Nine problems related to underhood wiring have been reported for the 1997 Chevrolet Blazer. The most recently reported issues are listed below.
I have a 97 Blazer 4x4 with a little over 113k miles. I've been having problems with the voltage (I think) for a while now. The voltage meter swings from just above 9v to over 14v when I stop at a traffic light. I'm convinced the gauge is not to blame because when I put a load on it, it indicates 9v to 10. 5v, the dash lights dim, the headlights wil also dim. I've already replaced (3) altenators and the battery twice which in 4 months and everything is still the same. The gauge will read just above 14v when I'm am driving the truck with no problem but the minute I stop at a traffic light the voltage gauge drops down to 9v or 10. 5v depending on what accessories am runnning on my truck. Temperature and frequency between trips seems to not make a difference either. The only thing I have done to the truck even remotely connected to the electrical system is to swap the radio, but I used a wire harness to connect the wiring. I've checked and will recheck tonight for loose wires or bad grounds, but other than that I'm lost. Any help?.
1997 Chevrolet Blazer, when passing a semi on interstate, vehicle acted like it was missing, after passing, looked in mirror, saw smoke, pulled over, popped hood engine on fire unable to put out with extinguisher. . . Fire engulfed vehicle, completely totaling it.
Consumer stated after turning the vehicle off it caught on fire. Dealer notified. The fire had taken place near the front of the vehicle.
At start up, consumer saw smoke on right side of hood, then flames. Dealer determined it was an electrical problem.
Electrical system malfunctioned. Vehicle has become undriveable. Three wire harnesses have melted. Consumer states the melting may have continued over a period of time working through fusible links, this caused problems with the ses sensor, gas gauge, and power steering. Fuel pump and module were also replaced.
While parked vehicle caught on fire under hood due to an electrical short. Vehicle was totalled. Dealer has been notified.
Engine check light problem is an ongoing issue with both current and former owner. 3 different mechanics put ther scanners on the vehicle and keep bringing up the oxygen sensor as the problem. Had one bad sensor at the wiring harness plug which was poorly assembled at the factor causing water to get to the contacts and contaminated the connector. Replaced all 4 O2 sensors and still cannot get the check engine light to go away. Vehicle performs perfect along with 24 mpg gas one highway driving. This is an issues other Blazer owners are experiencing. Gm should be held accountable to fix this issue.
Consumer stated vehicle was parked in garage for an hour when fire started in the engine compartment. Cause unknown.
Transmission had to be rebuilt after blowing. Transmission now jerks intermittently from 1st to 2nd. Brake pads wear extremely quick. Wiring harness under drivers seat had multiple shorts, causing no power seats, power locks, and flahing interior lights while driving.