This 1992 Cadillac Deville came in with no blower operation. I checked at the blower motor which is on the right side of the picture behind the bar that goes between the two front strut towers. No power was present with the key on and blower set to high. The blower power module is behind … Continue reading “1992 Cadillac Deville, Blower Inop”
This 1989 Cadillac Deville came in with the park / tail lights staying on. This is a fairly common problem on 1980’s and early 1990’s Cadillacs with Twilight Sentinel headlight systems. The Twilight sentinel module is located on the rear of the dash panel behind the headlight switch. The following picture is taken from the … Continue reading “1989 Cadillac Deville Park / Tail Lights Stay On”
Cadillac Deville was sent to shop from another facility with complaint of a/c cycles off and will not come back on for several minutes and vent temperature goes warm. Checked codes and none were stored in the ECM, DIM or IPM. All data looked good and then the compressor cycled off after running at 2000 … Continue reading “2000 Cadillac Deville Erratic Compressor Operation”
Customer stated that fuel gauge always reads full but the trip computer is keeping track of fuel mileage and he has been using it to monitor fuel level. Checked codes and found codes stored for both fuel level signal voltage high and low. Consulted repair information and found little help. Wiring diagram shows signals from … Continue reading “2000 Cadillac Deville, Fuel Gauge Reads Full All Of The Time”
2000 Cadillac Deville with 4.6L engine was sent to my shop for surging idle. The engine has been changed. The IAC valve, TPS and MAP have been replaced with oem parts. The IAC valve harness connector did have the terminals spread and there was poor contact between harness connector and IAC valve. Replaced the connector … Continue reading “2000 Cadillac Deville, 4.6L, Surging Idle and Stalls”