20 Most Recent 1989 Chevrolet Silverado 2500 Questions & Answers


possible crank/cam shaft position sensor
run the fault codes

1989 Chevrolet... | Answered on Jan 31, 2018


i really know anything about a powerbooster

1989 Chevrolet... | Answered on Nov 21, 2017


Slide in under the truck just behind the cab on the drivers side and look up INSIDE of the frame rail and you will see it.

1989 Chevrolet... | Answered on Jan 27, 2015


there is a daytime running light module located under the dash to the right of the steering column

1989 Chevrolet... | Answered on Jan 02, 2015


Check and clean the egr valve and passages beneath it.
Here is a listing of GM OBD1 codes:

1989 Chevrolet... | Answered on Nov 22, 2013


Start by checking the bulbs and the sockets and the wiring. look for discoloration and bare/ cracked wires. Fix or replace as necesary.

1989 Chevrolet... | Answered on Feb 01, 2013


Sounds like you have two problems, rough idle from an 89 would indicate mutliple problem possiblilities. Spark plugs, timing chain, injectors, coil pack, vacuum hose corrosion. Start there and if that doesnt solve the idle issue its time for a mechanic or a trade in.

For the no downshift, slow down lol. It could be an out of spec throttle cable. Check to make sure the cables are free and clear of debris and no kinks are present. The throttle linkage should move freely while the engine is off and again while running, be careful here.

Unfortunatly we may have to face the truth the old girl just doesnt have it in her anymore. Take it slow and easy, shes earned it.

1989 Chevrolet... | Answered on Dec 24, 2012

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