Problems · by component

2002 Chevrolet Blazer electrical system problems

25 owner complaints to NHTSA about the 2002 Chevrolet Blazer cite electrical system, 10% of all 259 complaints for this model year.

Complaints
25
10% of all complaints
Crashes
0
Reported by owners
Fires
3
Reported by owners
Injuries
5
Reported by owners
01 —Owner reports

What owners say about the electrical system

Verbatim from NHTSA complaints, newest first
“The Blazer is showing many codes in the ECM, even though it seems to be running properly. The codes include: p0171, p0174, p0101, p0128, p0155, p0300, p1870, p0128, p0155. The dash recently showed warning lights for parking brake, ABS, and Service Engine soon. It was checked a few days ago by a local repair shop. Two previous recalls showed multifunction switch failures which affected many vehicles.”
Owner complaint to NHTSAFiled Nov 6, 2023Electrical systemODI 11553900
“MY BRAKE LIGHTS WENT OUT. THE THIRD BRAKE LIGHT. AS I OWED A 2001 GMC JIMMY THAT HAD THE SAME PROBLEM THAT WAS COVERED UNDER A RECALL I KNEW THAT THE MULTIFUNCTION SWITCH IN THE STEERING COLUMN WAS THE PROBLEM. I WENT TO MY LOCAL CHEV DEALERSHIP (KOEHNE CHEV) IN MARINETTE WI. THEY SAID THERE WAS NO RECALL ONE MY VEHICLE. I ASKED ABOUT THE THREE TSB AND THEY SAID THEY DON'T HAVE TO DO ANYTHING WITH A TSB. I KNOW THIS IS A ONGOING AND A SAFETY ISSUE (NO BRAKE LIGHTS). THE PART NUMBER ON THE SWITCH THAT I TOOK OUT IS 26096832. THERE HAS TO BE HUNDREDS OF THOUSANDS OF GM VEHICLES WITH THESE SWITCHES IN THEM WITH THE POTENTIAL FATAL ACCIDENTS WAITING TO HAPPEN!!!”
Owner complaint to NHTSAFiled Mar 20, 2020Electrical system, Exterior lightingODI 11318861
“TL* THE CONTACT OWNS A 2002 CHEVROLET BLAZER. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE STALLED AND THE LOW FUEL AND SECURITY WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE FUEL PUMP WAS REPLACED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 169,272.”
Owner complaint to NHTSAFiled Apr 25, 2017Electrical system, Fuel/propulsion systemODI 10980478
“TL* THE CONTACT OWNS A 2002 CHEVROLET BLAZER. THE CONTACT STATED THAT THE FAILED TO TURN OFF WHEN THE KEY WAS REMOVED OUT THE IGNITION SWITCH. THE CONTACT HAD TO DISCONNECT THE BATTERY IN ORDER TO SHUT THE VEHICLE OFF. THE VEHICLE WAS TAKEN TO THE DEALER WHO REPLACED THE IGNITION SWITCH. THE MANUFACTURER WAS MADE AWARE OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 241,000.”
Owner complaint to NHTSAFiled Jun 19, 2014Electrical systemODI 10604532
“IN MARCH OF 2010, MY DRIVERS SIDE BRAKE LIGHT WENT OUT BUT THE BULB STILL LIT UP. IT IS A DUAL FILAMENT BULB, ONE FOR TAIL LIGHTS AND THE OTHER FOR BRAKE/TURN SIGNAL. MY MECHANIC INVESTIGATED AND THE ISSUE WAS A FAULTY SWITCH FOR THE BRAKE LIGHT. THIS IS A PART THAT CAN ONLY BE PURCHASED FROM THE DEALER. NO AFTERMARKET SWITCHES/CIRCUIT BOARDS ARE AVAILABLE. THE WHOLE CIRCUIT BOARD MUST BE REPLACED. AGAIN ON 9/1/12, I WAS NOTIFIED THAT BOTH MY BRAKE LIGHTS ARE OUT. I CALLED GENERAL MOTORS AND WENT TO MY LOCAL DEALERSHIP ONLY TO BE TOLD MY VEHICLE IS NOT UNDER A RECALL. I RESEARCHED AND FOUND RECALL: 01073 ISSUED BY GENERAL MOTORS FOR THE EXACT ISSUE MY VEHICLE IS HAVING WHICH WAS EXPANDED TO INCLUDE MORE VEHICLES BUT STILL NOT MINE. GM IS PROFITING FROM SELLING THESE DEALER ONLY PARTS WHEN THEY FAIL ASIDE FROM SAVING MONEY BY NOT ISSUING THE RECALL TO ALL AFFECTED VEHICLES. *TR”
Owner complaint to NHTSAFiled Sep 5, 2012Electrical system, Exterior lightingODI 10473929
“AIR BAG LIGHT ON 33,000 MILES,DEALER REPLACED AIR BAG CONTROL MODULE UNDER CENTER CONSOLE. 33,500 MILES AIR BAG LIGHT ON AGAIN,DEALER RESET LIGHT.AT 35,100 MILES AIR BAG LIGHT ON AGAIN AND GOES ON AND OFF EVERY 5-MINUTES TO THIS DAY WITH 54,000 MILES. THIS NEEDS A RECALL FOR GM ASAP. PLEASE INVESTIGATE! *TR”
Owner complaint to NHTSAFiled Sep 24, 2011Electrical system, Air bagsODI 10426995

Showing 6 of 25 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Other 2002 Blazer problem areas