2003 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE

Fastener Tightening Specifications

Fastener Tightening Specifications

Application Specification
Metric English
Child Seat Latch Bracket Bolt 42 N.m 31 lb ft
Child Seat Latch Bracket Nut 42 N.m 31 lb ft
Front Seat Armrest Bolts, both Front and Rear 10 N.m 89 lb in
Front Seat Back Hinge Nuts 25 N.m 18 lb ft
Front Seat Cushion Trim Panel Screws 3 N.m 27 lb in
Lumbar Control Switch Screws 2 N.m 18 lb in
Power Seat Switch Screws 3 N.m 27 lb in
Rear Seat Armrest Nuts 3 N.m 27 lb in
Rear Seat Back Latch Bolts 6 N.m 53 lb in
Rear Seat Back Nuts 10 N.m 89 lb in
Rear Seat Back Pivot Bolts 10 N.m 89 lb in
Rear Seat Bolster Bolts 6 N.m 53 lb in
Seat Adjuster Motor Nut 10 N.m 89 lb in
Seat Adjuster to Floor Pan Bolts 42 N.m 31 lb ft
Seat Frame Bolts 25 N.m 18 lb ft
Factory Service Tools

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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.

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