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1991 GMC Syclone a 90's veteran for a 70's USN Veteran.
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Why is the gear ratio missing from the window sticker? The 4.3 should be the V6 for this truck.
- 14 replies
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- live review
- 2015
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2014+ AFM (Active Fuel Management)
SY2455 replied to Ron.s's topic in 2014-2019 Engine, Driveline, & Exhaust
I don't know if it will help you as I order my truck with the SEY 22" wheels, When I picked up the truck the tires were inflated to 37 psig cold and only heat up to 39 psig after driving. Back here in Ohio I'm getting 20 mpg city with 93oct with my 6.2 engine and 3.42 gears. -
2014+ Gas Mileage (MPG) Topic
SY2455 replied to BringTheRain403's topic in 2014-2019 Engine, Driveline, & Exhaust
2014 CCSB 6.2 LTZ with 3.42, most of the time was spent at 70-75mph on cruise control. -
2014+ Gas Mileage (MPG) Topic
SY2455 replied to BringTheRain403's topic in 2014-2019 Engine, Driveline, & Exhaust
I haven't posted in awhile because we are moving. Here is a update on the mileage while towing a 7500lb loaded trailer 2400 miles. During this trip we went up hills and down hills, we even did some flat land driving. The towing was done in the tow-haul mode on the transmission. We got a low gas mileage of 9.5mpg, a high of 19.5mpg and a complete trip mileage of 13.5 mpg. A friend of mine with a Ford F-350 diesel told me that I get better mileage then he does with a lighter trailer. -
Did you use the front spring hangers to get the most lift and lower the spare tire?
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I would try the front spring hangers to get the most lift.
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The answer is no. You must jack up the truck and use jackstands or cut the stock system. Unless you have a lift that you can use.
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6.2 Exhaust, What do you have?
SY2455 replied to SY2455's topic in 2014-2019 Engine, Driveline, & Exhaust
Does anyone know if it is a typo error on the Borla outlet pipe size? It says dual 2 1/4" outlet which sounds small for the 6.2L engine, My Syclone came with Dual 2 1/2" outlets and it's a 4.3 engine with a turbo. -
6.2 Exhaust, What do you have?
SY2455 replied to SY2455's topic in 2014-2019 Engine, Driveline, & Exhaust
You don't make the cut on the Borla system. The cut that is made is on the factory pipe leaving the 3rd Cat before the stock muffler. -
6.2 Exhaust, What do you have?
SY2455 replied to SY2455's topic in 2014-2019 Engine, Driveline, & Exhaust
You may be able to still use the Borla exhaust by cutting the exhaust pipe a little back from where the normal cut is made. If you know someone with a short bed truck near you to compare side by side. I would look into it. -
Stock control arms: Steel or aluminum?
SY2455 replied to pancepance's topic in 2014 - 2019 Silverado & Sierra
Well I think that post #48 has it right. Mine is a 6.2 CCSB LTZ 2wd Z60 high performance suspension with the steel control arms. -
Well, just my thought on this console shifter thing being that I own 2 GM trucks. 1 with a console shifter and 1 without. In a performance type truck, the console shifter has it place and that is why GMC put one in the GMC Syclone. In the Syclone the shifter just looks right. In the 2014 not so much even if your truck has the bucket seats with console as mine has. The area that the console covers is on the large size side and to add a shifter there and make it look right would be a lot of work. Most likely it would have to be one of those Ed Big Daddy Roth Shifters just to look right in these trucks. A friend of our has a Ford truck with the console shifter and that is the 1 thing that she hates about it. I really like the carpet looking wheel wells and so far it has been really easy to clean them with just the hose.
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6.2 Exhaust, What do you have?
SY2455 replied to SY2455's topic in 2014-2019 Engine, Driveline, & Exhaust
If you look at the install sheet it said that the tubing is 3.5", only the tip is 4". Better look at that again. -
Slot above the headlight switch ??
SY2455 replied to Yotaman's topic in 2014 - 2019 Silverado & Sierra
I heard that "The slot is going to be for using your bank card to transfer money between your different bank accounts in the 2015 Model Year". -
2014+ Gas Mileage (MPG) Topic
SY2455 replied to BringTheRain403's topic in 2014-2019 Engine, Driveline, & Exhaust
Ok, we returned from the trip that we went on. The raw data after filling up for the above pictures 380 miles total before starting trip. The truck took 19.5 gallons and mpg worked out to 19.48 mpg on the 1st tank. Here are some pictures of the trip that had about 250 miles of mountain driving and flat land driving the rest of the way for a total of 1154 miles. So it works out this way. 1154 - 380 = 774 miles for the trip. On the trip we burned 37.5 gallons of gas for a gas mileage of 20.64 overall. The best of it. The part that has the most wow took place on the flat land. It was a reduce speed zone that went forever. The posted limit was 55mph and I set the cruise at 57mph. The CHP had people pull over on both sides of the freeway. In case you can't read it because the road was rough. The current mpg on the left said 28mpg. The best at 50 miles was 25.7 mpg and the avg. was 25.7 mpg For the best 25 mile club went to this picture. Cruise set at 70mph. That was on flat land driving near Delano, CA on Interstate 99 going to Bakerfield, CA.
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