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2006 Chevrolet Trailblazer 4WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2006 Trailblazer 4WD.

The 2006 Chevrolet Trailblazer 4WD is a midsize SUV that carries a 6-quart engine oil capacity with a 5W-30 API viscosity recommendation, and it sits within a model run that produced 1,346 total owner complaints across its history with 8 recalls issued—the most frequent complaint area being the fuel system in gasoline models, which emerged as a notable trouble spot during this generation; when viewed against the model's complaint trajectory from 1999 to 2024, this particular model year falls just after the 2005 peak of 1,733 complaints and well before the dramatic improvement that would later culminate in just 1 complaint by 2014, suggesting that while not the worst-performing year, the 2006 Trailblazer reflects a period of ongoing refinement before the model's reliability significantly stabilized.

Quick specs

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

Engine oil capacity6 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Lug nut torque100 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 78 · 600 CCA battery, OE oil filter 12731172. 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 78 · 600 CCAOEM · verified

Tire size245-65R17OEM · verified

OE service part numbers OEM · verified

Engine oil filter	12731172 alt 12731179
Engine air filter	19239713
Spark plug	12621258 alt 12681663
Battery	88866306
Front wiper blades	15214346
Serpentine belt	12576446 alt 12637202
Thermostat	12600171 alt 12570307

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length	191.7 in
Overall width	74.4 in
Overall height	74.4 in
Wheelbase	113 in
Curb weight	4418 lb
Track (front / rear)	62.2 / 62.2 in
Weight distribution (front / rear)	54/46

Service quick specs OEM factory data

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

This engine holds 6 qt of 5W-30 API engine oil, SYNTHETIC · 75W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 100 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 Fluid	ATF
Automatic Transmission Fluid Capacity	5
Brake Fluid	DOT 3
Differential Gear Oil	SYNTHETIC · 75W-90 · GL-5
Differential Gear Oil Capacity	3.6 qt
Engine Oil	5W-30 · API
Engine Oil Capacity	6 qt
Engine Oil	5W-30 · API

Engine torques

Intake Manifold to Engine Bolts	7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	15 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs
Engine Oil Pan Drain Plug	19.0 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs
Engine Valve Cover Bolts	9.0 ft-lbs

Chassis torques

Lug Nuts	100 ft-lbs
Transfer Case Fill Plug	20.0 ft-lbs
Transfer Case Drain Plug	20.0 ft-lbs

Ignition

Cylinder Firing Order	1-5-3-6-2-4
Cylinder Firing Order	1-8-7-2-6-5-4-3
Spark Plug Manufacturer	Ac Delco
Spark Plug Gap	.042 in
Spark Plug Torque	13 ft-lbs
Spark Plug Manufacturer	AC Delco
Spark Plug Type	AC 41-981
Spark Plug Gap	0.042 in

Battery & A/C

Refrigerant	R134a
Oil Group	PAG
Oil Type	46
Oil Capacity	8.00 oz
Standard BCI Group Number	78
Standard BCI Cranking Performance	600 cca
Standard BCI Group Number	78
Standard BCI Cranking Performance	600 cca

Service checks

Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	188-206 °F
Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	188-206 °F
Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi

Brakes

Torque Caliper to Bracket	23 ft-lbs / 31 ft-lbs
Torque to Knuckle	148 ft-lbs / 118 ft-lbs
Torque Caliper to Bracket	23 ft-lbs / 31 ft-lbs
Torque to Knuckle	148 ft-lbs / 118 ft-lbs
Minimum Pad Thickness	Front: 0.030; Rear: 0.030 specification
Rotor Max Parallel Variation	0.001 in
Rotor Runout Limit	0.002 in
Rotor Nominal Thickness From	1.14 in / 0.787 in

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

110 ft. lbs., step 2: 180

110 ft. lbs

Cylinder Head — tightening sequence 3 stages

Prep M11 bolts:

1	22 ft. lbs.	22 ft. lbs
2	90 degrees	90 degrees
3	70 degrees; M8 bolts: 22	70 degrees

Intake Manifold to Engine Bolts — tightening sequence 1 stages

3.7 ft. lbs., step 2: 7.4

3.7 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

11 ft. lbs., step 2: 18

11 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 mi	Exhaust System (Complete) (inspect) · Fuel System (inspect)
Every 50,000 mi	Engine Air Filter Element (replace) · Transfer Case Assembly (drain & refill)
Every 100,000 mi	Spark Plug Wires (inspect) · Spark Plugs (replace) · Transmission Fluid & Filter (replace)
At 150,000 mi	Accessory 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.

Owner complaints about the 2006 Chevrolet Trailblazer 4WD dominate in one area — the fuel system, gasoline, 463 of 1,346 reports (34%), well ahead of the next concern. None of this vehicle's 8 recall campaigns target the fuel system, gasoline, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 31 of the reports describe a crash and 64 a fire — a small share of the total, but worth weighing against the fuel system, gasoline pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

1,346

Owner complaints

31 involved a crash · 64 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’99 ’00 ’01 ’02 ’03 ’04 ’05’06’07 ’08 ’09 ’14 ’21 ’22 ’23 ’24

Owner complaints filed with NHTSA, by component

All 1,346 complaints on record, top 8 components.

Fuel System, Gasoline463

Electrical System119

Fuel System, Other104

Exterior Lighting96

Fuel/Propulsion System67

Visibility/Wiper40

Electrical System,Visibility30

Power Train29

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 8 campaigns on record for this vehicle.

15V519000Exterior Lighting:HeadlightsReported 14/08/2015

General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL… Remedy: GM will notify owners, and dealers will replace the HDM, free of charge. The recall began on May 17, 2016. Owners may contact Buick customer service at 1-800-521-7300 or Pontiac…

14V404000Visibility:Power Window Devices And ControlsReported 02/07/2014

General Motors LLC (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles… Remedy: GM will notify owners, and dealers will inspect the part number on the door module, and install a new door module if necessary, free of charge. Parts for the remedy are not…