1995 Chevy Tahoe Service Engine Soon Light coming on

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.

These older vehicles have an earlier version coding system that allows you to inexpensively check the codes yourself. You can buy a relatively cheap tester that plugs into the port under your dash just left of the steering column at most auto parts stores. This will cause your check engine and stop engine lights to flash codes. For example: you plug in the tester and turn your ignition key to the run position. The check engine light flashes three times, pauses for 2-3 seconds and flashes four times. This is code 34. You usually get a basic code breakdown book with the tester that will tell you what the basic codes are. If you get a cose flashed that is not in the booklet that comes with the tester, take the vehicle in for further diagnosis. A large number of smaller repair shops have the tester you need if you know someone they might let you borrow it. It beats paying $60-$100 for a diagnostic or paying $200-$300 for a digital code reader. Hope this helps.