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Professional Automotive Repair Technical Discussions for August 19, 2015 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1993 Chevrolet S10 Blazer Tahoe 4.3L Poor Idle Quality VIN: 1GNDT13W4P truck came in for a no start. replaced spider assembly inside intake manifold (was badly fuel soaked). runs rough when cold but after short warm up idles much better but running rich. also burns black until warmed up. fuel trim 128 LT trim 118 MAP 1.08 - 1.28 ... |
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| 2000 Chevrolet Silverado 2500 6.0L MIL Lamp on VIN: 1GCFC29UXY Mayday! Mayday!! Thanks for your help on this headache!! Customer has been dealing with this problem for 3 years now. At approx. 60k miles, it started setting P0157 codes Bank 2 Sensor 2 low voltage. NO other codes or symptoms. Dealer replaced that O2 SEVEN ti... Trouble codes: P0157 (Bank 2 Sensor 2 low voltage) |
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| 2003 Chevrolet Express 1500 5.3L rear folding bed VIN: 1GBFG15T83 vechile came in power seat not working check for power at seat motor ok also check and added extra ground to circuit .replace switchs and bench test motor ok no forward or rearward movement up or down thanks in advance |
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| 2008 Chevrolet Uplander 3.9L a/c VIN: 1GBDV13W48 well I have this 2008 uplander and it does weird stuff for my customer the a/c will work great for 3 1/2 hrs then shut off and wont work just blows hot , the other thing is sometimes the doors will unlock and lock while driving I have looked at this van many t... |
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| 2008 Chevrolet Impala LT 3.5L a/c VIN: 2G1WT55K98 customer con. a/c go off loss ground from pcm we replaced the pcm and reflashed the a/c works untill battery saver light comes on i checked the battery and alternator they bouth check out good and no codes stored |
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| 2008 GMC Sierra 1500 WT 4.8L MIL Lamp on, Engine power reducti VIN: 1GTEC14C08 Working on p2138 code. At an idle recieve voltage readings of app-1 .85v and on app-2 .44v. As the accerelator pedal is swept readings fall off on app-1 from a 50% corelation. I back probed circut 1161 at pin #29 pcm and recieved the same reading as backprobin... Trouble codes: P1238 (Accelerator pedal sensor 1-2 correlation) |
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| 2004 Hummer H2 6.0L cruise control VIN: 5GRGN23U24 The problem is the cruise control intermittently shuts off, like the cruise switch is turned off..no codes recorded. I have verified this on my Verus scanner, and the PID for the cruise switch says "off" when the cruise just shuts off intermittently. The brake... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1998 Cadillac DeVille d'Elegance 4.6L Interior Lights VIN: 1G6KE54Y3W I appreciate all the input. Just about everyone said it was a PZM/BCM and that the IPC won't cause this problem. Well, I guess we all learned something from this one. The problem turned out to be a bad photo cell (twilight sensor), which is an input to the I... |
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