PontiacG82009Overview/pontiac/g8/2009/base/

2009 Pontiac G8

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2009 G8.

Body PASSENGER CAR

The 2009 Pontiac G8 is a passenger‑car built on Pontiac’s compact‑luxury platform, equipped with a 7‑quart engine oil capacity that calls for 5W‑30 API‑rated oil. In a three‑year span from 2008 to 2010, the G8’s 2009 model year topped the complaint chart with 144 owner reports—chiefly centered on air‑bag issues—while only four recalls were issued that year, and the following 2010 model saw a dramatic drop to a single complaint. This sharp contrast places the 2009 G8 at the peak of its reliability curve, underscoring the need for diligent attention to its air‑bag system in any research or evaluation of the vehicle’s long‑term dependability.

Model year20092008

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity7 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
Lug nut torque125 ft-lbsOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 94R · 720 CCA battery, OE oil filter 12690386. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 94R · 720 CCAOEM · verified
Tire sizeP245-45VR18OEM · verified
Wheel / rim8.0-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter12690386 alt 12577653
Engine air filter92066873
Fuel filter92203248
Spark plug19300872 alt 12680072
Front wiper blades92219233 alt 92219234
Serpentine belt92248982 alt 92068285
Thermostat89018168 alt 12600171
Cabin air filter92184248

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length196.1 in
Overall width74.4 in
Overall height57.9 in
Wheelbase115 in
Curb weight3885 lb
Track (front / rear)62.2 / 63.4 in
Weight distribution (front / rear)50/50

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the G8 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

4.5–5.0 sec0–60 mph (tested)quickest 4.50 sec — 2009 GXP Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
2009GXP Sedan 6.2L V84.50 sec13.00 sec415 hpRWD
2009GXP Sedan 6.2L V84.70 sec13.30 sec415 hpRWD
2009GXP Sedan 6.2L V84.70 sec13.30 sec415 hpRWD
2009GXP Sedan 6.2L V85.00 sec13.20 sec415 hpRWD
2008GT Sedan 6.0L V85.20 sec13.80 sec361 hpRWD
2008GT Sedan 6.0L V85.30 sec13.80 sec361 hpRWD
2008GT Sedan 6.0L V85.30 sec13.80 sec361 hpRWD
2008GT Sedan 6.0L V85.60 sec14.10 sec361 hpRWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 7 qt of 5W-30 API engine oil, GM P/N 92184900 OR EQUIVALENT in the differential, DOT 3 brake fluid. Torque lug nuts to 125 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-8-7-2-6-5-4-3. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity6
Brake FluidDOT 3
Differential Gear OilGM P/N 92184900 OR EQUIVALENT
Differential Gear Oil Capacity2.5 qt
Engine Oil5W-30 · API
Engine Oil Capacity7 qt
Engine Oil5W-30 · API

Engine torques

Intake Manifold to Engine Bolts17 ft-lbs
Exhaust Manifold to Cylinder Head Bolts15 ft-lbs
Engine Oil Pan Drain Plug22.0 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs
Engine Valve Cover Bolts7.4 ft-lbs

Chassis torques

Lug Nuts125 ft-lbs

Ignition

Cylinder Firing Order1-6-5-4-3-2
Cylinder Firing Order1-8-7-2-6-5-4-3

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.28 lbs
Oil GroupPAG
Oil Type46
Oil Capacity3.30-4.70 oz
Standard BCI Group Number94R
Standard BCI Cranking Performance720 cca
Standard BCI Group Number94R

Service checks

Pressure Test15 psi
Radiator Cap Pressure Relief15 psi
Thermostat Opening Temperature180 °F
Pressure Test15 psi
Radiator Cap Pressure Relief15 psi
Thermostat Opening Temperature186 °F
Pressure Test15 psi
Radiator Cap Pressure Relief15 psi

Brakes

Torque Caliper to Bracket31 ft-lbs
Torque Caliper to Bracket31 ft-lbs
Torque to Knuckle81 ft-lbs
Torque Caliper to Bracket31 ft-lbs
Minimum Pad ThicknessFront: 0.118; Rear: 0.118 in
Rotor Max Parallel Variation0.001 in
Rotor Runout Limit0.002 in
Rotor Nominal Thickness From1.181 in

Multi-step torque procedures OEM · verified

Torque to Knuckle — tightening sequence 1 stages
1120
Torque to Knuckle — tightening sequence 1 stages
190
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
174 ft. lbs., step 2: 15074 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1150 ft. lbs., step 2: 360 degrees, step 3: 50 ft. lbs., step 4: 230150 ft. lbs
Cylinder Head — tightening sequence 2 stages

