According to Haynes, code 36 is either (5.7L) Distributer Ignition System or (3.4L) 24X Signal Circuit Error...faulty circuit error from coil pack to module.
Code 26: Evaporator Purge Circuit.
1976 Pontiac Firebird.
Rpm Red line 1968 Pontiac firebird 400 HO
Trouble Code P1640 means:Control module output A circuit
Trouble code P1336 means: CKP System Variation Not Learned
Get a key made at a GM dealer.They can fine the code # to match the car.
3:42
Generally speaking you can clear trouble codes by either removing the fuse to the engine control module or by disconnecting the battery. In either case the ignition should be off. Hope that helps.
Trouble code P0420 means: Catalyst System Low Efficiency (Bank 1)
Trouble code P0410 means: Secondary AIR System Performance
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0400 means: EGR System Performance