What should the low and high wire be on a Chevy Silverado?

What should the low and high wire be on a Chevy Silverado?

The low side should be above 28 to activate the low pressure switch and under 350 on the high side. Check the wire terminal 85 on the relay to make sure the wire is not broken.

Where are the a / C relay terminals on a Chevy Silverado?

If you test for 12 volts at the A/C relay terminals (engine compartment fuse block, left side fender) you should detect voltage at two of the four terminals which are marked (30) and (86). That’s power from the A/C fuse and Ignition fuse E, respectively. Now take a jumper wire and connect it between terminal (30) and terminal (87).

What is the voltage regulator on a Chevy?

The voltage regulator is built into the alternator on all Chevys made from the 1980s to at least 2010. Simply put, the regulator restricts the amount of voltage being sent to the battery. Without a regulator the battery would receive upwards of 30-volts of power while charging, which would quickly damage or destroy your battery.

Where is the ohm meter on a Chevy Silverado?

Check the continuity of the wire with an ohm meter (terminal 85 at the relay to the other end at the PCM terminal number 43 dark green and white tracer) on the C2 connector of the computer. With the relay installed half way, add a good ground wire to terminal 85 to see if it will engage the compressor clutch.

What are the specs of a 2002 GMC Sonoma?

All Sonomas for 2002 have air conditioning and a tachometer, and chrome grille trim has been added to the SLS trim package. The SLE trim level has been eliminated.

Is there a third door on a GMC Sonoma?

A third door is now standard on all extended-cab versions of GMCÂ’s compact Sonoma pickup truck, which is the corporate kin to the Chevrolet S-10. All Sonomas for 2002 have air conditioning and a tachometer, and chrome grille trim has been added to the SLS trim package. The SLE trim level has been eliminated.

How big is a Sonoma pick up truck?

Sonomas come in three sizes. The regular-cab model is 190.6 inches long on a 108.3-inch wheelbase, while extended-cab pickups ride a 122.9-inch wheelbase and measure 205.3 inches long overa… Show full review

How much does a GMC Sonoma crew cab weigh?

Payloads range from 1,111 pounds for the Crew Cab, which comes only with V-6 power and 4WD, to 1,389 pounds for a 4WD extended-cab model. Sonomas can haul trailers that weigh as much as 6,000 pounds, depending on the model. Regular-cab and extended-cab models may have either a front bench seat that holds three people or a pair of bucket seats.

Do you need a PCM for a Chevy Silverado?

If you don’t get clutch engagement from doing this then you may need a PCM. The PCM supplies the ground for the relay terminal 85 as I mentions above. If you can start the truck and turn on the A/C while you jump out the relay again (terminals 87 and 30) to activate the A/C compressor.

What causes a no start on a GMC Savana?

1996-1999 GMC Savana Van. All of the information you need to diagnose a misfire or a no-start problem (caused by the ignition coil, the ignition module, or the crankshaft position sensor). Wiring diagrams.

What kind of ignition system does a GMC pick up have?

This typical circuit diagram of the ignition coil, ignition control module, camshaft and crankshaft position sensors applies to the 1996, 1997, 1998, 1999 Chevrolet/GMC 1500, 2500, and 3500 Pick Ups equipped with a 4.3L V6, or a 5.0L v8, or a 5.8L V8 engine. NOTE: Testing the ignition system is a breeze.