Question about GMC Cars & Trucks
Truck is showing a limp mode code
Posted by Anonymous on
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Posted on Jan 02, 2017
try getting a new shift solenoid for it. i had the same problem on my 2002 chrysler town and country and my plymouth breeze which is also a dodge product. it is very simple to do and doesnt take all that long. the part will probably run you about 150 to 200 dollars but it should fix your problem.
Posted on Apr 04, 2009
SOURCE: limp home mode
You need to scan for engine trouble codes. Most parts stores will do this for free, and tell you what they mean and make recommendations on what to do. The 'limp mode' kicks in to prevent damage to the vehicle when the computer gets data that something is wrong.. When you shut it off, it's temporarily reset, but then the cars computer is signaling there is still a problem, and it goes back into limp mode. If you have any questions after getting the codes 'read' , post questions and code #;s here for help. Good luck.
Posted on Apr 28, 2009
The switch or the wire harness at the blower motor has gone bad. The highest setting 5 has no resistor, so the blower runs on high but the high current flow ends up burning up the switch's contact on that setting or the resistor wire harness at the blower motor has gone bad. Common would be the switch it self, if the switch is good. Then it's going to be the wire leads at the speed resistor by the blower motor under the glove box by the passenger leg compartment. Keep me posted, be glad to help you get your Sierra running 100% again soon.
Posted on Jan 06, 2010
Hello! #1; The injection pump inlet hose has been known to kink which will cause this fault...The line is foam covered...#2; Have you changed the Fuel Rail Pressure Regulator?
If so, the connector and its wiring may be open or resistive...The wiring is as follows...Purple White from regulator to ECM pin #42...Yellow from regulator to ECM pin #77...Check with an ohm meter set on X1 scale...Most important is the condition of the FRPR connector...Radio shack has a product called DOXIT...It cleans contacts by merely
spraying...No-touch cleaning...Excellent product...$14.95...Two spray cans (small) one cleans the other protects...Not much is necessary...Also clean the connector for the Fuel Pressure Sensor...Wiring; Tan...Orange/Black...And Yellow,,,
Send a comment with results...Guru...Saailer
Posted on May 13, 2010
SOURCE: 2003 GMC Sierra 5.3L (has
CODE PO120 - TP SENSOR 1 SIGNAL RANGE PERFORMANCE. CODE P1516 - TAC MODULE THROTTLE ACTUATOR POSITION PERFORMANCE. CODE P2135 - THROTTLE POSITION SENSOR 1 - 2 CORRELATION ERROR. THIS IS A DEALERSHIP FIX YOU HAVE PROBLEMS OR FAULTS IN THE THROTTLE POSITION SENSOR.
Posted on Oct 24, 2010
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