I recently bought a 2001 two wheel drive blazer. Before I purchased it the gas pump was replaced. When I drive it all of the guages read normally, but sometimes the gas guage will read e and the anti lock brake light and the air bag light will come on. This goes back and forth with no reason. Any ideas why or what to check?

 

Are there any codes if so post them up. If you have a scanner capable of reading ABS and SRS codes.

 

Could be poor solder joints on the instrument cluster printed circuit board. When it starts acting up, use an open palm and smack the dash directly above the speedometer. The cluster electrical connector is at the top of the cluster, directly under the dash about 3/4". The vibration from smacking the dash usually jars it enough to affect the connection. If the lights blink, or start working normally, the solder joints need to be re-flowed. The cluster must be removed and disassembled to repair it.