2000 GMC 3500 Pickup Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2000 GMC 3500 Pickup

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2000 GMC 3500 Pickup Problems

Check Engine Light Due to Gas Cap Issue

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

Replace spark plugs every 100,000 miles

The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.

Check Engine Light With Code P1870

Vehicles equipped whit a 4 speed automatic transmission may develop a harsh 1-2 shift and/or illumination of the Check Engine Light with code P1870 stored. This can be caused by wear of the bore for the TCC isolator and regulator valves in the valve body. This condition does not commonly occur until the transmission reaches normal operating temperature. If the valve body is worn, replacement will be necessary to correct this concern.

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2000 GMC 3500 Pickup Questions

what causes the 4 wheel drive actuator to not engage the differential? (1 answer)

I put in an actuator that I know is good, that one does not extend either, the transfer case shifts into 4 wheel drive and will spin the front drive shaft but the differential will not lock in. I am curious if there is a common wiring issue or if someone knows how much power should be at the fron...

First, my truck is not a "Pickup", it is a GMC 3500 HD Commercial Box Truck. (1 answer)

My truck (as listed above), would not start, even though it had power. Check Starter, relays, and fuses. Replaced Starter, still the same, checked fuses again, no fuse listed 'Starter" but found one listed "Crank", it was blown, I replaced it (10 amp), truck started as usual, ...

l/s headlamp not working. replaced w/ new one,still not working. (2 answers)

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