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  1. J

    What should I get?

    Hello everyone- I am looking to get a 90’s extended cab to use as my daily driver; I will be towing a 20’ ski boat, as well as the occasional utility/uhaul trailer. What year/engine/transmission combo should I look for? What should I stay away from? Thanks in advance.
  2. J

    1988 GMC Sierra C1500 SLE RCLB

    Here is my finished rig. 100,169 miles. 350 5.7L V8. Automatic transmission, PS, PW, PL, cruise control. New or replaced items- Paint job, headliner, carpet, reupholstered seat, Sun visors, fuel tank, suspension including springs, upper and lower control arms, ball joints, pitman arm...
  3. J

    Gear box shaft seal help!

    Help please! Working on my 88 GMC c1500- So I started a pitman arm shaft seal replacement with the gear box still mounted; and as they say, Murphy’s law kicked in! I took the 4 bolts out of the top and lifted the sector shaft completely out of the gear box. That gave me good access to the...
  4. J

    Fan clutch replacement- orig part number

    88 C1500 5.7- I’m changing the original water pump because it is leaking from weep hole. While I’m there, I’m am going to also change the thermostat, radiator hoses, coolant. It was recommended to change the fan clutch since it is original; Is that good advice? I am trying to cross reference...
  5. J

    Water Pump Advice

    Looking for water pump advice. 88 GMC c1500- I’m replacing the original water pump. Seems like opinions on replacing with OEM(AC Delco) vs cheaper brand are mixed. Decided to go with new $160 AC Delco from Oreillys. I received it today and it’s definitely not perfect from a looks...
  6. J

    Cowl or factory hood?? Can’t decide

    Repainting roof and hood- should I stay factory hood or go 2” cowl? If cowl, 2 tone or solid color? Going back and forth, so Thanks for feedback!!
  7. J

    88 C1500 factory stereo upgrade

    Looking to get a better sound system in my 88 C1500; Is the factory stereo good enough or powerful enough to run higher quality speakers, or do also I need a new head unit? If I need a new head unit, looking at the Santa Cruz model. Looking for reviews of this stereo, as well as suggestions or...
  8. J

    Body style changes

    This may not be the right section, but I am curious as to what year the body style changed on the mid to late 90’s 1500 extended cabs. Specifically looking for the years that this style was made- Thanks!
  9. J

    HELP- Fuel Pump

    I have an 88 GMC 1500 RCLB. Put new Delphi pump in 2 mos ago, along with a bunch more restoration items. Just put new alternator in; Truck was running great; I had about 1/4 tank of gas, and just filled it up. It sat for a few days without being driven, and I am in N Texas with temps over 100...
  10. J

    Transmission Yoke leak- 88 GMC 1500

    Newbie here- have atf leak from what appears to be the yoke at front ujoint. See pics. From what I have read, the yoke has a permanent seal in the center that can leak. Con someone experienced with this confirm that is what the leak appears to be? If so, Is the repair as straight forward as...
  11. J

    AC hose help for 88 GMC 1500

    I have the original R12 system and tried to convert to 134 by just installing the conversion Schrader valves, replacing the dryer and orifice tube, and putting 134 Freon in. It worked, but I have a leak at the hose connection at the back of the compressor, as well as at the high pressure...
  12. J

    What plug is this? 1988 C1500 Sierra 2wd

    I am trying to fix a washer pump that is not working; The pump wire, as well as some other wires, lead into this harness that is pictured. When I pulled off the cover to see what kind of connection the wires had, the inside was all melted and had this gooey tarlike substance everywhere. I...
  13. J

    Oil pressure moonie gauge not working after changing lights to LED- Help

    I have a 1988 GMC C1500 with the original moonie gauges. I took out the cluster to fix the shift indicator, and I went ahead and changed the lights to LED while I had it out. All of the gauges are working correctly except the Oil Pressure gauge. All of the gauges were working before I pulled...
  14. J

    Truck Value- 88 GMC c1500 2wd

    I know that the value of a truck is whatever someone is willing to pay, but I wanted to get some opinions on the value of my truck. Doing a slow restore, so just curious of other’s opinions. Truck is in good condition; about to put wheels and tires; Original restore paint job is potentially in...
  15. J

    AC help- R12 to 134A

    Hello everyone! I have an 88 GMC C-1500 that I am fixing up after it sat for 20 years. Can anyone shed some light on what I need to do to get my AC working? It is not blowing cold, and I still have the stock R-12 system. I have been told several ways to convert it from R-12 to 134A; 1 person...
  16. J

    HELP!! 88 GMC C1500 rclb 2wd coil spring replacement

    I am stuck and waiving the white flag for help.....I am installing a RC 2" front lift kit on my 88 GMC 1500 2wd which consists of new coil springs and a ball joint spacer. I replaced the upper control arm assy and installed the ball joint spacer. I am trying to put the new springs in and I am...
  17. J

    Ideas needed for 1988 GMC C1500 longbed restore

    Hello- new to forum. Just bought 88 C1500 that has been sitting up untouched in a garage for 18 years. It started up when I poured a bit of gas in Carb. Body is in good condition with no rust. Good and roof has some paint fading/oxidation. I am going to change...

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