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2005 Chevrolet Avalanche 4WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2005 Avalanche 4WD.

Transmission Automatic 4-spd

The 2005 Chevrolet Avalanche 4WD utilizes a 4-speed automatic transmission paired with an engine requiring 6 quarts of 5W-30 API oil, returning an EPA fuel economy of 8/11/9 mpg. This specific model year accumulated 206 owner complaints predominantly centered on the electrical system alongside 3 recalls, yet it occupies a distinctly improved position within the Avalanche's broader 2000-2013 reliability history. Compared to the 2002 peak of 673 complaints, the 2005 model sits far closer to the 2000 low of just 2 complaints, meaning it represents a more stable and less problematic chapter in the vehicle's lineage for researchers to evaluate.

Model year2012 2009 2005

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 torque140 ft-lbsOEM · verified

EPA fuel economy8/11/9 mpgEPA · 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 sizeC25, K25 LT245-75R16EOEM · verified

Wheel / rim7-J inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	12731172
Engine air filter	22845992 alt 15908916
Spark plug	12621258 alt 19299585
Battery	88861746
Front wiper blades	15214346 alt 10375583
Serpentine belt	12576447 alt 12637202
Thermostat	12600171 alt 12570307

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length	221.7 in
Overall width	79.1 in
Overall height	73.2 in
Wheelbase	130.3 in
Curb weight	5437 lb
Track (front / rear)	65.4 / 66.1 in
Weight distribution (front / rear)	52/48

Ratings & economy EPA / vPIC

EPA city / highway / combined	8 / 11 / 9 mpg
Drivetrain	4-Wheel or All-Wheel Drive
Recommended fuel	Natural Gas

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, SAE 75W · Synthetic in the differential, DOT 3 brake fluid. Torque lug nuts to 140 ft-lbs, the oil drain plug to 21.0 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	7.6-7.7
Brake Fluid	DOT 3
Differential Gear Oil	SAE 75W · Synthetic
Differential Gear Oil Capacity	2.75 qt
Engine Coolant	DEX-COOL OR EQUIVALENT
Engine Oil	5W-30 · API
Engine Oil Capacity	6 qt

Engine torques

Crankshaft Pulley and/or Damper Bolts	189 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	Bolts: 26 ft-lbs, nuts: 12 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs
Engine Oil Pan Drain Plug	21.0 ft-lbs
Engine Valve Cover Bolts	8.85 ft-lbs

Chassis torques

Leaf Spring to Axle (U-bolts)	74.0 ft-lbs
Leaf Spring to Chassis Bracket	125.0 plus 90 degrees ft-lbs
Leaf Spring to Rear Shackle	70.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket	70.0 ft-lbs
Lug Nuts	140 ft-lbs
Front Wheel Hub	177 ft-lbs

Ignition

Cylinder Firing Order	1-8-7-2-6-5-4-3
Spark Plug Manufacturer	AC Delco
Spark Plug Gap	0.060 in
Spark Plug Torque	15 ft-lbs
Spark Plug Manufacturer	AC Delco
Spark Plug Gap	0.040 in
Spark Plug Torque	11.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Oil Group	PAG
Oil Type	46
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
Fuel Pump Pressure Minimum	62.0 psi
Key ON Engine OFF (KOEO)	55-62
RPM	45-59 @ Idle rpm
Key ON Engine OFF (KOEO)	55-62
Fuel Pump Pressure Minimum	62.0 psi

Brakes

Brake Application	WITH RPO JC3, JC4, JH2 / WITH RPO JH6
Torque Caliper to Bracket	80 ft-lbs / 31 ft-lbs
Torque to Knuckle	129 ft-lbs / 122 ft-lbs
Brake Application	WITH RPO JC3, JC4, JH2 / WITH RPO JH6
Torque Caliper to Bracket	80 ft-lbs / 31 ft-lbs
Torque to Knuckle	129 ft-lbs / 122 ft-lbs
Minimum Pad Thickness	Front: 0.030; Rear: 0.030 specification
Brake Application	WITH RPO JC3, JC4, JH2 / WITH RPO JH6

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 4 stages

1	22 lb ft
2	M11 Bolts	90 degrees
3	M11 Bolts in Sequence-Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head	90 degrees
4	50

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

Intake Manifold to Engine Bolts — tightening sequence 1 stages

3.7 ft. lbs., step 2: 5.9 ft. lbs., step 3: 8.8

3.7 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) · Fuel Evaporative Emission Control System (inspect) · 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 2005 Chevrolet Avalanche 4WD dominate in one area — the electrical system, 62 of 206 reports (30%), well ahead of the next concern. None of this vehicle's 3 recall campaigns target the electrical system, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 4 of the reports describe a crash and 4 a fire — a small share of the total, but worth weighing against the electrical system 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

206

Owner complaints

4 involved a crash · 4 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’00 ’01 ’02 ’03 ’04’05’06 ’07 ’08 ’09 ’10 ’11 ’12 ’13

Owner complaints filed with NHTSA, by component

All 206 complaints on record, top 8 components.

Electrical System62

Power Train20

Air Bags19

Steering13

Fuel/Propulsion System12

Service Brakes8

Fuel System, Gasoline8

Tires7

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

05V055000Power Train:Manual Transmission:Shift Pattern IndicatorReported 14/02/2005

CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH AN AUTOMATIC TRANSMISSION, FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 102, "TRANSMISSION SHIFT LEVER SEQUENCE, STARTER INTERLOCK AND… Remedy: DEALERS WILL REPROGRAM THE INSTRUMENT PANEL CLUSTER FREE OF CHARGE. THE RECALL BEGAN ON FEBRUARY 14, 2005. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339, CHEVROLET AT…

05V163000Seat Belts:Rear/OtherReported 22/04/2005

ON CERTAIN CREW CAB PICKUP TRUCKS AND SPORT UTILITY VEHICLES, THE 2ND ROW CENTER OCCUPANT SEAT BELT ROUTING MAY MAKE IT DIFFICULT TO POSITION THE LAP PORTION OF THE SAFETY BELT LOW AROUND THE HIPS OF OCCUPANTS… Remedy: DEALERS WILL CUT OPEN THE GUIDE LOOP, REMOVE A PORTION OF THE LOOP, AND THEN THE REMAINING TWO SIDES SHOULD BE FOLDED OVER AND SECURED WITH A RETAINER FREE OF CHARGE. THE RECALL…

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 Avalanche 4WD. 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.

Group 78 battery Vehicles taking 6 qt Engine oil filter 12731172 Engine air filter 22845992 Spark plug 12621258 Battery 88861746

Reference guides

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

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 2005 Avalanche 4WD take?

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

Does the 2005 Avalanche 4WD have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Avalanche 4WD get?

EPA figures are 8 city / 11 highway / 9 combined mpg.