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    Idler pulley/tensioner question 1990 5.7 with AC

    1990 C1500 with 5.7 v8 and AC. I need to replace the idler pulley on the tensioner which should be a no brainer but having a part ID issue. Parts lookup calls for a GM 10129560 which crosses to Dorman 419-610. OK but those are smooth pulleys with no flange. The one on the truck has side guides...
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    Complete Exhaust System From the Head to the Bed 1990 C1500 Single cab Short bed

    Seeing a whole bunch of Header threads so I thought I would post one too. I am looking for a Complete Exhaust system. Short, Mid, or Long that comes with the pipes and mufflers. Side Exit, Single or true dual. DOnt care but I want to buy it all together in one shot that will fit. I dont need...
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    700r4 no 4th gear after warmup

    I just did a Transgo Reprogamming kit on my 700r4. The trans was in good shape and worked in all gears (no Lockup but that's another story) It was, however weak slow shifts. Fluid was clean and just a little gray goo on the magnet. I followed the instructions to a T, watched several videos ect...
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    Pillar mount gauges

    To anyone who has installed a 3 gauge Pillar mount. How did you secure it to the Pillar trim? This is a Universal Mount from GlowShift which by the way fits up to the A pillar very nicely. I could run a few screws through it or possibly use some type of adhesive. Any Suggestions would be...
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    Park Neutral switch 1990 with 700R4 Winters Sidewinder Shifter install.

    I am installing a Winters Sidewinder Floor shifter. It comes with a Park Neutral switch and a reverse light switch. I was looking under my dash for the P/N switch and it is missing and the wires/plugs are hanging. I looked at the wire diagram and it shows that the switch closes with in Park or...
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    Alignment Cam Bolts 1990 C1500 Drop Spindles

    I installed the McNaughtys 2 inch drop spindles and took the opportunity to replace everything in the front suspension and steering. Do I need the aftermarket cam bolts for the upper control arms? The factory bolts are in there now. Do I need the punch out tool or are the knock out plates...
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    McNaughty's 2-4 drop install notes

    The drop shackles are a no brain install unless you have a Reese Hitch. If you have a hitch the spring bolts wont come out and the hitch will need to be removed. The Front hangers are a ***** as those rivets just dont want to give up. The passenger side was easier as there is nothing in the way...
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    1990 C1500 Buying drop spindles and all new front brakes. What should I get?

    I have a 1990 C1500 short fleetside. In the process of lowering but it also needs front brakes. My truck DOES NOT have F44 HD front brakes. I see two different drop spindles listed. One for my truck and a different one for extended cab. Is the difference in the spindles just for the HD brakes ...
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    GVW C1500 and axle weight rating

    1990 C1500 Single cab short fleetside bed with a 5.7 and 700R4. There are no stickers on the door or glove box anymore. Trying to get an idea what the axle weight limits are. As far as I can tell from searching the GVW is 5700lbs and payload is 1700 which would put the curb weight around 4000...
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    700r4 VSS and speedometer

    1990 C1500 and my speedometer works intermittently or jumps. Seems to work more often when the truck is fully warmed up. I get a CEL code 24 when it doesn't work. That tells me that the issue is with the VSS or the connection from the VSS to the ECM. I replaced the VSS (Better know in the...
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    Rear from K1500 in C1500 axle questions

    I have a 1990 C1500 with a rear end that will sing you a song everytime you get on or off the gas. I found a 1990 K1500 Rear end with 3.73 gears which would be my prefered ratio. It has 6 lug axles and of course I have 5 lug axles. Can I just swap the axles and brake drums from my current rear...
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    C5 Corvette Rims

    I have a chance to pick up a set of rims from a C5 Corvette for my 1990 C1500. The rears will fit fine but the fronts are 17x8.5 with 6.5 inch backspace. The tires are 245/45-17. Will I need spacers to run these? Suspension is 100% stock now but plan to lower it later.
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    A Pillar Trim plastic question

    I have a 1990 Single cab. The plastic trim is EXTREAMLY brittle. I know in later models they used a different more rubberized plastic. Is the trim from a 97 any better or did the rubberized plastic come much later?
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    A/C questions 1990 C1500

    I just bought a 1990 C1500 with a 5.7. It is a Florida Truck so no rust but an operational A.C system is a must have and likely always has been. The current system is in tact but no freon. It looks to be all original. The compressor still has the r-12 Harrison sticker on it and the accumulator...
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