SOURCE: replace thermostat 2003 pontiac montana
yes but with the right shaped wrenches and tiny hands it can be done without removing the exhaust crossover pipe
SOURCE: Check Engine Light on and flashing on Montana 2001
Most major Autoparts stores will get the Diagnostic codes from car computer and give you info on why light is on and what the problem is.
SOURCE: 2003 pontiac grand am gt security light is on constant
no way around it need a new ignition switch immobilizer is bad
SOURCE: 2000 pontiac montana doesn't start and security
Very common problem on these cars. Do you have another key you can use? Try it. If not take the key ou have been using and turn ket to the on posistion. Leave it there on for ten to fifteen minutes. The computer will relearn the chip code on key. When light stops blinking you know it is done. Turn key to off wait ten to fifteen seconds and turn key to on position, Security light may blink once or twice then it should stop.. Try to start vehicle. It should start. If it doesn't then you may need whats called a new passlock and possibly key reprogramming. Which can only be done at the dealer most of the time. Hope car starts with the first procedure. Let me know if it works.
SOURCE: 2003 Montana, Pontiac. Service engine soon.
maybe just temporary--but usually means 02 sensor conditions or vacuum leak--get car scanned with a tech ll
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