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Re: What type of engine and year
The easiets way to find this is in the tagthe white tag under the engine has the yr an engine size unfortunatelly you are not telling me if you have a v-8 motor or a v-6 this trucks come with 6 or 8 cylinders also if your mechanic does not not what engine size is in it ask to any shop to run the vin number with a snapon scan tool and the tool will automatic give you the engine size
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I would start with the basics, plugs wires, cap and rotor button. Is you check engine light on or flashing? Your truck would be OBD1 so there should be an oblong plug under the dash. It will have 2 rows of connectors and 2 of them will be marked A and B. Use a jumper wire between these, A and B. Your check engine light will flash a series of codes in long and short flashs. A long one is 10 and a short one is 1. It will flash ech code 3 times and start and end with 12, so you will get 12,12,12,?,?,?,12,12,12. This may help to get you pointed in the proper direction. When you have them, let me know or type in "GM OBD1 trouble codes" into your computer. There are dozens of free sites to give you a read out. Hope this helps.
time that engine with a timing light connected to the #1 spark plug wire, using the mark on the front harmonic balancer and the scale on the timing cover. You can get a good "ballpark" timing by putting the engine up against the brake (if automatic) ...Run the engine in drive, holding your foot on the brake firmly and keep applying gas. Keep adding timing by turning the distributor till the engine detonates...then, turn the distributor back about 1/4" and lock it down. If after driving for a while, re-starting is "rumpy" or balky, back the distributor off a bit more. If stick-shift, put a vacuum gauge on it and advance to the highest vacuum reading and then back off as in the above instructions. With regards to the wire in your question, I have no clue what you are talking about but what I said will work! good luck
Short shoe goes towards front. Also: check for any contamination on shoes or hardware from either axle seal or wheel cyls. Any contamination will make vehicle pull when brake applied. Technically, if contaminated shoes need replacement but if not heavy, on new shoes I usually just give a light sanding on friction material and the remainder will usually burn off.