Saturn Astra P1101
We replaced the MAF, air filter, disconnect battery, replaced fuze & had computer reset & eng light keeps coming on.
I do know that GM has a recall about DME ( ecm ) it has to be reprogram for emission reason thay maybe your problem I had mine done @ Chevy dealer give them last 8 of the vin and they can see if you have any open recalls or campaigns I do know it covred for 8/80
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