- 03-13-14 09:55 PM #1Cadillac Owners Fanatic
- Automobile(s): 2004 CTS 3.6 , 74 chevy caprice
- Join Date
- Jan 2012
- California, desert empire
reflashing ECM 2004 3.6 cts P0443
Ive replaced the purge valve ,canister vent valve , gas cap but the code comes on after cleared on next ignition cycle. Service manual says it should take 3 fails test before CEL on.
Im thinking bad ecm
Can the ecm need to be reflashed?
Hy-Per Lube - Oil Supplement
Oil Supplement - 32 Fl Oz.More on Hy-Per Lube - Oil SupplementPrice: 6.99 USD
Rain-X - Original Glass Water Repellent
Original Glass Water Repellent - 16 Oz.Price: 5.99 USD
Power Service Products Diesel Fuel Supplement +Cetane Boost - Diesel Fuel Treatment
Diesel Fuel Treatment - 1:400 Treatment Ratio; Treats Up To 100 Gallons; 32 Oz.Price: 9.99 USD