1999 GMC Yukon "wiring check engine" Questions

Check your main wiring harness, This seems to be a pretty common problem with this vehicle. The main wiring harness is located in the engine compartment near the battery. Check the wires out very well

Check engine light continues to come on. Scanned and got Bad Bank 1 Code. Changed All four O2 Sensors. What else could it be? Right check the O2 sensors for working by checking the wires with a multu ...

...check engine light" on, but when you get your timing set and reconnect the wires it will turn off. Then use the timing light and check your timing with the use of the timing light and the markings on ...

...in the connector to the throttle connector and also check the wiring there. the wires there are usually the cause of reduced engine power. Could be your catalatic convertor or a plugged fuel ...

...smook Probably engine is misfiring. Check spark plugs and wires. Check distributor cap and rotor. Check spark at plugs. Should be a blue spark and not yellow. A yellow spark is weak ignition

wiring isn't grounded somewhere. If the Crankshaft Position Sensor is bad or skipping a little the engine will crank but not start. It is located on front of engine behind fan. Haynes Manual (#24065?)

Any applicable trouble codes? If more than one issue, have to check rpm signal. If only fuel issue, check voltage and ground for the fuel pump motor, 5.3l engine, gray wire is voltage, black is ground

...check? If there is a problem with the engine the black box in the car is telling the engine to run at a safe setting to prevent damaging the engine. This allows you to limp into a repair station to ...

...for power check for burns or breaks in wires replace fan if bad your fan only comes on when your engine reachs a certain temp then it shuts itself off when temp drops check fan relay and temp ...

...engine usesa variety of rubber belts to run, including timing belts and transmissionbelts. During a tune up, a mechanic will check them for cracks or general wearand tear to determine whether or not ...