2003 GMC Sierra HD GMC Sierra HD 2003

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2003 GMC Sierra HD repairs by problem area

Engine (31%)

Transmission and Drivetrain (21%)

Brakes and Traction Control (14%)

Suspension and Steering (21%)

Electrical and Air Conditioning (14%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (0%)

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Chart based on 29 repairs.
See TSBs and recalls for the 2003 GMC Sierra HD.

2003 GMC Sierra HD engine repair cost distribution

$2500+ (22%)

$1000 - $2499 (44%)

$500 - $999 (0%)

$100 - $499 (22%)

< $100 (11%)

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Chart based on 9 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2003 GMC Sierra HD

Engine not specified

152500 mi

US $1400
Water pump failure. Replaced part. 
92000 mi

US $1400
Fuel lines were rusted and leaking. 

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2003 GMC Sierra HD 4-door

turbocharged 8-cylinder diesel automatic 4WD

117000 mi

US $300
Water pump, which has one fastener behind harmonic balancer and 275# bolt. $1200 pro estimate. 
128200 mi

US $75
The power steering pump I replaced earlier (without reservoir) began leaking badly from the reservoir seal and had to be replaced again. In fairness to GMC, this was a part supplier issue and I used a "with attached reservoir" this time. 
140000 mi

US $120
Cracked fuel filter head 
166000 mi

US $2000
Injectors had been hazing at idle for months and finally became too bad to endure. R&R all 8. 
97900 mi

US $1300
Symptom of long cranking time while starting. (DURAMAX Diesel) Diagnosed as needing all new fuel injectors. Initial bill was $5800. Negotiated to get GM to cover parts given bulletin on FI failure. 
118000 mi

US $2500
Fuel lines near tank were corroded and failed. Upgraded to aftermarket lift pump and filtration system and replaced all fuel lines. 
149000 mi

US $4000
Fuel injectors were failing and needed to be replaced. 

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2003 GMC Sierra HD Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2003 GMC Sierra HD problems occur, check out our car reliability stats.