1991 Gmc Yukon Xl 2500 P1491 Fault Code Check

When you check 1991 Gmc Yukon Xl 2500 car engine light came on code P1491 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Gmc manufacturer may have a different definition for the P1491 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

To solve P1491 1991 1991 Gmc Yukon Xl 2500 problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

1991 Gmc Yukon Xl 2500 P1491 OBD-II Diagnostic Powertrain (P) Trouble Code Description 1991 Gmc Yukon Xl 2500 car P1491 OBD-II Trouble Code Secondary Switch Solenoid Circuit Malfunction is one of the definitions for the P1491; however your vehicles manufacturer may have a different definition for the P1491 code. Please check below for you Reason For 1991 Gmc Yukon Xl 2500 P1491 Code The reason of 1991 Gmc Yukon Xl 2500 P1491 OBD-II Fault Code Check is P1491 Secondary Switch Solenoid Circuit Malfunction.

1991 Gmc Yukon Xl 2500 P1491 Possibble Fix Ways :

The most likely cause of this is that there is no refrigerant left in your system. This could be caused by a leak in your system somewhere, which will have to be fixed before refilling the refrigerant. If you're car-savvy and you own a set of air conditioning gauges, refilling the refrigerant is usually easy to do yourself. However, if you're not so confident, enlist the help of a knowledgeable friend or take a quick trip to the mechanic.

When you turn on the ignition, the Service Engine Soon or Check Engine P1491 1991 1991 Gmc Yukon Xl 2500 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If P1491 1991 1991 Gmc Yukon Xl 2500 so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the P1491!

What does fault code P1491 mean for 1991 Gmc Yukon Xl 2500 ? What does a diagnostic reading P1491 mean for 1991 Gmc Yukon Xl 2500 ? How to fix OBD2 Code P1491 for 1991 Gmc Yukon Xl 2500 ? What do we know about P1491 code for 1991 Gmc Yukon Xl 2500 ?