The fuel level sensor in the fuel tank may fail causing erratic fuel gauge operation. Our technicians tell us that on high mileage vehicles you may wish to replace the complete fuel pump module assembly if this condition occurs.
Problems for specific Chevrolet Blazer years:
Car problem reports
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Most reported 2001 Chevrolet Blazer problems
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The CD player in the radio may fail. Our technicians tell us that the radio will need to be removed and sent out to a radio repair shop to correct this condition.
A fluid leak may develop from the transmission output shaft seal. This leak may cause the transmission mount to become oil soaked and require replacement of the mount along with the leak repair.
The transmission output shaft seal may leak transmission fluid. On 2WD models, this leak can cause the transmission mount to become oil soaked, which will require replacement of the mount along with the leak repair. On 4WD models, if this seal leaks, the fluid will leak into the transfer case, causing it to become overfull.
when the check engine light comes on due to a secondary air injection pump code the following has most likely happened. the check valve(s) have failed causing exhaust gas to enter the pump and blow the 30 amp fuse(located under the battery holding tray)the solution is to check the pump with jumper wires to see if it stil works and it should.remove and replace the check valves then replace the 30 amp fuse.reinstall the battery and drive.