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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSSPARK PLUG - TORQUE SPECIFICATION UPDATE
1990 Chevrolet Lumina APV V6-191 3.1L
Spark Plug - Torque Specification Update
1990 Chevrolet Lumina APV V6-191 3.1LSECTION Spark Plug - Torque Specification Update
9216chevy04
Number: 91-79-6A
Section: 6A
Date: October 1990
Corporate Bulletin No.:
Subject:
SPARK PLUG TORQUE SPECIFICATIONS
Model and Year:
1990 CELEBRITY
1990-91 BERETTA, CORSICA CAMARO,
CAVALIER AND LUMINA,
1990-91 U VAN (APV)
TO: ALL CHEVROLET DEALERS
When installing spark plugs in the 3.1L engine use the following revised specification in the Service Manuals listed below:
Cast Iron or Aluminum Heads, 15 N-m (11 lbs.ft.)
1991 Lumina Pages 6D4 - 4, 5, 7
Cavalier Pages 6A3 - 19
Camaro Pages 6A2 - 31
Pages 6D4 - 7, 9
Corsica/Beretta Pages 6D4 - 3, 6
Pages 6A5 - 24
Lumina (APV) Pages 6A4 - 20, 46
and 6D4 - 6
1990 Celebrity Pages 6D4 - 3, 5
Lumina Pages 6D4 - 4, 5, 6
Cavalier Pages 6A3 - 19
Pages 6D4 - 3
Camaro Pages 6A2 - 30
Pages 6D4 - 7, 8
Corsica/Beretta Pages 6A5 - 20
Pages 6D4 - 2
Lumina (APV) Pages 6A4 - 17, 41
and 6D4 - 6
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.