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Prev Professional Automotive Repair Technical Discussions for September 22, 2014
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Open Help Requests for GM
Help Request Answers
2000 Cadillac DeVille 4.6L no start VIN: 1G6KD54Y0Y
Due to the fact of cost on all these parts, need to know for sure pinvpoint tests, and whats common. Reading alot of ignlock cyliners with ign switches. A few pass key decoder modules
1991 Chevrolet S10 Blazer Tahoe LT 4.3L Poor Idle Quality, Stall VIN: 1GNCT18Z5M
Here's another one for the books. This blazer was towed in. The engine only runs at 1200rpm and above and no codes were set. Inspection showed the TBI was a mess and the IAC valve was worn and old. I rebuilt the throttle body and replaced the IAC valve. Instal...
1993 Chevrolet P30 7.4L Poor Idle Quality, Cuts out, Stall VIN: 1GBJP37N0P
this rv dies if you are n gear and are moving you hit the brakes. I checked it out and it seemed to b loosing pulse to the injectors. problem seem to b coming from the pcm. so I replaced it with a remaned pcm. but no change. tested the module n the dist couse ...
1998 Chevrolet K2500 Cheyenne 5.7L passlock VIN: 1GCGK29R8W
Customer came in with occasional no start. Retrieved codes P1626 and U1192 from Passlock module using Maxidas DS708. Verified no start condition after clearing codes and P1626 reset in the passlock module. Attempted to bypass key cylinder using the common "res...
2006 Chevrolet Express 3500 4.8L Misfire VIN: 1GBHG31V56
miss fire all times, mostly on cylinders 1,6,7 some times 8... on idle or accel all times, checked compression, leak down, back pressure, spark, injecters pulse, noid lights test, all normal or good, smoked intake for leaks none found, fuel trim...LT #1 25% LT... Trouble codes: P0171, P0300, P0420
2008 Chevrolet Suburban 1500 LTZ 5.3L Misfire VIN: 1GNFK16398
Thank you guys in advance for your help. Truck came in with a misfire and check engine light. Found a P0300 and a dead miss on #1 cyl. Found NO compression on #1 cyl. Pulled rocker cover and found intake Pushrod not moving. So, we sold R&R heads and found l... Trouble codes: P0304
2006 GMC Yukon XL 1500 Denali 6.0L Poor Idle Quality, Misfire VIN: 1GKFK66U36
2006 gmc yukon with a 6.0, came in with check engine light on, only stored code was for cylinder 5 misfire, noticeable at idle only. verified with scan tool that misfire goes away completely above 1000 rpms. checked for compression 155lbs. replaced plug and wi... Trouble codes: P0305

Fixes & Summaries for GM
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