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96 Chevy Tahoe door lock problem
While I vigorously recommend owners wanting to work on their own vehicles should purchase the FACTORY WORKSHOP MANUALS
... for one time little jobs there are a FEW
good alternatives... that ae also FREE.
maintains an very excellent technical database
for popular USA
TECHNICAL SERVICE BULLETINS
and Circuit wiring diagrams
registration is required...
these are real
A fuse would seem to be indicated ...
control is sound a relay operation... but the
REAR-HATCH is not cooperating... THAT WOULD
be the place to start,
Hope this helps...
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on May 27, 2017
My 2004 chevy 1500 v8
If the compressor kick's in when you jumper the relay socket there is no problem with the electrical to the compressor an the compressor isn't locked up . You have a control side problem , the PCM - engine computer is suppose to energize the relay if no other problems are present . The proper way to check this would be to hook up a scan tool an check pressure input's to the PCM an is the PCM getting a request from the HVAC control panel to turn on the A/C compressor .
AutoZone is wrong as usual , There can be codes without the check engine light being on . o'reilly's is wrong as well
DTC P0530 (LU3, LR4, LM7, LQ4 and L18)
The powertrain control module (PCM) or engine control module (ECM) monitors the high side refrigerant pressure via a A/C refrigerant pressure sensor. When the pressure is high the signal voltage is high. When the pressure is low the signal voltage is low. When pressure is too high the PCM will not allow the A/C compressor clutch to engage.
Action Taken When the DTC Sets
The malfunction indicator lamp (MIL) will not illuminate.
The air conditioning (A/C) compressor clutch will not engage under the following conditions:
• The A/C high side line pressure is over 2957 kPa (429 psi).
• The A/C low side line pressure is under 138-172 kPa (20-25 psi).
• Throttle angle is at 100 percent.
• Engine speed is more than 5500 RPM.
• Engine coolant temperature (ECT) is more than 121°C (250°F).
• Ambient air temperature is less than 5°C (40°F).
• Engine is idling at a low unstable RPM
Compressor clutch engagement cannot be used to determine status of the low pressure switch. The low pressure switch is one of several inputs to the HVAC control module for A/C request authorization. A/C request is one of several inputs to the powertrain control module (PCM) that control A/C compressor clutch engagement.
To accurately determine what pressure the A/C low pressure switch opens and closes at use Kent Moore GE-47742 which will allow the technician to measure the switch point pressure at the switch.
Using a scan tool, monitor the "low pressure switch" status while monitoring the "low side" pressure at the switch to determine the switch points of the low pressure switch.
The low pressure switch "connector seal" must be removed before plugging it into the switch for testing. The "plunger effect" of plugging the connector with seal into the switch induces a pressure on the back side of the switch, this pressure will skew the opening/closing characteristics of the switch 5-10 psi until the pressure bleeds off. The time required for the connection induced pressure to bleed off can take 20 minutes or longer
Do you have the proper diagnostic tools ? Factory scan tool , A/C gauges ? You best bet , take your vehicle to a qualified repair shop !!
on Apr 11, 2017
96 tahoe keeps blowin the dash ,parking and courtesy door lights fuse
That;s fuse #4 check brake switch to ignition do you have curse control that will also come into play .
What you really need are the factory manuals and a meter or test light to track this down .
A company called HELM .COM prints most factory manuals for most vehicles .50 to 100 dollars you need them to fix especially a 96 Chevy that's the first year OBD 2 they tend to have design problems and are hard to work on .
on Nov 23, 2016
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