MotorDeets

2004 GMC Sierra: Recalls, Problems & MPG

Here are the deets on the 2004 GMC Sierra: 7 recalls, 188 owner complaints and up to 17 mpg combined.

7vehicle recalls
188owner complaints
11mention a crash
17best combined mpg
2004 GMC Sierra
Photo: GPS 56 from New Zealand · CC BY 2.0 · Wikimedia Commons. Representative photo of this generation; trim may differ.

Recalls

7 vehicle recalls from the manufacturer, plus 3 equipment/tire recalls that can apply. Repairs are free. Check your VIN to see if one is still open on your car.

Brakes (hydraulic) Vehicle recall #04V045000 · 2004 · 68,875 vehicles

What's wrong: Certain sport utility vehicles, pickup trucks, and passenger vans fail to comply with the requirements of Federal Motor Vehicle Safety Standard no. 135, ?passenger car brake systems.? Some of these vehicles were produced with an out-of-specification brake hydro-boost housing relief valve bore.

Why it matters: Consequently, the valve o-ring seal May fracture. Steering efforts May be slightly increased while braking or parking. Under certain driving conditions, a fractured seal May require a slight increase in the applied brake pedal effort to achieve the same vehicle deceleration rate as prior to the…

The fix: Dealers are to replace the hydro-boost relief valve. The recall began on June 18, 2004. Owners should contact Cadillac at 1-866-982-2339; Chevrolet at 1-800-630-2438; GMC at 1-866-996-9463; or Hummer at 1-866-486-6376.

Body & structure Vehicle recall #04V129000 · 2004 · 3,662,211 vehicles

What's wrong: On certain pickup trucks and sport utility vehicles, the galvanized steel tailgate support cables that retain the tailgate in the full open (horizontal) position May corrode, weaken, and eventually fracture. If both cables fractured, the tailgate would suddenly drop and strike the top surface of the rear bumper.

Why it matters: Anyone sitting or standing on the horizontal surface of the tailgate when both cables fractured could be injured by falling from the tailgate. On vehicles that have had the bumper removed, the tailgate May drop even lower. Additionally, if there is cargo on the tailgate the cargo May fall off if…

The fix: Dealers will replace the cables. Interim owner notification began on April 7, 20004. The recall began on September 24, 2004, when replacement parts were available, and will continue through October 29, 2004. Owners should contact Cadillac at 1-866-982-2339, Chevrolet at 1-800-630-2438 or GMC at…

Seat belts Vehicle recall #04V225000 · 2004 · 736 vehicles

What's wrong: Certain extended and regular cab pickup trucks and cargo vans converted to compressed natural gas (cng) fail to conform to the requirements of Federal Motor Vehicle Safety Standard no. 225, 'child restraint anchorage systems.' these vehicles have one seating position, the center rear seat, equipped with child restraint lower anchorages.

Why it matters: The standard requires child seat lower anchorages in two seating positions for vehicles with three rear seating positions. The standard cab and cargo van vehicles, which only have front seating positions, have an air bag off switch to disable the front passenger air bag and do not have child…

The fix: To bring the standard cab and cargo van vehicles into compliance, dealers will inject epoxy into the air bag off switch to prevent air bag activation, relocate the switch behind the instrument panel and then install a cover over the resulting opening. The sun visor label and owner's manual will…

Brakes (hydraulic) Vehicle recall #05V043000 · 2005 · 77,411 vehicles

What's wrong: Certain trucks, sport utility vehicles, and vans equipped with bosch hydro-boost brake assemblies, the hydraulic brake booster pressure accumulator May crack and separate from the hydro-boost assembly during normal operating conditions.

Why it matters: If a separation occurred and the hood of the vehicle were open, fragments from the accumulator could cause injury to people in the immediate area. The presence of this crack or fractured surface could allow the hydraulic fluid to leak from the accumulator circuit of the booster assembly. The loss…

The fix: Dealers will test the hydro-boost assembly for functional operation of the two-function valve. If the hydro-boost assembly fails the test, dealers will replace the assembly free of charge. The recall began on March 23, 2005.

Seat belts Vehicle recall #05V163000 · 2005 · 1,359,824 vehicles

What's wrong: 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, especially smaller occupants, seated in this position. Appropriate use of a child seat or booster seat, as recommended for small children, does improve the fit condition for this user group. In addition to…

Why it matters: A lap portion of the seat belt routing that is not low and snug on the hips can allow the lap belt to ride up on an occupant's abdomen instead of fitting low around their hipbones, and therefore, can expose them to more risk of abdominal and internal organ injury.

The fix: 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 began on July 21, 2005.

Parking brake Vehicle recall #05V161000 · 2005 · 90,242 vehicles

What's wrong: On certain pickup trucks equipped with manual transmissions and built with either pbr parking brake systems or trw parking brake systems, the parking brake friction linings May wear to an extent where the parking brake can become ineffective in immobilizing a parked vehicle.

Why it matters: If the parking brake does not hold, unintended vehicle movement could occur, which could result in a crash.

The fix: Dealers will install a low-force spring clip retainer for vehicles equipped with a pbr parking brake system. On vehicles equipped with the trw parking brake system, dealers will install a redesigned parking brake cable assembly. The recall began on July 29, 2005.

