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Prev Professional Automotive Repair Technical Discussions for February 8, 2013
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Help Request Answers
1997 Cadillac Eldorado ETC 4.6L brakes VIN: 1G6ET1291V
Hello everyone, We have a 1997 Caddy Eldorado in for abs problems again. We are getting false ABS application between 20 mph and 10 mph almost every time the brakes are applied. Our shop has replaced the ABS module two times before to correct this problem and ...
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1994 Chevrolet G20 Chevy Van 5.7L engine
engine has vibration most noticed at 1100-2300 rpm in park or in gear,driving or not. removed drive belt,still there,unbolted torque converter,still there,repl all eng mts,plugs,egr valve,still there. most noticed in steering wheel but side mirrors vibrate as ...
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2001 Chevrolet Tracker LT 2.5L Flexplate VIN: 2CNBJ63491
Veh. has had engine change at other shop, cust. say's engine is same year. Had noise in engine flexplate cracked, not around bolts but in slots below start ring. Could not find new one with dealer or parts store. Cust. found two at salvage yard, were same. Rep...
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2002 Chevrolet Avalanche 1500 5.3L Rev?low VIN: 3GNEK13T22
Had this truck come in with no rev. It would move forward while it was in rev. Pulled it and found forward clutchs was fused. Rebuilt the trans and reinstald into the truck. Now we have rev but it grinds in low/ rev. What did I miss on the overhaul
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2005 Chevrolet Malibu Maxx LT 3.5L Sterring VIN: 1G12S52FX5
The car came in for the power sterring issues that these had. Replaced tourqe sensor. Calibrated aligned. The problem is when you take off it has pretty bad tourqe steer. At first we thought the sensor. Started digging deeper and after ALOT of time and headach...
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2007 Chevrolet Suburban 2500 LT 6.0L Cuts out VIN: 3GNGK26KX7
Thanks in advance to anyone who may have some help. This truck has an intermittent problem. It runs fine and then all of a sudden, without warning, it will start to cut out and lose power. The tach will read 0. It has never stalled. Any time we have it here in... Trouble codes: P0335
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2007 Chevrolet Avalanche LTZ 5.3L #4 valve burnt VIN: 3GNFK12347
we have a 2007 avalanche with a #4 exhaust valve burnt with no compression in the cylinder at all valve is stuck we cant see any problem with piston or rings other than pulling the piston out found no damage to cylinder wall either we did find a bulliten on gm...
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2008 Chevrolet Express 1500 4.3L No Start VIN: 1GCFG15X18
This van is a delivery van , but is fairly well maintained. About a week ago customer phoned,saidvan started ok cold but as the driver was driving he noticed the temp gauge was right on the bottom. When he shut the van off it would not restart, would crank o/k... Trouble codes: P0116, P0300 (Multiple misfire)
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1996 GMC K1500 Sierra SL 5.7L No spark VIN: 1GTEK14R3T
Ok we have this truck in here with no spark out of the distubutor... Has had the distubutor,coil,plugs and wires all replaced. It has spark out of the coil its self but once you plug the coil wire into the distubutor i get nothing out of it on any cylinders......
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2001 Pontiac Aztek 3.4L starting VIN: 3G7DA03E81
Vehicle ran fine until parked, and after setting for several days, developed a no crank/no start symptom. Owner replaced the listed items. We looked at it, and saw the PK3 on the ignition key. Looking at the MOD schematics, the PK3 (pass key three) kills the s...
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2004 Saturn Ion-2 2.2L Stall, Misfire, MIL Lamp on VIN: 1G8AJ52F44
Car was towed in customer couldnt keep running. Has obvious misfire, installed know good coils and icm no change. Data shows no pulse signal on injectors 3 and 4. wiring shows good to ecm. Any ideas would be great. Trouble codes: P1599 (Engine stall), P0341 (Cmp signal), P0300 (Random misfire)
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Fixes & Summaries for GM
Fix/Summary Answers
2004 Chevrolet Tracker 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2CNBJ13494
Thanks for all the help! In the end it was the timing on right exhaust cam that was the culprit. We ended up aligning it to the silver links on the chain, instead of the marks through all data. Thanks again everyone. Trouble codes: P0171 (Lean bank 1).
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2008 Pontiac Montana SV6 3.9L Input Speed Sensor VIN: 1GMDV03108
DETERMINED THE SIGNAL WAS TOO WEAK. SENT BACK TO TRANNY SHOP. INSTALLED ANOTHER SENSOR AND WIRING HARNESS. SIGNAL GOES UP TO 4V AC NOW. HAD ONLY 1.7V AC BEFORE. ALL IS WELL NOW.
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