propylene Glycol Usage
- Warranty - Recycled Engine Coolant Policy
- Coolant - Used Anti-Freeze Policy
- P/S - Rack & Pinion O-Ring Seal Fitting Leaks
- Hubcap - Distortion
- Engine - Rough/Unstable/Incorrect Idle
- A/T - New Trans Fluid, Dexron IIE
- A/T - DEXRON III Fluid Introduction
- Tires/Wheels - Wheel Weight Usage Precautions
- Transfer Case - High Shift Effort When Shifting
- Locking Differential - Chattering on Turns
- Drivetrain - Recommended Axle Lubricant
- A/C - Use of Alternate Refrigerants In CFC 12
- Contaminated R12 Refrigerant - Testing & Handling
- A/C - Retrofitting R-12 Vehicles to R-134A
- P/S - Reduced Assist When Cold
- Ignition - Installation of Timing Indicator
- Alignment - The Importance of Four Wheel Alignment
- Cooling System - Coolant Recycling Information
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Electrical - Aftermarket Fuse Warning
- Wheels - Chrome Wheel Brake Dust Accumulation/Pitting
- Wheels/Tires - Upsized Wheel/Tire Characteristics
- Wheels/Tires - Chrome/Steel Valve Stem Cap Precautions
- Engine - Noise/Damage Oil Filter Application Importance
- Engine - Drive Belt Misalignment Diagnostics
- Wheels/Tires - Accessory Wheel And Tire Information
- Wheels/Tires - Replacement Wheel Weight Information
- Tires/Wheels - Low Tire/Leaking Cast Aluminum Wheels
- Tires/Wheels - Tire Puncture Repair Procedures
- Wheels - Changing Procedures/Precautions
- A/T - Water Or Coolant Contamination Information
- Steering/Suspension - Wheel Alignment Specifications
- Wheels/Tires - Refinishing Aluminum Wheels
- A/T - DEXRON(R)-VI Fluid Information
- Power Steering - Fluid Leaks Due to Extreme Low Temps
- A/T - Fluid Oil Cooler Flow Test
- Tires/Wheels - Vibration Shortly After Tires Are Mounted on Rim
- Tires/Wheels - OE Tire Shake/Vibration Information
- Tires - Information On Proper Tire Pressure
- Wheels/Tires - Use Of Nitrogen Gas In Tires
- Tires/Wheels - Information on Tire Radial Force Variation (RFV)
- Engine - GM Dexos 1(R) And 2(R) Oil Specifications
- Wheels - Chromed Aluminum Wheel Staining/Pitting/Corrosion
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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.