Where is the ecu located
Under the drivers seat.
SOURCE: location of thermostat
dead center rear of engine behind water out let (elbow pipe) two screws
SOURCE: Electronic Control Module Installation 1994 G20 Chevy Van
I just had the same problem. If it is a regular van try under the driver seat in a plastic box. If it is a conversion van try in a pannel just behind driver seat on side of van wall behind a pannel that looks like a vent.
SOURCE: How do you set the timing on a 350 chevy engine in
If the distributor hasn't been taken out, the timing can be set manually but you have to disconnect the distributor wire behind the glove box inside the cab. Tan wire with white tracer it is taped up to the a multi wire harness but is the only one with a single plug. Disconect the plug and use your timing light on the timing mark to set timing per specs. Rotate the distributor as needed to advance or retartd as required for the correct setting. tighten the dizzy clamp and plug the tan wire back together. The computer will now be fooled asd to what the base timing is and advance from there.
Contrary to popular belief, 96' and up do not have this wire. Timing has to be done with a programmable scanner.
Dan
Hope this helps.
SOURCE: ECU Location 88 S-10 Blazer?
Hi do you mean VCM (vehicle control module)
if so right hand side of the engine compartment
there are 3 connectors BLUE CLEAR RED and BLACK
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