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 MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSWARRANTY - GM DEALER EMPOWERMENT PROGRAMRETAIL USE OF AUTHORIZATION CODESCODE B
1990 Chevrolet Lumina APV V6-191 3.1L
Code B
1990 Chevrolet Lumina APV V6-191 3.1LSECTION Code B
Authorizes payment for repairs to be performed which repeat or overlap previously performed repairs. Allows you to consider authorizing repairs identical or similar to repairs that have previously been performed on the vehicle. Facts must support that the repair is justifiable and is not the result of previous improper, or incomplete workmanship or diagnosis.
Authorization for Repeat/Related Repair would be used in these instances:
^ Repairs caused by defective parts and/or workmanship on the part of the manufacturer.
^ Repairs previously but unsuccessfully attempted by a different authorized GM servicing agent, to address customer's complaint.
The following are not to be considered for Repeat/Related Repair authorization:
^ Improper diagnosis.
^ Inadequate technician training.
^ Use of improper tools, equipment and repair procedures.
^ Repairs by an independent shop or other individual.
^ GM part warranty claims.
^ Non-GM part failures or failures attributable to such parts.
It is the responsibility of the dealer to perform repairs correctly the first time. Authorization code "B" should not be used for the following repairs:
^ Wheel alignments.
^ Wheel balancing.
^ Paint repairs.
^ "Labor only" repairs. Authorization Code E - Other Labor Hours
Authorization for Repeat/Related Repair would be used in these instances:
^ Repairs caused by defective parts and/or workmanship on the part of the manufacturer.
^ Repairs previously but unsuccessfully attempted by a different authorized GM servicing agent, to address customer's complaint.
The following are not to be considered for Repeat/Related Repair authorization:
^ Improper diagnosis.
^ Inadequate technician training.
^ Use of improper tools, equipment and repair procedures.
^ Repairs by an independent shop or other individual.
^ GM part warranty claims.
^ Non-GM part failures or failures attributable to such parts.
It is the responsibility of the dealer to perform repairs correctly the first time. Authorization code "B" should not be used for the following repairs:
^ Wheel alignments.
^ Wheel balancing.
^ Paint repairs.
^ "Labor only" repairs. Authorization Code E - Other Labor Hours
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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.