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Prev Professional Automotive Repair Technical Discussions for March 2, 2015
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Open Help Requests for GM
Help Request Answers
2005 Buick LeSabre Limited 3.8L No Start, Stall VIN: 1G4HR54K65
I'm trying to diag this one for another shop. The original issue was a severe misfire caused by a failed Ignition module. The vehicle now runs very well but has a hard/no start, stalling problem. This problem began 5 weeks after the replacement of the above ig... Trouble codes: P0300 (Random Misfire)
2007 Cadillac Escalade 6.2L Transmission VIN: 1GYFK63837
Vehicle came in with complaint of erratic reverse operation scanned transmission for codes had internal switch mode code replaced switch still have no reverse but drive works fluid was very dark what else can cause this my scanner shows transmission drops out ...
1971 Chevrolet C20 Pickup 5.7L Drive
What i have is a turbo 350 transmission.What is going on is if drove or running to working temp.More times then not you shift to drive and no drive,If you shift to reverse or to 1 or 2 drive then back to drive. drive is back and works fine.Put truck into park ...
2004 Chevrolet Trailblazer LS 4.2L Fuel Pressure
Thanks for looking at my request. This vehicle came in with the custome saying it will surge and - or stall when slowing or at stops. I have not been able to duplicate the symptoms. It has a code P0128 Coolant thermostat and U1041 Loss of EBCM / CBTCM communic...
2007 Chevrolet Suburban 1500 LTZ 5.3L Trac. light flashes VIN: 1GNFK16397
Hi guys, got a good one here. This customer says that ever since our shop replaced the rack & pinion and outer tie rod ends, he's had an interesting problem. On turns (mostly left turns) occasionally the traction light will start flashing and the brake pedal w...
2008 GMC Acadia SLT 3.6L Poor Idle Quality VIN: 1GKEV23718
Vehicle came into shop, customer assumed transmission problem. Upon road test we had no power almost like a bad fuel pump or clogged Cat. Multiple timing codes that I have listed were found. Also had a P0741. Found leak at transmission cooling line and transmi... Trouble codes: P0741, P0011 (Intake Camshaft Position Sensor Sys Performance Bank 1), P0016, P0017 (Crankshaft Position Exhaust Correlation Bank1 Test Failed), P0018 (CKP Intake Camshaft Position Correlation Bank 2 Test Failed), P0019 (CKP Intake Camshaft Position Correlation Bank 2 Test Failed)
2007 Saturn Outlook XE 3.6L Timing Chain VIN: 5GZER13757
Please help is gm's 3.6(vin 7) an interference engine. The timing chain is broken or slipped, the engine crank pulley turns but front three cylinders have only about 2 psi for compression and the engine seems to free wheel when cranked. The procedure for timin...

Fixes & Summaries for GM
Fix/Summary Answers
2005 Chevrolet Silverado 1500 5.3L MIL Lamp on, reduced power VIN: 1GCEK19B95
customer brought vehicle back we checked all grounds and cleaned throttle body customer has not returned Trouble codes: P1516, U0107.
2007 Chevrolet Aveo LS 1.6L Misfire, MIL Lamp on VIN: KL1TD66627
Well technically I didn't fix it. I advised the customer it was in his best interest to let the other shop make good on their offer. Head came off and valves were replaced. My real query was why i couldn't see the misfire via intake pulls, but as I stated abov...
2012 Chevrolet Express 3500 6.6L Regeneration VIN: 1GBZGUCL9C
Thanks to all who replied, this one appears to be fixed. After returning vehicle to service with estimate to r&r hc injector, vehicle has come back with check engine light on P24A0. I removed nozzle end of injector, unable to blow through it. Installed new ...
2005 Hummer H2 6.0L driver mirror VIN: 5GRGN23U05
2006 Pontiac G6 3.5L . VIN: 1G2ZG55846
this one is fixed. it end up setting a code for transmission solenoid. it had a transmission problem,cust declined the repair.
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