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1995 GMC Truck Sonoma 4WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1995 Sonoma 4WD.

The 1995 GMC Sonoma 4WD, with an engine oil capacity of 4 quarts and a specified 5W-30 API viscosity, accumulated 256 owner complaints—primarily targeting the service brakes—and was subject to 7 recalls. In the model’s complaint history from 1990 to 2005, this total sits just below the 1994 peak of 306 complaints and far above the 1990 low of a single complaint, marking the 1995 model year as a notably problematic entry in the Sonoma’s reliability record.

Quick specs

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

Engine oil capacity4 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 75 · 525 CCA battery, OE oil filter 12737090. Note the factory fuel filter and serpentine belt are now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. 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 75 · 525 CCAOEM · verified

Tire sizeP205-75R15OEM · verified

Wheel / rim7-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	12737090 alt 19210286
Engine air filter	25040929 alt 19259086
Fuel filter	25171792 discontinued
Spark plug	19302741 alt 19301812
Front wiper blades	15757007 alt 15757008
Serpentine belt	10179286 discontinued · alt 10230729
Thermostat	10190925 alt 24505924

Service quick specs OEM factory data

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

This engine holds 4 qt of 5W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque the oil drain plug to 18.0 ft-lbs. The firing order is 1-6-5-4-3-2. 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

Brake Fluid	DOT 3
Differential Gear Oil	80W-90 · GL-5
Differential Gear Oil Capacity	10.0 qt
Engine Oil	5W-30 · API
Engine Oil Capacity	4 qt
Engine Oil	5W-30 · API
Engine Oil Capacity	4 qt

Engine torques

Cylinder Head Steps	3
Cylinder Head Steps	Apply sealant GM P/N 12346004
Intake Manifold to Engine Bolts	17 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	10 ft-lbs
Intake Manifold to Engine Bolts	17.0 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	10.0 ft-lbs
Engine Oil Pan Drain Plug	19.0 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs

Chassis torques

Leaf Spring to Axle (U-bolts)	89.0 ft-lbs
Leaf Spring to Chassis Bracket	89.0 ft-lbs
Leaf Spring to Rear Shackle	89.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket	89.0 ft-lbs

Ignition

Cylinder Firing Order	1-6-5-4-3-2
Cylinder Firing Order	1-3-4-2
Cylinder Firing Order	1-6-5-4-3-2
Spark Plug Manufacturer	AC Delco
Spark Plug Torque	14 ft-lbs
Spark Plug Manufacturer	AC Delco
Spark Plug Gap	0.060 in
Spark Plug Torque	11-14 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	2.00 lbs
Oil Group	PAG
Oil Type	GM part number 12345923 or equivalent.
Oil Capacity	8.00 oz
Refrigerant	R134a
Refrigerant Capacity	1.75-2.00 lbs
Oil Group	PAG

Service checks

Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	192 °F
Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	188-206 °F
Engine Compression	100 Minimum psi
Engine Compression	215 Nominal psi

Brakes

Torque to Knuckle	38 ft-lbs
Minimum Pad Thickness	Front: 0.030; Rear: 0.030 specification
Rotor Max Parallel Variation	0.0005 in
Rotor Runout Limit	0.003 in
Rotor Nominal Thickness From	1.03 in
Rotor Nominal Thickness To	1.03 in
Rotor Minimum Machining	0.98 in
Rotor Discard at or Under	0.965 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 2 stages

1	short bolts	43 ft. lbs
2	turn 90

Cylinder Head — tightening sequence 4 stages

1	all bolts	22 ft. lbs
2	long bolts	75 degrees
3	medium bolts	65 degrees
4	55

Cylinder Head — tightening sequence 1 stages

short bolts

43 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

22.0

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 every 30,000 mi. The big-interval services (every 30,000 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.

At 7,500 mi	Drive Axle Assembly (drain & refill) · Throttle Body (torque) · Tire & Wheel Assembly (rotate)
Every 7,500 mi	Axle Shaft Oil Seal (inspect) · Body Latches, Locks & Hinges (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Differential (inspect fluid level)
Every 15,000 mi	Tire & Wheel Assembly (rotate)
Every 30,000 mi	Clutch Cross Shaft (lubricate) · Clutch Release Lever Pivot Points (lubricate) · EGR System (inspect) · Early Fuel Evaporation System (inspect) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill)
Every 60,000 mi	Accessory Drive Belt (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect) · Ignition Timing (inspect) · PCV System (inspect)
Every 100,000 mi	Spark Plugs (replace)

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 1995 GMC Truck Sonoma 4WD dominate in one area — the service brakes, hydraulic, 83 of 256 reports (32%), well ahead of the next concern. None of this vehicle's 7 recall campaigns target the service brakes, hydraulic, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 31 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the service brakes, hydraulic 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

256

Owner complaints

31 involved a crash · 0 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’90 ’92 ’93 ’94’95’96 ’97 ’98 ’99 ’00 ’01 ’02 ’03 ’04 ’05

Owner complaints filed with NHTSA, by component

All 256 complaints on record, top 8 components.

Service Brakes, Hydraulic83

Visibility54

Engine & Engine Cooling24

Fuel System, Gasoline13

Air Bags11

Electrical System8

Power Train8

Seats7

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 7 campaigns on record for this vehicle.

06E041000Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And FittingsReported 18/05/2006

CERTAIN R&B, INC. CENTRAL MULTIPORT FUEL INJECTION (CMFI) FUEL RETURN LINES, MODELS HELP 55163, NAPA BALKAMP 700-3270, AND THE CONNECTION 2560001, SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR THE VEHICLES LISTED ABOVE. THE… Remedy: R&B, INC. WILL NOTIFY OWNERS AND AT THE CUSTOMERS REQUEST, EITHER REPLACE THE FUEL LINE OR OFFER A FULL REFUND. THE RECALL BEGAN ON MAY 4, 2006. OWNERS MAY CONTACT R&B, INC. AT…

06E043000Fuel System, GasolineReported 19/05/2006

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18… Remedy: HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION…