I have a 92 Olds Cutlass Ciera with 377 000 Kms and recently my engine light has been coming on briefly (for about 10 secs). It only comes on when the engine is cold. Once it gets warm it doesn't come back on. I diagnosed the ECM and it gave me a code of 26. In my Haynes book it tellls me it is a Quad Driver module circuit.
Does anybody know what this is and what will it take to fix it. Any help would be apprieciated.
Quad driver is a circuit in you computer, to replace it you need to replace the whole computer, but sometimes the temperture sending unit sets off that code check that first. I had the same problem with a Saturn.