2006–2009 Chevrolet Impala Bolt Sizes & Torque Specs

Lug nut torque is not verified for this summary. Review the cited evidence and exact hardware application before installation.

This page distinguishes source-backed fields, unresolved conflicts and unverified legacy records for the 2009 Chevrolet Impala. Match the exact hardware and manual conditions before maintenance. A source for one field does not verify the other specifications.

These specifications also apply to the 2006, 2007 and 2008 model years — identical specs on file for each year.

GM passenger cars, crossovers and trucks use different wheel hardware families, including seat-style differences that matter when buying aftermarket lugs. Match the listed row and the original seat type; do not infer a truck value from a car, or the reverse.

Common fastener categories on the 2009 Chevrolet Impala

Wheel / lug nut torque and thread spec (covered above)
Brake caliper bracket, mounting, and slide/guide-pin bolts are different fasteners. Confirm the exact axle, application and service-manual specification before reassembly.
Engine oil drain plug torque and tool size when this vehicle has a verified drain-plug record
Transmission pan, valve cover, and intake manifold bolts where the database has exact records
Suspension control arm, sway bar, tie rod end and ball joint torque
Spark plug torque only when a vehicle-specific spark-plug row is available
Differential cover bolts (RWD/4WD only) and transfer case fasteners

Repair guidance for this model year

For 2009 model-year work: Always use a calibrated torque wrench for safety-critical fasteners, and replace lock washers and crush washers on every reassembly.

Tools you will need

Metric socket set (8mm-22mm), 6-point impact-rated
Calibrated torque wrench (10-150 ft-lbs covers most automotive jobs; add a 0-250 ft-lbs wrench for truck lug nuts)
Breaker bar (24" minimum) for initial loosening
Penetrating oil (PB Blaster or Kroil) for any fastener over 5 years old
Replacement washers, threadlocker, anti-seize, or dry-thread preparation only when the exact service procedure specifies them

Frequently asked questions

What is the lug nut torque on a 2009 Chevrolet Impala?

Specification not verified for this lug nut summary. Do not substitute another model year's value.

What socket size do I need for the 2009 Chevrolet Impala lug nuts?

Confirm the socket against the actual lug nut; no size is assumed here.

Are the 2009 Chevrolet Impala fasteners metric or SAE?

Metric is the standard for this vehicle. Most fasteners on this vehicle are metric (M6, M8, M10, M12, M14). Bring a full metric set; SAE substitutes can round the head. Bolt-head markings are the fastest way to confirm grade and material at the bench.

Other Chevrolet Impala years

Same model, different model year — fastener spec may change. Always confirm against the year for your VIN.

→ 2009 Chevrolet Impala oil drain plug torque & size

All 7 2009 Chevrolet Impala fastener specs

Per-field evidence and legacy records for the 2009 Chevrolet Impala. A verified torque does not verify socket size, thread or part number. Unverified records are not installation instructions; conflicting specifications are withheld.

Wheels — 2009 Chevrolet Impala

Wheel and lug nut spec for the 2009 Chevrolet Impala. Lug Nut (All wheels). Torque: 100 ft-lbs (135 Nm) (legacy record, unverified). Socket size: not verified. Thread: M12x1.5 (legacy record, unverified). Part number: 84639994 (legacy record, unverified).

Engine — 2009 Chevrolet Impala

Engine bolt-by-bolt torque for the 2009 Chevrolet Impala, including the long block, valve covers, and intake. Oil Drain Plug. Torque: 18 ft-lbs (25 Nm) (legacy record, unverified). Socket size: 15mm (legacy record, unverified). Thread: M12x1.75 (legacy record, unverified). Part number: 55577568 (legacy record, unverified). Exhaust Manifold Bolt. Torque: 26 ft-lbs (35 Nm) (legacy record, unverified). Socket size: 15mm (legacy record, unverified). Thread: M10x1.5 (legacy record, unverified). Part number: not verified. Water Pump Bolt. Torque: 18 ft-lbs (24 Nm) (legacy record, unverified). Socket size: 13mm (legacy record, unverified). Thread: M8x1.25 (legacy record, unverified). Part number: not verified. Spark Plug. Torque: 11 ft-lbs (15 Nm) (legacy record, unverified). Socket size: 18mm (legacy record, unverified). Thread: M14x1.25 (legacy record, unverified). Part number: not verified. Engine Mount Through Bolt. Torque: 85 ft-lbs (115 Nm) (legacy record, unverified). Socket size: 18mm (legacy record, unverified). Thread: M12x1.75 (legacy record, unverified). Part number: not verified.

Suspension — 2009 Chevrolet Impala

Suspension and chassis fastener torque for the 2009 Chevrolet Impala — strut, control arm, and sway bar values. Lower Control Arm Rear Bolt. Torque: 85 ft-lbs (115 Nm) (legacy record, unverified). Socket size: 18mm (legacy record, unverified). Thread: M12x1.5 (legacy record, unverified). Part number: not verified.

New to torquing wheels? Read our How lug nut torque works — the complete guide for star-pattern sequence, re-torque intervals, and how to read a lug spec — then use the 2009 Chevrolet Impala numbers above.

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