i scanned the 1999 gmc suburban 4x4 5.7l i have this code show 025 heater ckt malfunction 1/2 and also 028 ckt low volts 1 and 2 ??? i dont know these code can someone help me thanks ....
2007-07-28 12:36:11 · 4 answers · asked by cary s 2 in Cars & Transportation ➔ Car Makes ➔ GMC
try calling a gm dealer and talk to someone in the service department.They should be able to decipher the codes over the phone. If they tell you that you have to bring the vehicle in to the shop to analyze the codes hang up and try contacting a TRUSTED REPAIR SHOP.
2007-07-28 12:56:42 · answer #1 · answered by hjbergel 5 · 0⤊ 0⤋
Sounds like the codes are for the same oxygen sensor. The only way to fix the first one is to replace the sensor. I believe what you have written should be bank 1 sensor 2. What this means is the sensor that you need to replace is the second oxygen sensor in the driver's side exhaust system after the convertor. Be sure to replace the proper one as there are four sensors under there. The best thing to do is physically follow the pipes back from the left exhaust manifold and where the pipe comes out of the cat convertor, that is the one to replace and then recheck. Good luck.
2007-07-30 07:41:06 · answer #2 · answered by Deano 7 · 0⤊ 0⤋
they sound like codes for an oxygen sensor. not sure with out the whole number or anything. autozone will scan cars and they can put the code in their computer and tell you what it is most likely for.
2007-07-28 16:25:19 · answer #3 · answered by flanders20 3 · 0⤊ 0⤋
go to a garage and let them check it for you
2007-07-29 09:37:52 · answer #4 · answered by Mohamad k 2 · 0⤊ 0⤋