SOURCE: 1999 GMC Sierra 5.3L knocking sound around Catalytic Conerters? ?
on my gmc i have 2 knock sensors and im not possitive if you have two or not under your intake mani but when i replaced both mine i got the same code of low input so i took the small needle out and wire brushed it clean and also traced and ran a new wire just to be safe and that solved my problem. as for bank 1,2 if it helps any my bank one is located engine side driverside and bank2 is engine side passenger side and 3 and 4 are underneath bed side. but you can see the sensors if you look real close near the headers. hope this helps
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SOURCE: 2000 gmc sierra 1500 5.3 v8. a/c heater control problem
your heat/cool and vent selection options are controlled by engine vacuum through small clear tubes attached to the rear of your climate control interface. Other vehicles have small steel pull wires that operate the desired changes. You might try removing the trim and any fasteners affiliated with the interface/console. GENTLY pull outward and look to see if any of these tubes are pulled off or cut/damaged. Did anyone recently install a new stereo in the vehicle? If so, the vacuum tubing and or pull wires that change your outlets could have been damaged when the stereo unit was pushed into place. Hope this helps
Testimonial: "Very good information. THANKS!"
SOURCE: LOW OIL PRESSURE ON 2007 GMC SIERRA 1500. CHANGED
have it tested using a manual gage if still low then main baring ore most likely bad that would mean a over hall if is really low and bearings bad should be making rattle noise when started up first few seconds
Testimonial: "thanks alot.truck is not making a rattling noise.we did check it with a manual gauge.it read about 10 at idol. press. gets better as you incr speed"
SOURCE: how to pullout starter on 2000 gmc sierra 4 by 4
4.3L Engine
To install:
Negative battery cable
Bracket and shield
Wires
Mounting bolts and shims
Starter
Starter
Mounting bolts and shim. Torque the bolts to 33 ft lbs. (45 Nm).
Wires. Torque battery wire nut to 89 inch lbs. (10 Nm) and
ignition nut to 18 inch lbs. (2 Nm).
Bracket and shield. Torque the nuts to 53 inch lbs. (6 Nm).
Negative battery cable
Fig. Exploded view of the starter motor-4.3L engines.
To install:
Negative battery cable
Bracket and shield
Wires
Mounting bolts and shims
Starter
Install or connect the following:
Starter
Mounting bolts and shim. Torque the bolts to 33 ft lbs. (45 Nm).
Wires. Torque battery wire nut to 89 inch lbs. (10 Nm) and
ignition nut to 18 inch lbs. (2 Nm).
Bracket and shield. Torque the nuts to 53 inch lbs. (6 Nm).
Negative battery cable
Fig. Exploded view of the starter motor-4.3L engines.
Hope help with this (remember rated and comment this).
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