1993 Chevrolet C1500 Silverado 5.7 from North America


Best truck in its class!!


I have replaced the wiper motor, one wiper arm and brake lines.

Other than that, just general maintenance things.

General Comments:

I love this truck. It is extremely dependable, we use it to haul everything imaginable, we take long trips in it, and it has never let us down. The motor is still incredibly strong for its age.

My husband says it's time for a new one, and it will for sure be another Silverado.

Would you buy another car from this manufacturer? Yes

Review Date: 4th March, 2012

1993 Chevrolet C1500 5.7 from North America


The truck is very rugged, reliable, and roomy


General maintenance items, and a few other items like changing the starter when I first bought it. I changed the intake gaskets at 275000. I changed the oil pump for wear.

General Comments:

I would like to say that this is the best vehicle I have ever owned. It has never let me down, and I have only done general maintenance on it. I only wish that Chevy would make vehicles like this again.

Would you buy another car from this manufacturer? Yes

Review Date: 12th November, 2011

1993 Chevrolet C1500 W/T 4.3 V6 from North America


The hardest working V6 on the planet


Replaced motor mounts at 140,000.

Fuel pump at 160,000.

Clutch at 180,000.

Brake lines at 185,000.

Belt tensioner pulley at 213,000.

Other than regular maintenance (tires, brakes, etc), it has been very reliable.

General Comments:

It has been a great work truck! I pull about 4,000 of mowers, and the V6 still gets it done. Regular driving it shows 18 mpg, and towing I get about 13.

Rust has started to emerge, but it still looks good.

At 215,000 miles, it does use about a quart of oil between changes, but as hard as it has worked, I can't complain.

Would you buy another car from this manufacturer? Yes

Review Date: 20th September, 2011

1993 Chevrolet C1500 Extended Cab 5.0L from North America


Tough old dog


Alternator after I first bought it.

A/C compressor last week.

Starter Bendix crapped out, buying one today.

Ball joints also getting replaced this afternoon.

Heater core replaced in December.

Dashboard replaced due to cracking.

The engine was rebuilt by one of my techs. He didn't finish it and decided to move away, so I purchased the truck and finished installing the engine. The engine runs fine, but tends to want to die at red lights, so I have to hold the gas and the brake (not fun). He put a mild cam in with a .050 lift duration. I don't know if this is tripping up the computer, but the truck seems to run very rich. I welcome any ideas on this.

General Comments:

Other than the minor problems listed, the truck's been great. smooth riding and comfortable. A little tough on fuel, but that's probably due to my rich problem.

I changed out the flat grille for the late 90's style, updated to power mirrors, and had a liner sprayed in.

My truck is a step side, lots of people try to trade beds with me, as mine has no cracks on the sides and no dents in the bed area. I call the old dog c-change, basically because after I change everything out, I'll have a new truck! ;-)

Would you buy another car from this manufacturer? Yes

Review Date: 15th March, 2011

3rd Jul 2012, 16:01


Yeah that cam is likely your problem. If all other aspects of driveability are OK, you can likely fix this easily. Check to see if your TPS is set at 0.5V for starters, and if not, set it there. We are assuming that the "minimum air" setting was at least close before the overhaul. Leave the idle screw alone for now. Put the engine in diagnostic mode with the key on, engine off (this will close the IAC). Unplug the IAC and leave unplugged, start the engine (I assume it will not idle). Remove the throttle body and drill 1 small hole in each butterfly on the lower half in the same place on each butterfly, starting with 1/32". After you drill it enough to idle, take note of the RPM increases after each drilling. When you get close to 500RPM, try not to go too far over/or under. You can use the "idle" screw to tweak it after the drill gets as close as possible, then re-set the TPS voltage. Make sure you remove the throttle body every time and clear out all the metal shavings to protect your engine. Remove the diagnostic adapter from the ALDL, plug in the IAC, and you should be up and idling.

IF you have a scan tool, this is much easier. Check the IAC position; it will likely be all the way open. If so, do the throttle body drilling like before. When the IAC gets close to "centering" itself stepwise, you can use the "idle" screw to tweak it to the centered position. Then reset the TPS and you are good to go.

Key: Set the TPS first. Everything is based on this, as after you modify the butterflies, the engine only needs to idle correctly, and see the idle starting point at the correct TPS voltage.

Hopefully it has not been tampered with. If so, or if you suspect it, you will need to put the throttle body on a completely stock engine of same make, year and displacement to get it right. Then put it on your vehicle and do the above.

It's hard to un-drill those holes once you drill them, unless you have a spare throttle body. Only other option is to replace the camshaft.

24th Jul 2012, 17:35


Original poster here.

Thank you very much for your input. I had spoke with one of the techs at the Chevy store (I work for Hyundai). He had given me almost exactly the same procedure that you described. I performed it, and my idle problem has been corrected. Also my fuel consumption has increased slightly since the problem was corrected.

I had to have the tranny rebuilt in December, and replaced pretty much the rest of the front suspension and steering system. but with over 210,000 miles, I didn't have too many complaints.

Cosmetic wise, had it resprayed midnight blue with gunmetal belly, found a set of the Chevy chrome "deep dish" rims, and updated my interior to the console and buckets from a '96 model.

It's been my daily driver, and just got back from a vacation with the wife. We drove from Louisiana down to Sarasota Florida (home town); never had a single problem. My wife's got a 2012 Elantra, but she's already over her mileage average for her lease, so we didn't take her car.

I had no reservations at all about taking the truck. He did just fine, and with the cruise set and the A/C on, was much more comfortable than the wife's car.

Thanks again for the advice, it was very much appreciated!

26th Sep 2014, 03:29

Your problem is the cam. When he changed it and put in a bigger one, the truck's computer is still reading as if it has the factory cam. I hope this info helps.