Engine & cooling Vehicle recall #06V289000 · 2006 · 38,439 vehicles

What's wrong: On certain trucks equipped with an 8.1l v8 (rpo l8-VIN g) engine have a condition in which the engine fuel rail pulse damper retainer clip May fracture resulting in inadequate retention of the damper.

Why it matters: If the damper comes loose, a fuel leak May result. Fuel leakage, in the presence of an ignition source, could result in a fire.

The fix: Dealers will replace the engine fuel rail pulse damper retainer clip free of charge. The recall began on August 31, 2006.

3 aftermarket equipment / tire recalls replacement parts sold to fit this car, not the car itself
Equipment Equipment recall #04E022000 · 2004 · 8,000 vehicles

What's wrong: Aftermarket pickup truck over-the-rail bedliners manufactured for installation on 1999-2004 Chevrolet silverado and GMC sierra pickup trucks. The toggle wing assembly used to attach the bedliner to the truck bed is not engaging fully in the stake pocket of the pickup truck.

Why it matters: The bedliner can become detached from the pickup while it is motion, possibly endangering following motorists or pedestrians.

The fix: Durakon will issue a press release in attempt to notify customers that could have purchased the defective bedliner. If you purchased either a durakon allstar of patriot overrail bedliner since August 1, 2003, for 1999 to 2004 Chevrolet silverado or GMC sierra trucks, or purchased one of these…

Equipment Equipment recall #07E066000 · 2007 · 175 vehicles

What's wrong: Certain cequent 90 degree 7-way right angle adaptors sold by distributors in tow packages for aftermarket sales to tow 5th wheel rv travel trailers. Due to incorrect wiring of the harness, the trailer lights May not operate properly.

Why it matters: If the trailer lights are not working properly, a vehicle crash can occur.

The fix: All of the defective tow packages are still at the distributor level and have not been sold to any consumers.

Exterior lights Equipment recall #09E025000 · 2009 · 42,540 vehicles

What's wrong: Dope, Inc. is recalling 42,540 combination corner and bumper lamp assemblies of various part numbers sold for use as aftermarket equipment for various passenger vehicles. These headlamps fail to conform to the requirements of Federal Motor Vehicle Safety Standard no. 108, "lamps, reflective devices, and associated equipment." these lamps do not contain the required amber side reflectors.

Why it matters: Decreased lighting visibility May result in a vehicle crash.

The fix: Dope, Inc. will notify owners and offer a full refund for the noncompliant combination lamps. The safety recall began on July 28, 2009.

Most-reported problems

Owner complaints filed with NHTSA, by component. One complaint can list several components. 5 mention a fire, 14 injuries and 0 deaths were reported.

Brakes44
Electrical39
Brakes (hydraulic)28
Transmission & drivetrain18
Steering14
Body & structure9
Speed control / throttle8
Visibility (wipers, glass)7

What owners describe

The 2004 GMC Sierra has 188 owner complaints, ranking #11 of 28 Sierra model years for complaints (about average; the typical year has 140). Complaints peaked in 2005 (35 filed that year). The typical problem showed up when the car was about 3 years old, at a median of 49,752 miles. Neighboring years: 2003 (206 complaints, 6 recalls), 2005 (117 complaints, 9 recalls).

Engines & fuel economy (EPA)

EngineTransmissionDriveCityHwyComb.Fuel
5.3 L 8-cyl hybridAutomatic 4-spdRear-Wheel Drive161917Regular
5.3 L 8-cyl hybridAutomatic 4-spd4-Wheel or All-Wheel Drive151716Regular

Want the full repair deets? Get the factory manual.

Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2004 GMC Sierra.

eManualOnline Download (PDF), keep forever

Closest thing to the factory manual for most years. Pay once, keep it.

Most $25–$78, one-time
Check 2004 GMC Sierra manual
Mitchell 1 DIY Online access, factory-level data

Pro-shop repair procedures, wiring diagrams and TSBs for your exact car.

From $19.99/mo · $39.99/yr
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ALLDATAdiy Online access, factory OEM info

OEM procedures, specs and recall/TSB info, the same source many shops use.

From $19.99/mo · $59.99/yr
Check 2004 GMC Sierra manual
Haynes Print book or AllAccess online

Step-by-step photos written from a real teardown. Great for first-timers.

Books ~$30–$40 · AllAccess $34.99/mo
Check 2004 GMC Sierra manual

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FAQ

Does the 2004 GMC Sierra have any recalls?

Yes. NHTSA lists 7 vehicle recalls for the 2004 GMC Sierra, plus 3 equipment or tire recalls that can apply. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.

What are the most common 2004 GMC Sierra problems?

Owners have filed 188 complaints with NHTSA. The most-reported areas are brakes (44), electrical (39), brakes (hydraulic) (28).

What gas mileage does the 2004 GMC Sierra get?

EPA ratings run up to 17 mpg combined (5.3 L, Automatic 4-spd), across 2 engine and transmission combos.

Where can I get a 2004 GMC Sierra repair manual?

eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.

Other Sierra years

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