20 Most Recent 1998 GMC Sierra - Page 4 Questions & Answers

Unplug one battery cable. Locate old air bag sensor near radiator support, which has the easy to locate yellow connector. Unhook yellow connector, remove bolt, then remove. Reverse order to reinstall, but don't forget to reattach batter cable.

When you had the wiring loose for multifunction switch, if possible, knowing what color wire did what, using wiring diagram, I believe you could have used jumper wire to bypass multifunction switch to see if this or that system would work, if it doesn't, the multifunction switch probably wasn't the problem. On older vehicles it was probably easier to do something like that. Could be issue with wiring in steering column or clock spring, where applicable.Your low beam from dimmer switch goes through drl relay, with relay not energized. At the low beam head lamp, tan wire is voltage, black wire is ground.

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mostly when this happens the small plastic clip that holds the pull wire to the latch in position is broken and allows the wire to fall out. You will have to remove the door trim to get inside the door Mostly the clip is available from spare parts departments.

A Chiltons/Haynes repair manual that covers your truck will take you step by step through the procedure.

Engine cranks (Turns over) & will NOT start ?? Engine will not crank (Turn over) ?? If you need further help, reach me via phone at https://www.6ya.com/expert/ralph_2f0886b7d6af32ce

check for a leaking manifold gasket or cracked manifold. If it is a front wheel drive car there may be a flexible bit near the engine to allow the engine to move in the mounts . This bit of flexible exhaust is known to crack under the brading.

MAP sensor is Manifold Absolute Pressure. It's the diff?rence between intake pressure and air pressure It's tell the PCM power control module the load on engine hope it helps

push the set button and then set the time with seek an scan button

Check for fuel by pouring small amount of clean gas down throttle body and crank engine over. if it starts and runs just for a few seconds you have a fuel delivery problem. If it still does not run after several attempts check for spark at spark plugs. that should get diagnosis started

see below Glenn.

Check over the exposed shift linkage If that doesn't have an issue,remove the trans pan & watch the linkage inside, for the parking detent rod & linkage

every thing you did is about supplying power to the starter and nothing about checking the ground circuit. check the ground circuit as you may find the problem there.

slite posibility of head gasket leaking a little or could be a worn piston ring you have changed every thing else

You might try an oil pressure sending unit, first making sure the connector and harness are okay. I'm not sure, but I think there is a VSS Sensor as well, or vehicle speed sensor. Check the connector and wiring. If its okay, try a sensor. Good luck, hope this helps.