Prep M11 bolts

122 ft. lbs.22 ft. lbs
2150 degrees; M8 bolts 9-10150 degrees
111 ft. lbs.11 ft. lbs
275 degrees; Do not reuse cylinder head bolts. Do not allow oil on cylinder head, head bolt bosses.75 degrees
Cylinder Head — tightening sequence 3 stages

Prep M11 bolts 1-10

122 ft. lbs.22 ft. lbs
290 degrees90 degrees
370 degrees; M8 bolts 11-1570 degrees
122 ft. lbs.22 ft. lbs
222
Cylinder Head — tightening sequence 3 stages

Prep M11 bolts 1-10

122 ft. lbs.22 ft. lbs
290 degrees90 degrees
370 degrees; M8 bolts 11-1570 degrees
122 ft. lbs.22 ft. lbs
222
Intake Manifold to Engine Bolts — tightening sequence 1 stages
13.7 ft. lbs., step 2: 7.43.7 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
16.6 ft. lbs., step 2: 156.6 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
13.7 ft. lbs., step 2: 7.43.7 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
16.6 ft. lbs., step 2: 156.6 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 100,000 mi; coolant at 150,000 mi. The big-interval services (at 150,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 25,000 miExhaust System (Complete) (inspect) · Fuel System (inspect)
Every 50,000 miEngine Air Filter Element (replace)
Every 100,000 miSpark Plugs (replace) · Transmission Fluid & Filter (replace)
At 150,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2009 model year represents the peak of reported activity in the G8’s brief generation, with consumer complaints doubling from 71 in 2008 to 144, while recall volume held steady at four campaigns and investigations remained at zero. This spike was driven predominantly by air bag concerns (59 complaints) and suspension issues (17), contrasting sharply with 2010’s near-total collapse to just one complaint and zero recalls, suggesting 2009 bore the brunt of first-run quality challenges or heightened reporting during its primary ownership cycle. Technical Service Bulletins followed a similar arc, rising slightly from 949 in 2008 to 997 in 2009 before dropping to 929 in 2010, indicating dealer service intensity mirrored the complaint trend. With crash and fire complaints registering minimal at six and one respectively, and no federal investigations opened, the data points to concentrated but non-catastrophic issues rather than systemic safety defects. Prospective buyers should view 2009 as the statistically weakest year of the trio, requiring diligent verification of air bag and suspension maintenance history, though the stable recall count suggests problems were addressable rather than endemic. If service records are complete, it remains a viable acquisition, but the 2010 model year presents a cleaner risk profile based on complaint volume alone.

4
Open recalls
NHTSA campaigns
997
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
144
Owner complaints
6 involved a crash · 1 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 144 complaints on record, top 8 components.

Air Bags59
Suspension17
Electrical System8
Power Train6
Exterior Lighting4
Structure3
Engine3
Seat Belts3

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

15V399000Seat BeltsReported 23/06/2015

General Motors LLC (GM) is recalling certain model year 2011-2013 Chevrolet Caprice vehicles manufactured October 15, 2010, to October 22, 2013, and 2008-2009 Pontiac G8 vehicles manufactured July 25, 2007, to February… Remedy: GM will notify owners, and dealers will replace the seat belt tensioner assembly which includes the steel cable, free of charge. These replacement parts reposition the tensioner…

14V540000Electrical System:IgnitionReported 09/09/2014

General Motors LLC (GM) is recalling certain model year 2011-2013 Chevrolet Caprice vehicles manufactured October 15, 2010, to December 6, 2013, and 2008-2009 Pontiac G8 vehicles manufactured July 25, 2007, to February… Remedy: GM will notify owners, and dealers will remove the key blade from the original flip key/RKE transmitter assemblies, and cut and fit a revised key blade and housing assembly, in…

Technical service bulletins NHTSA · verified

Showing 5 of 997 bulletins on record with NHTSA.

BulletinDateComponentSummary
135982025-09-09Unknown Or OtherNew Vehicle Monitoring Programs Section in IVH
PIC5650M2025-08-06Unknown Or OtherThis Preliminary Information communication provides information to the technician about…
PIP5601C2025-07-18Unknown Or OtherThis PI communicates the requirement to provide a pico file to receive diagnostic…
PIT5074R2025-05-30Unknown Or OtherThis Preliminary Information communication provides information to the technician about…
PIT5074R2025-05-30Unknown Or OtherThis Preliminary Information communication provides information to the technician about…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific G8. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2009 G8 take?

7 qt of 5W-30 API, per the factory manual.

Does the 2009 G8 have open recalls?

NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.