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EquipmentPart report

2003 GMC Sierra Equipment Problems

Complaints
3about this part
Share
1%of 206 total for the year
Median mileage
26,150miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the equipment of the 2003 GMC Sierra, 1% of the 206 complaints for this model year. Where a mileage was given, the median is 26,150 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I have a 2003 Gmc Sierra 1500. At 1300 miles, I lost a fitting that connects the transmission line to the radiator for the tranny cooler and the transmission was destroyed. A rebuilt transmission was put in my pickup. I now have 32000 miles on it and the transmission seems to double shift between 2nd and 3rd gear. I've had my truck in the shop 5 times to diagnose this problem. The dealership cannot reproduce/find the issue. The pressure control solenoid was replaced about 4 days ago. The transmission is still acting up.”

NHTSA complaint #10081298, filed 2004-07, 1,300 miles

“I have a 2003 Gmc Sierra and the speedometer is stuck at 45-60 MPH, and goes up past the 120 MPH mark when in motion. I believe this is a serious safety hazard, and from a search online, I found that this problem is found on many other 2003-2006 GM trucks. This needs to be recalled immediately due to expired warranties for many other GM truck owners that have this faulty speedometer problem, and the expensive cost to repair/replace. Thank you.”

NHTSA complaint #10175893, filed 2006-12

Related service bulletins

Equipment: other model years

YearComplaintsShare of year
201411%
201112%
200913%
200612%
200522%
200432%
200331%
200221%
200121%
200041%
199951%
199832%
199642%
199552%
199453%
199334%

Other parts of the 2003 GMC Sierra

Brakes
83 complaints
Electrical system
31 complaints
Transmission and drivetrain
29 complaints
Steering
27 complaints
Vehicle speed control
12 complaints
Engine cooling
9 complaints
Fuel system
7 complaints
Body and structure
6 complaints
Suspension
6 complaints
Air bags
5 complaints
Tires
5 complaints
Other or unknown
4 complaints

← All problems reported for the 2003 GMC Sierra

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology