NEED SOME ADVISE I HAVE GOT A CHEV APV 3.8 A COUPLE AWEEKS AGO SET DTC 21 SO I SCANED AND FOUND FAULT WITH TPS DID FLOW CHART FOR DTC 21 SO I SWOPPED TPS FOR A NEW ONE ANYWAY YSERDAY VAN SET A DTC 22 (TPS SIGNAL VOLT. LOW ) ANYONE HAD SIM PROBS?? I DO NOT HAVE... Login to read more.