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Prev Professional Automotive Repair Technical Discussions for July 1, 2013
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Open Help Requests for GM
Help Request Answers
1995 Chevrolet C3500 6.5L No Start VIN: 1GBKC334F1
Good day everybody, I have this 95 6.5 diesel (vin F) that came in running with code 35, internal error in the injector pump,and 57v PCM shorted. so I put a new pump on it and now I have a no-start. I scan it and get codes 14,31,42,62,58 and 57. I can clear th... Trouble codes: 14 (coolant low or shorted), 31 (map input low), 42 (fuel temp low - high), 62 (boost sensor low), 58 (trans temp high), 57 (5V PCM shorted)
2002 Chevrolet Impala LS 3.8L MIL Lamp on VIN: 2G1WH55K12
hello all Iget these codes relating to the 5 volt ref for the PCM.I have checked for the 5v on each of the sensors,fuel tank pressure sensor,A/C high side pressure sensor,EGR valve ,TPS,and MAP sensor all good.If I disconnect one at a time and start car both t... Trouble codes: P1635, P1639
2007 Chevrolet Silverado 2500 HD LT 6.0L ABS module VIN: 1GCHC24K87
This vehicle has the amber ABS light and the red parking brake light illuminated on the instrument panel. I hooked up our Snap-on Solus Pro with the latest updates installed. When trying to access the ABS data it displays a communication error. The scanner com...
1992 Geo Tracker 1.6L No Start VIN: 2CNBE18U2N
The car will not start. ECU will not flash code 12 when self diagnostic terminals are jumped. Fuel pump relay chatters when ignition is turned on. The two wires that power the ECU (A1 and A7) both have battery voltage, key on and cranking. The Alldata flow cha...
2003 GMC Yukon Denali 6.0L Poor Idle Quality, Misfire, MIL Lamp on
hi posting for my brother in law been getting code po300 missfire so we relaced wires and plugs maf meter and air filter truck will still set code at times and idles at 550rpm graphed o2 sensor all ok preformed ckp varation,sprayed for intake leak did not show... Trouble codes: P0300
2004 GMC Envoy SLE 4.2L MIL Lamp on
Thank in advanced I have a 2004 envoy 4.2 lt, changed the evap vent solenoid was sticking. Still have large leak code. Tested wiring and have 12 volts on both wires key on and engine running .With the scanner I can control ground and shut the vent solenoid off... Trouble codes: P0455 (Large leak)
2001 Pontiac Grand Prix SE 3.1L No Start, Hesitation, Cuts out, Stall VIN: 1G2WK52J91
Guys I Replaced intake manifold gasket . The car ran Great for 15 miles now runns poorly no codes checked power and grounds at ECM all good Replaced ECM Same Thing Redid manifold gasket Same Thing The EGR Valve Stays open Being Grounded Through ECM Even At Idl...
2005 Pontiac Grand Prix GT 3.8L Cuts out, Stall VIN: 2G2WS52245
This engine cuts out, quits no warning while driving. We have clocked it at 13 to 16 min.s into a drive from a cold start. We did a "re-flash" the PCM as we thought it might have gotten "scrambled" somehow. ( we have seen other GM products in the past have som...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac DeVille 4.6L Brake Fluid Level VIN: 1G6KD54Y63
Thanks to all that replayed. It was the master cylinder reservoir.
2010 Chevrolet Equinox LS 2.4L Poor Idle Quality VIN: 2CNALBEW8A
Thank you for all your suggestions. As pointed out it is not possible to check fuel pressure from high presure pump. The injection cleaning/intake cleaning did not help. Customer scheduled to take it back to dealer in hopes the high pressure pump was at fault ...
1995 GMC K1500 Sierra SL 5.7L Speedometer VIN: 1GTEK19KXS
It was the Ignition Switch. Thanks for all the help.
2006 Pontiac GTO 6.0L Key-less fobs VIN: 6G2VX12U46
seems as if onlt three remotes can be programed and Now I have to do some digging to learn what to do. All I need is to erase the original two remotes
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