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 MANUALSCHEVROLET1986C 10 P/U 2WD V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSI/M 240 REPAIRS - OBTAINING TECHNICAL ASSISTANCE
1986 Chevrolet C 10 P/U 2WD V8-350 5.7L
I/M 240 Repairs - Obtaining Technical Assistance
1986 Chevrolet C 10 P/U 2WD V8-350 5.7LSECTION I/M 240 Repairs - Obtaining Technical Assistance
File in Section: 6E - Engine Fuel & Emission
Bulletin No.: 43-65-06
Date: October, 1994
Subject:
Obtaining Technical Assistance for Vehicles Requiring VM 240 Repairs
Models:
1995 and Prior Passenger Cars and Trucks
To better support dealer technicians involved with repairing vehicles which have failed I/M 240 emissions tests, all divisional Technical Assistance staffs will accept calls from ANY General Motors dealership attempting to repair any of that division's products. Specifically, Technical Assistance engineers will now assist GM dealer technicians with emissions repairs on any of their division's products, regardless of whether the servicing dealership's sales and service agreement covers that product. This will optimize technical support for any GM technician attempting to perform emissions related repairs on a GM product.
This extension of Technical Assistance support does not alter Corporate warranty policy. Submission of claims for warranty reimbursement is allowed only by dealerships selling that vehicle brand.
This policy change is effective immediately, but pertains to I/M 240 emissions system repairs only. Please continue to use your respective divisional centers for all other repairs. All Technical Assistance phone numbers are listed in the General Motors Service Policies and Procedures Manual (Section 5.3).
Bulletin No.: 43-65-06
Date: October, 1994
Subject:
Obtaining Technical Assistance for Vehicles Requiring VM 240 Repairs
Models:
1995 and Prior Passenger Cars and Trucks
To better support dealer technicians involved with repairing vehicles which have failed I/M 240 emissions tests, all divisional Technical Assistance staffs will accept calls from ANY General Motors dealership attempting to repair any of that division's products. Specifically, Technical Assistance engineers will now assist GM dealer technicians with emissions repairs on any of their division's products, regardless of whether the servicing dealership's sales and service agreement covers that product. This will optimize technical support for any GM technician attempting to perform emissions related repairs on a GM product.
This extension of Technical Assistance support does not alter Corporate warranty policy. Submission of claims for warranty reimbursement is allowed only by dealerships selling that vehicle brand.
This policy change is effective immediately, but pertains to I/M 240 emissions system repairs only. Please continue to use your respective divisional centers for all other repairs. All Technical Assistance phone numbers are listed in the General Motors Service Policies and Procedures Manual (Section 5.3).
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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.