Question about 2003 GMC Sierra 1500
Last week the pressure fitting on the heater core failed. ....in traffic. It emptied the cooling system completely, and I had to drive about a half mile before traffic would allow me to merge to pull over in a shopping center to diagnose what happened. during this half mile drive, the temperature rose to over 260* indicated, and the engine went into a protect mode/power reduction. I was able to clamp the failed circuit of the the cooling sys. to get to the dealer and get the part, but once changed, and fixed, it will run fine, and then reduce power. anything above 1/2 throttle and you can feel it lose power- let the gas off real slow, and you will actually accelerate a bit. I also noted the tem will rise and fall abruptly on my gauge, so this is a kind of "red flag" to me.. I also replaced the thermostat today thinking the excessive heat may have affected the temp. range of the existing thermostat. reset the ecu, (left the batt disconnected while I changed the thermostat) And now the service engine light is off, but the power reduction is still evident at above 1/2 throttle position. I thought it might be the tps, but what are the odds that it would go out at the same time as the coolant fitting bursting?
I had this problem when the engine goes into protect mode you will have to reset with a scanner and reset the fuel air mixture cause it dont reset it self i hate these computer model car
Posted on Oct 27, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 24, 2013 | 2004 GMC Sierra 2500
Dec 31, 2010 | GMC Sierra 1500 Cars & Trucks
Sep 16, 2010 | 1993 GMC Sierra K1500
May 08, 2010 | 2008 GMC Sierra 1500
Apr 10, 2010 | 2000 GMC Sierra
Mar 23, 2010 | 1995 GMC Sierra C1500
Jan 07, 2010 | 2005 GMC Sierra
Jan 15, 2009 | 1999 Chevrolet Silverado 1500
384 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: