2003 Chevrolet Impala Electrical System Problems
NHTSA component category: ELECTRICAL SYSTEM · data through 07/14/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How electrical system ranks on this vehicle
Share of the 694 complaints citing each category; one complaint can cite several. Full breakdown on the 2003 Chevrolet Impala overview page.
What owners report
“: THE CONTACT STATED THE ENGINE AND ALL THE ELECTRICAL SYSTEM TURNED OFF WHILE DRIVING 40 MPH. THE IGNITION WAS TURNED ON RIGHT AFTER, HOWEVER…”NHTSA complaint 10162886 — filed 07/19/2006
“2003 IMPALA LS - HEADLIGHTS GO OFF WHILE DRIVING. JUST SHUT OFF. DOESN'T MATTER IF MANUAL HEADLIGHT SWITCH IS ENGAGED OR NOT. INTERMITTENT FAILURE, SOMETIMES…”NHTSA complaint 10161244 — filed 07/02/2006
“: THE CONTACT STATED THE VEHICLE IS EQUIPPED WITH AUTOMATIC DOOR LOCKS. THIS FEATURE LOCKS THE DOORS AUTOMATICALLY WHEN THE VEHICLE IS PUT INTO DRIVE…”NHTSA complaint 10153241 — filed 03/20/2006
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2003 Chevrolet Impala have electrical system problems?
Electrical System is the most-reported problem area on the 2003 Chevrolet Impala: 231 of 694 complaints on file (33.3%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2003 Chevrolet Impala have in total?
694 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 32 involved a crash, 32 involved a fire, 26 reported injuries, and none reported deaths.
What does NHTSA's electrical system category include?
NHTSA assigns each complaint to standard component categories; this page reports the ELECTRICAL SYSTEM category exactly as NHTSA defines and records it.
